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Carlo Jr. 09-15-2003 12:53 AM

Re: Aluminum Radiator
 
well - I have been trying to find out the coolant temp required for closed
loop mode. I looked in the FSM & it only says "operating temperature" I
tried Google.......& I found that the O2 sensor has to be 600F on a Toyota,
but I do not see a specific coolant temp anywhere.
If you run a cooler T-Stat, it may cause the JTEC to switch, back & forth,
between open & closed loop.

--
Carlo F. Serusa, Jr. RPh
carlo.jr@comcast.net
'98 Sahara TJ - '89 YJ - '79 Scout II
O|||||||O
'92 Explorer '65 Mustang


"Rich Pierson" <fist@ptd.net> wrote in message
news:Xns93F619989635fistptdnet@204.186.201.17...
> I have a stock thermostat for my 98XJ that I just picked up
> yesterday.Chrysler Part Number 52028186-AB, its marked 195 to the side of
> the 'up' arrows :-)
>
> Mike Romain <romainm@sympatico.ca> wrote in
> news:3F60D040.67874FD7@sympatico.ca:
>
> > I 'think' it is a 195 in most places, Bill commented something about
> > 210's needed in CA for the smog police...
> >
> > Just figure the hotter the t-stat, the more heat inside in the winter.
> >:-)
> >
> > 5 or 10 deg make a 'big' difference at -30 or -40.... Even -
> > anything.
> >
> > Up in the Great White North.
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > TJim wrote:
> >>
> >> OK, I seem to be confused between 190 and 195... use whatever the
> >> owners manual says you should. You can't go wrong following the
> >> owners manual (I hope).
> >>
> >> "TJim" <jim@ranlet.nospam.com> wrote in message
> >> news:1h2dnauT4MTGV_2iU-KYvA@comcast.com...
> >> > 210 is what most TJs will run with the stock 190* thermostat. You
> >> > don't want to put in a cooler t-stat or take the t-stat out because
> >> > the computer will never see operating temperature. If you never
> >> > get to op temp, the computer runs in open loop (warm up) all the
> >> > time. This is not good. I know of some people who have gotten away
> >> > with a 180* t-stat, but that would be the absolute minimum. I
> >> > recommend staying with the stock 195*. As long as you have a good
> >> > cap and a 50/50 mix, you will run fine at 210.
> >> >
> >> > "Red Racer" <rcanden@msn.com> wrote in message
> >> > news:1063229976.623950@sj-nntpcache-3...
> >> > > Carlo,
> >> > >
> >> > > 210 just plain makes me nervous, but unless you have a Chevy 355,
> >> > > or a siamesed bore 400 with 11:1 comp, it is probably normal.
> >> > >
> >> > > RR
> >> > >
> >> > >
> >> > > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> >> > > news:sUw7b.404737$YN5.270253@sccrnsc01...
> >> > > > You were there to comfort me in a time of stress.......
> >> > > > BTW - what do you think about 210F. It was there when it was
> >> > > > new, &
> >> the
> >> > > > local dealer thought it was normal, so I accepted that - but,
> >> > > > lately,
> >> so
> >> > > > many other people freak out when they hear 210F??
> >> > > >
> >> > > > --
> >> > > > Carlo F. Serusa, Jr. RPh
> >> > > > carlo.jr@comcast.net
> >> > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> >> > > > O|||||||O
> >> > > > '92 Explorer '65 Mustang
> >> > > >
> >> > > >
> >> > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message
> >> > > > news:3F5E2EC6.607A43D0@cox.net...
> >> > > > > Hi Carlo,
> >> > > > > I didn't do anything.
> >> > > > > I'm glad to hear it doesn't ever run hotter than the
> >> thermostat.
> >> > > > > God Bless America, ßill O|||||||O
> >> > > > > mailto:-------------------- http://www.----------.com/
> >> > > > >
> >> > > > > "Carlo Jr." wrote:
> >> > > > > >
> >> > > > > > Also.........wanted to say "thanks" to Bill.......
> >> > > > > >
> >> > > > > > --
> >> > > > > > Carlo F. Serusa, Jr. RPh
> >> > > > > > carlo.jr@comcast.net
> >> > > > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> >> > > > > > O|||||||O
> >> > > > > > '92 Explorer '65 Mustang
> >> > > >
> >> > > >
> >> > >
> >> > >
> >> >
> >> >

> >

>




Jerry Bransford 09-15-2003 01:00 AM

Re: Aluminum Radiator
 
A 195 degree thermostat is what's required for that year and model XJ, if
that's the information you're after.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"Carlo Jr." <carlo.jr@comcast.net> wrote in message
news:MAb9b.449196$Ho3.74121@sccrnsc03...
> well - I have been trying to find out the coolant temp required for closed
> loop mode. I looked in the FSM & it only says "operating temperature" I
> tried Google.......& I found that the O2 sensor has to be 600F on a

Toyota,
> but I do not see a specific coolant temp anywhere.
> If you run a cooler T-Stat, it may cause the JTEC to switch, back & forth,
> between open & closed loop.
>
> --
> Carlo F. Serusa, Jr. RPh
> carlo.jr@comcast.net
> '98 Sahara TJ - '89 YJ - '79 Scout II
> O|||||||O
> '92 Explorer '65 Mustang
>
>
> "Rich Pierson" <fist@ptd.net> wrote in message
> news:Xns93F619989635fistptdnet@204.186.201.17...
> > I have a stock thermostat for my 98XJ that I just picked up
> > yesterday.Chrysler Part Number 52028186-AB, its marked 195 to the side

of
> > the 'up' arrows :-)
> >
> > Mike Romain <romainm@sympatico.ca> wrote in
> > news:3F60D040.67874FD7@sympatico.ca:
> >
> > > I 'think' it is a 195 in most places, Bill commented something about
> > > 210's needed in CA for the smog police...
> > >
> > > Just figure the hotter the t-stat, the more heat inside in the winter.
> > >:-)
> > >
> > > 5 or 10 deg make a 'big' difference at -30 or -40.... Even -
> > > anything.
> > >
> > > Up in the Great White North.
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > TJim wrote:
> > >>
> > >> OK, I seem to be confused between 190 and 195... use whatever the
> > >> owners manual says you should. You can't go wrong following the
> > >> owners manual (I hope).
> > >>
> > >> "TJim" <jim@ranlet.nospam.com> wrote in message
> > >> news:1h2dnauT4MTGV_2iU-KYvA@comcast.com...
> > >> > 210 is what most TJs will run with the stock 190* thermostat. You
> > >> > don't want to put in a cooler t-stat or take the t-stat out because
> > >> > the computer will never see operating temperature. If you never
> > >> > get to op temp, the computer runs in open loop (warm up) all the
> > >> > time. This is not good. I know of some people who have gotten away
> > >> > with a 180* t-stat, but that would be the absolute minimum. I
> > >> > recommend staying with the stock 195*. As long as you have a good
> > >> > cap and a 50/50 mix, you will run fine at 210.
> > >> >
> > >> > "Red Racer" <rcanden@msn.com> wrote in message
> > >> > news:1063229976.623950@sj-nntpcache-3...
> > >> > > Carlo,
> > >> > >
> > >> > > 210 just plain makes me nervous, but unless you have a Chevy 355,
> > >> > > or a siamesed bore 400 with 11:1 comp, it is probably normal.
> > >> > >
> > >> > > RR
> > >> > >
> > >> > >
> > >> > > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > >> > > news:sUw7b.404737$YN5.270253@sccrnsc01...
> > >> > > > You were there to comfort me in a time of stress.......
> > >> > > > BTW - what do you think about 210F. It was there when it was
> > >> > > > new, &
> > >> the
> > >> > > > local dealer thought it was normal, so I accepted that - but,
> > >> > > > lately,
> > >> so
> > >> > > > many other people freak out when they hear 210F??
> > >> > > >
> > >> > > > --
> > >> > > > Carlo F. Serusa, Jr. RPh
> > >> > > > carlo.jr@comcast.net
> > >> > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > >> > > > O|||||||O
> > >> > > > '92 Explorer '65 Mustang
> > >> > > >
> > >> > > >
> > >> > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message
> > >> > > > news:3F5E2EC6.607A43D0@cox.net...
> > >> > > > > Hi Carlo,
> > >> > > > > I didn't do anything.
> > >> > > > > I'm glad to hear it doesn't ever run hotter than the
> > >> thermostat.
> > >> > > > > God Bless America, ßill O|||||||O
> > >> > > > > mailto:-------------------- http://www.----------.com/
> > >> > > > >
> > >> > > > > "Carlo Jr." wrote:
> > >> > > > > >
> > >> > > > > > Also.........wanted to say "thanks" to Bill.......
> > >> > > > > >
> > >> > > > > > --
> > >> > > > > > Carlo F. Serusa, Jr. RPh
> > >> > > > > > carlo.jr@comcast.net
> > >> > > > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > >> > > > > > O|||||||O
> > >> > > > > > '92 Explorer '65 Mustang
> > >> > > >
> > >> > > >
> > >> > >
> > >> > >
> > >> >
> > >> >
> > >

> >

>
>




Jerry Bransford 09-15-2003 01:00 AM

Re: Aluminum Radiator
 
A 195 degree thermostat is what's required for that year and model XJ, if
that's the information you're after.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"Carlo Jr." <carlo.jr@comcast.net> wrote in message
news:MAb9b.449196$Ho3.74121@sccrnsc03...
> well - I have been trying to find out the coolant temp required for closed
> loop mode. I looked in the FSM & it only says "operating temperature" I
> tried Google.......& I found that the O2 sensor has to be 600F on a

Toyota,
> but I do not see a specific coolant temp anywhere.
> If you run a cooler T-Stat, it may cause the JTEC to switch, back & forth,
> between open & closed loop.
>
> --
> Carlo F. Serusa, Jr. RPh
> carlo.jr@comcast.net
> '98 Sahara TJ - '89 YJ - '79 Scout II
> O|||||||O
> '92 Explorer '65 Mustang
>
>
> "Rich Pierson" <fist@ptd.net> wrote in message
> news:Xns93F619989635fistptdnet@204.186.201.17...
> > I have a stock thermostat for my 98XJ that I just picked up
> > yesterday.Chrysler Part Number 52028186-AB, its marked 195 to the side

of
> > the 'up' arrows :-)
> >
> > Mike Romain <romainm@sympatico.ca> wrote in
> > news:3F60D040.67874FD7@sympatico.ca:
> >
> > > I 'think' it is a 195 in most places, Bill commented something about
> > > 210's needed in CA for the smog police...
> > >
> > > Just figure the hotter the t-stat, the more heat inside in the winter.
> > >:-)
> > >
> > > 5 or 10 deg make a 'big' difference at -30 or -40.... Even -
> > > anything.
> > >
> > > Up in the Great White North.
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > TJim wrote:
> > >>
> > >> OK, I seem to be confused between 190 and 195... use whatever the
> > >> owners manual says you should. You can't go wrong following the
> > >> owners manual (I hope).
> > >>
> > >> "TJim" <jim@ranlet.nospam.com> wrote in message
> > >> news:1h2dnauT4MTGV_2iU-KYvA@comcast.com...
> > >> > 210 is what most TJs will run with the stock 190* thermostat. You
> > >> > don't want to put in a cooler t-stat or take the t-stat out because
> > >> > the computer will never see operating temperature. If you never
> > >> > get to op temp, the computer runs in open loop (warm up) all the
> > >> > time. This is not good. I know of some people who have gotten away
> > >> > with a 180* t-stat, but that would be the absolute minimum. I
> > >> > recommend staying with the stock 195*. As long as you have a good
> > >> > cap and a 50/50 mix, you will run fine at 210.
> > >> >
> > >> > "Red Racer" <rcanden@msn.com> wrote in message
> > >> > news:1063229976.623950@sj-nntpcache-3...
> > >> > > Carlo,
> > >> > >
> > >> > > 210 just plain makes me nervous, but unless you have a Chevy 355,
> > >> > > or a siamesed bore 400 with 11:1 comp, it is probably normal.
> > >> > >
> > >> > > RR
> > >> > >
> > >> > >
> > >> > > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > >> > > news:sUw7b.404737$YN5.270253@sccrnsc01...
> > >> > > > You were there to comfort me in a time of stress.......
> > >> > > > BTW - what do you think about 210F. It was there when it was
> > >> > > > new, &
> > >> the
> > >> > > > local dealer thought it was normal, so I accepted that - but,
> > >> > > > lately,
> > >> so
> > >> > > > many other people freak out when they hear 210F??
> > >> > > >
> > >> > > > --
> > >> > > > Carlo F. Serusa, Jr. RPh
> > >> > > > carlo.jr@comcast.net
> > >> > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > >> > > > O|||||||O
> > >> > > > '92 Explorer '65 Mustang
> > >> > > >
> > >> > > >
> > >> > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message
> > >> > > > news:3F5E2EC6.607A43D0@cox.net...
> > >> > > > > Hi Carlo,
> > >> > > > > I didn't do anything.
> > >> > > > > I'm glad to hear it doesn't ever run hotter than the
> > >> thermostat.
> > >> > > > > God Bless America, ßill O|||||||O
> > >> > > > > mailto:-------------------- http://www.----------.com/
> > >> > > > >
> > >> > > > > "Carlo Jr." wrote:
> > >> > > > > >
> > >> > > > > > Also.........wanted to say "thanks" to Bill.......
> > >> > > > > >
> > >> > > > > > --
> > >> > > > > > Carlo F. Serusa, Jr. RPh
> > >> > > > > > carlo.jr@comcast.net
> > >> > > > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > >> > > > > > O|||||||O
> > >> > > > > > '92 Explorer '65 Mustang
> > >> > > >
> > >> > > >
> > >> > >
> > >> > >
> > >> >
> > >> >
> > >

> >

>
>




Jerry Bransford 09-16-2003 12:39 AM

Re: Aluminum Radiator
 
Carlo, I'm not sure if I'm following who you're responding to but trust me,
the factory specified temperature rating of the thermostat is 195 degrees,
at least in all TJs. Absolutely. In fact, installing a 180 degree
thermostat where a 195 degree thermostat is specified by the factory is a
common cause of smog test failures. Absolutely. This is an area I'm well
versed, this is no rumor.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"Carlo Jr." <carlo.jr@comcast.net> wrote in message
news:Hhw9b.363061$Oz4.140383@rwcrnsc54...
> No...........
> everything else as it is supposed to be - If the computer goes into closed
> loop @ 200F & a cooler T-stat is installed such that the engine runs @

200F,
> then the computer would be constantly switching between closed loop & open
> loop as the engine goes a little above & a little below the threshold. If
> the threshold is @ 180F, there would be enough of a difference to run @

200F
> instead of 210F. I see a lot of adds for cooler, higher flow T-Stats, but
> wonder if they cause more problems than they solve.....
>
> --
> Carlo F. Serusa, Jr. RPh
> carlo.jr@comcast.net
> '98 Sahara TJ - '89 YJ - '79 Scout II
> O|||||||O
> '92 Explorer '65 Mustang
>
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:HHb9b.56247$Qy4.5251@fed1read05...
> > A 195 degree thermostat is what's required for that year and model XJ,

if
> > that's the information you're after.
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/
> >
> > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > news:MAb9b.449196$Ho3.74121@sccrnsc03...
> > > well - I have been trying to find out the coolant temp required for

> closed
> > > loop mode. I looked in the FSM & it only says "operating temperature"

I
> > > tried Google.......& I found that the O2 sensor has to be 600F on a

> > Toyota,
> > > but I do not see a specific coolant temp anywhere.
> > > If you run a cooler T-Stat, it may cause the JTEC to switch, back &

> forth,
> > > between open & closed loop.
> > >
> > > --
> > > Carlo F. Serusa, Jr. RPh
> > > carlo.jr@comcast.net
> > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > O|||||||O
> > > '92 Explorer '65 Mustang
> > >
> > >
> > > "Rich Pierson" <fist@ptd.net> wrote in message
> > > news:Xns93F619989635fistptdnet@204.186.201.17...
> > > > I have a stock thermostat for my 98XJ that I just picked up
> > > > yesterday.Chrysler Part Number 52028186-AB, its marked 195 to the

side
> > of
> > > > the 'up' arrows :-)
> > > >
> > > > Mike Romain <romainm@sympatico.ca> wrote in
> > > > news:3F60D040.67874FD7@sympatico.ca:
> > > >
> > > > > I 'think' it is a 195 in most places, Bill commented something

about
> > > > > 210's needed in CA for the smog police...
> > > > >
> > > > > Just figure the hotter the t-stat, the more heat inside in the

> winter.
> > > > >:-)
> > > > >
> > > > > 5 or 10 deg make a 'big' difference at -30 or -40.... Even -
> > > > > anything.
> > > > >
> > > > > Up in the Great White North.
> > > > > Mike
> > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > 88 Cherokee 235 BFG AT's
> > > > >
> > > > > TJim wrote:
> > > > >>
> > > > >> OK, I seem to be confused between 190 and 195... use whatever the
> > > > >> owners manual says you should. You can't go wrong following the
> > > > >> owners manual (I hope).
> > > > >>
> > > > >> "TJim" <jim@ranlet.nospam.com> wrote in message
> > > > >> news:1h2dnauT4MTGV_2iU-KYvA@comcast.com...
> > > > >> > 210 is what most TJs will run with the stock 190* thermostat.

> You
> > > > >> > don't want to put in a cooler t-stat or take the t-stat out

> because
> > > > >> > the computer will never see operating temperature. If you

never
> > > > >> > get to op temp, the computer runs in open loop (warm up) all

the
> > > > >> > time. This is not good. I know of some people who have gotten

> away
> > > > >> > with a 180* t-stat, but that would be the absolute minimum. I
> > > > >> > recommend staying with the stock 195*. As long as you have a

good
> > > > >> > cap and a 50/50 mix, you will run fine at 210.
> > > > >> >
> > > > >> > "Red Racer" <rcanden@msn.com> wrote in message
> > > > >> > news:1063229976.623950@sj-nntpcache-3...
> > > > >> > > Carlo,
> > > > >> > >
> > > > >> > > 210 just plain makes me nervous, but unless you have a Chevy

> 355,
> > > > >> > > or a siamesed bore 400 with 11:1 comp, it is probably normal.
> > > > >> > >
> > > > >> > > RR
> > > > >> > >
> > > > >> > >
> > > > >> > > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > > > >> > > news:sUw7b.404737$YN5.270253@sccrnsc01...
> > > > >> > > > You were there to comfort me in a time of stress.......
> > > > >> > > > BTW - what do you think about 210F. It was there when it

was
> > > > >> > > > new, &
> > > > >> the
> > > > >> > > > local dealer thought it was normal, so I accepted that -

but,
> > > > >> > > > lately,
> > > > >> so
> > > > >> > > > many other people freak out when they hear 210F??
> > > > >> > > >
> > > > >> > > > --
> > > > >> > > > Carlo F. Serusa, Jr. RPh
> > > > >> > > > carlo.jr@comcast.net
> > > > >> > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > >> > > > O|||||||O
> > > > >> > > > '92 Explorer '65 Mustang
> > > > >> > > >
> > > > >> > > >
> > > > >> > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in

> message
> > > > >> > > > news:3F5E2EC6.607A43D0@cox.net...
> > > > >> > > > > Hi Carlo,
> > > > >> > > > > I didn't do anything.
> > > > >> > > > > I'm glad to hear it doesn't ever run hotter than the
> > > > >> thermostat.
> > > > >> > > > > God Bless America, ßill O|||||||O
> > > > >> > > > > mailto:-------------------- http://www.----------.com/
> > > > >> > > > >
> > > > >> > > > > "Carlo Jr." wrote:
> > > > >> > > > > >
> > > > >> > > > > > Also.........wanted to say "thanks" to Bill.......
> > > > >> > > > > >
> > > > >> > > > > > --
> > > > >> > > > > > Carlo F. Serusa, Jr. RPh
> > > > >> > > > > > carlo.jr@comcast.net
> > > > >> > > > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > >> > > > > > O|||||||O
> > > > >> > > > > > '92 Explorer '65 Mustang
> > > > >> > > >
> > > > >> > > >
> > > > >> > >
> > > > >> > >
> > > > >> >
> > > > >> >
> > > > >
> > > >
> > >
> > >

> >
> >

>
>




Jerry Bransford 09-16-2003 12:39 AM

Re: Aluminum Radiator
 
Carlo, I'm not sure if I'm following who you're responding to but trust me,
the factory specified temperature rating of the thermostat is 195 degrees,
at least in all TJs. Absolutely. In fact, installing a 180 degree
thermostat where a 195 degree thermostat is specified by the factory is a
common cause of smog test failures. Absolutely. This is an area I'm well
versed, this is no rumor.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"Carlo Jr." <carlo.jr@comcast.net> wrote in message
news:Hhw9b.363061$Oz4.140383@rwcrnsc54...
> No...........
> everything else as it is supposed to be - If the computer goes into closed
> loop @ 200F & a cooler T-stat is installed such that the engine runs @

200F,
> then the computer would be constantly switching between closed loop & open
> loop as the engine goes a little above & a little below the threshold. If
> the threshold is @ 180F, there would be enough of a difference to run @

200F
> instead of 210F. I see a lot of adds for cooler, higher flow T-Stats, but
> wonder if they cause more problems than they solve.....
>
> --
> Carlo F. Serusa, Jr. RPh
> carlo.jr@comcast.net
> '98 Sahara TJ - '89 YJ - '79 Scout II
> O|||||||O
> '92 Explorer '65 Mustang
>
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:HHb9b.56247$Qy4.5251@fed1read05...
> > A 195 degree thermostat is what's required for that year and model XJ,

if
> > that's the information you're after.
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/
> >
> > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > news:MAb9b.449196$Ho3.74121@sccrnsc03...
> > > well - I have been trying to find out the coolant temp required for

> closed
> > > loop mode. I looked in the FSM & it only says "operating temperature"

I
> > > tried Google.......& I found that the O2 sensor has to be 600F on a

> > Toyota,
> > > but I do not see a specific coolant temp anywhere.
> > > If you run a cooler T-Stat, it may cause the JTEC to switch, back &

> forth,
> > > between open & closed loop.
> > >
> > > --
> > > Carlo F. Serusa, Jr. RPh
> > > carlo.jr@comcast.net
> > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > O|||||||O
> > > '92 Explorer '65 Mustang
> > >
> > >
> > > "Rich Pierson" <fist@ptd.net> wrote in message
> > > news:Xns93F619989635fistptdnet@204.186.201.17...
> > > > I have a stock thermostat for my 98XJ that I just picked up
> > > > yesterday.Chrysler Part Number 52028186-AB, its marked 195 to the

side
> > of
> > > > the 'up' arrows :-)
> > > >
> > > > Mike Romain <romainm@sympatico.ca> wrote in
> > > > news:3F60D040.67874FD7@sympatico.ca:
> > > >
> > > > > I 'think' it is a 195 in most places, Bill commented something

about
> > > > > 210's needed in CA for the smog police...
> > > > >
> > > > > Just figure the hotter the t-stat, the more heat inside in the

> winter.
> > > > >:-)
> > > > >
> > > > > 5 or 10 deg make a 'big' difference at -30 or -40.... Even -
> > > > > anything.
> > > > >
> > > > > Up in the Great White North.
> > > > > Mike
> > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > 88 Cherokee 235 BFG AT's
> > > > >
> > > > > TJim wrote:
> > > > >>
> > > > >> OK, I seem to be confused between 190 and 195... use whatever the
> > > > >> owners manual says you should. You can't go wrong following the
> > > > >> owners manual (I hope).
> > > > >>
> > > > >> "TJim" <jim@ranlet.nospam.com> wrote in message
> > > > >> news:1h2dnauT4MTGV_2iU-KYvA@comcast.com...
> > > > >> > 210 is what most TJs will run with the stock 190* thermostat.

> You
> > > > >> > don't want to put in a cooler t-stat or take the t-stat out

> because
> > > > >> > the computer will never see operating temperature. If you

never
> > > > >> > get to op temp, the computer runs in open loop (warm up) all

the
> > > > >> > time. This is not good. I know of some people who have gotten

> away
> > > > >> > with a 180* t-stat, but that would be the absolute minimum. I
> > > > >> > recommend staying with the stock 195*. As long as you have a

good
> > > > >> > cap and a 50/50 mix, you will run fine at 210.
> > > > >> >
> > > > >> > "Red Racer" <rcanden@msn.com> wrote in message
> > > > >> > news:1063229976.623950@sj-nntpcache-3...
> > > > >> > > Carlo,
> > > > >> > >
> > > > >> > > 210 just plain makes me nervous, but unless you have a Chevy

> 355,
> > > > >> > > or a siamesed bore 400 with 11:1 comp, it is probably normal.
> > > > >> > >
> > > > >> > > RR
> > > > >> > >
> > > > >> > >
> > > > >> > > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > > > >> > > news:sUw7b.404737$YN5.270253@sccrnsc01...
> > > > >> > > > You were there to comfort me in a time of stress.......
> > > > >> > > > BTW - what do you think about 210F. It was there when it

was
> > > > >> > > > new, &
> > > > >> the
> > > > >> > > > local dealer thought it was normal, so I accepted that -

but,
> > > > >> > > > lately,
> > > > >> so
> > > > >> > > > many other people freak out when they hear 210F??
> > > > >> > > >
> > > > >> > > > --
> > > > >> > > > Carlo F. Serusa, Jr. RPh
> > > > >> > > > carlo.jr@comcast.net
> > > > >> > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > >> > > > O|||||||O
> > > > >> > > > '92 Explorer '65 Mustang
> > > > >> > > >
> > > > >> > > >
> > > > >> > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in

> message
> > > > >> > > > news:3F5E2EC6.607A43D0@cox.net...
> > > > >> > > > > Hi Carlo,
> > > > >> > > > > I didn't do anything.
> > > > >> > > > > I'm glad to hear it doesn't ever run hotter than the
> > > > >> thermostat.
> > > > >> > > > > God Bless America, ßill O|||||||O
> > > > >> > > > > mailto:-------------------- http://www.----------.com/
> > > > >> > > > >
> > > > >> > > > > "Carlo Jr." wrote:
> > > > >> > > > > >
> > > > >> > > > > > Also.........wanted to say "thanks" to Bill.......
> > > > >> > > > > >
> > > > >> > > > > > --
> > > > >> > > > > > Carlo F. Serusa, Jr. RPh
> > > > >> > > > > > carlo.jr@comcast.net
> > > > >> > > > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > >> > > > > > O|||||||O
> > > > >> > > > > > '92 Explorer '65 Mustang
> > > > >> > > >
> > > > >> > > >
> > > > >> > >
> > > > >> > >
> > > > >> >
> > > > >> >
> > > > >
> > > >
> > >
> > >

> >
> >

>
>




Carlo Jr. 09-17-2003 12:07 AM

Re: Aluminum Radiator
 
OK...........we agree. But does anybody know the actual temperature that the
coolant must be at for the computer to go into closed loop???


--
Carlo F. Serusa, Jr. RPh
carlo.jr@comcast.net
'98 Sahara TJ - '89 YJ - '79 Scout II
O|||||||O
'92 Explorer '65 Mustang


"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:7uw9b.56894$Qy4.25872@fed1read05...
> Carlo, I'm not sure if I'm following who you're responding to but trust

me,
> the factory specified temperature rating of the thermostat is 195 degrees,
> at least in all TJs. Absolutely. In fact, installing a 180 degree
> thermostat where a 195 degree thermostat is specified by the factory is a
> common cause of smog test failures. Absolutely. This is an area I'm well
> versed, this is no rumor.
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
>
> "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> news:Hhw9b.363061$Oz4.140383@rwcrnsc54...
> > No...........
> > everything else as it is supposed to be - If the computer goes into

closed
> > loop @ 200F & a cooler T-stat is installed such that the engine runs @

> 200F,
> > then the computer would be constantly switching between closed loop &

open
> > loop as the engine goes a little above & a little below the threshold.

If
> > the threshold is @ 180F, there would be enough of a difference to run @

> 200F
> > instead of 210F. I see a lot of adds for cooler, higher flow T-Stats,

but
> > wonder if they cause more problems than they solve.....
> >
> > --
> > Carlo F. Serusa, Jr. RPh
> > carlo.jr@comcast.net
> > '98 Sahara TJ - '89 YJ - '79 Scout II
> > O|||||||O
> > '92 Explorer '65 Mustang
> >
> >
> > "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> > news:HHb9b.56247$Qy4.5251@fed1read05...
> > > A 195 degree thermostat is what's required for that year and model XJ,

> if
> > > that's the information you're after.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > KC6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.cox.net/jerrypb/
> > >
> > > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > > news:MAb9b.449196$Ho3.74121@sccrnsc03...
> > > > well - I have been trying to find out the coolant temp required for

> > closed
> > > > loop mode. I looked in the FSM & it only says "operating

temperature"
> I
> > > > tried Google.......& I found that the O2 sensor has to be 600F on a
> > > Toyota,
> > > > but I do not see a specific coolant temp anywhere.
> > > > If you run a cooler T-Stat, it may cause the JTEC to switch, back &

> > forth,
> > > > between open & closed loop.
> > > >
> > > > --
> > > > Carlo F. Serusa, Jr. RPh
> > > > carlo.jr@comcast.net
> > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > O|||||||O
> > > > '92 Explorer '65 Mustang
> > > >
> > > >
> > > > "Rich Pierson" <fist@ptd.net> wrote in message
> > > > news:Xns93F619989635fistptdnet@204.186.201.17...
> > > > > I have a stock thermostat for my 98XJ that I just picked up
> > > > > yesterday.Chrysler Part Number 52028186-AB, its marked 195 to the

> side
> > > of
> > > > > the 'up' arrows :-)
> > > > >
> > > > > Mike Romain <romainm@sympatico.ca> wrote in
> > > > > news:3F60D040.67874FD7@sympatico.ca:
> > > > >
> > > > > > I 'think' it is a 195 in most places, Bill commented something

> about
> > > > > > 210's needed in CA for the smog police...
> > > > > >
> > > > > > Just figure the hotter the t-stat, the more heat inside in the

> > winter.
> > > > > >:-)
> > > > > >
> > > > > > 5 or 10 deg make a 'big' difference at -30 or -40.... Even -
> > > > > > anything.
> > > > > >
> > > > > > Up in the Great White North.
> > > > > > Mike
> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > 88 Cherokee 235 BFG AT's
> > > > > >
> > > > > > TJim wrote:
> > > > > >>
> > > > > >> OK, I seem to be confused between 190 and 195... use whatever

the
> > > > > >> owners manual says you should. You can't go wrong following

the
> > > > > >> owners manual (I hope).
> > > > > >>
> > > > > >> "TJim" <jim@ranlet.nospam.com> wrote in message
> > > > > >> news:1h2dnauT4MTGV_2iU-KYvA@comcast.com...
> > > > > >> > 210 is what most TJs will run with the stock 190* thermostat.

> > You
> > > > > >> > don't want to put in a cooler t-stat or take the t-stat out

> > because
> > > > > >> > the computer will never see operating temperature. If you

> never
> > > > > >> > get to op temp, the computer runs in open loop (warm up) all

> the
> > > > > >> > time. This is not good. I know of some people who have

gotten
> > away
> > > > > >> > with a 180* t-stat, but that would be the absolute minimum.

I
> > > > > >> > recommend staying with the stock 195*. As long as you have a

> good
> > > > > >> > cap and a 50/50 mix, you will run fine at 210.
> > > > > >> >
> > > > > >> > "Red Racer" <rcanden@msn.com> wrote in message
> > > > > >> > news:1063229976.623950@sj-nntpcache-3...
> > > > > >> > > Carlo,
> > > > > >> > >
> > > > > >> > > 210 just plain makes me nervous, but unless you have a

Chevy
> > 355,
> > > > > >> > > or a siamesed bore 400 with 11:1 comp, it is probably

normal.
> > > > > >> > >
> > > > > >> > > RR
> > > > > >> > >
> > > > > >> > >
> > > > > >> > > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > > > > >> > > news:sUw7b.404737$YN5.270253@sccrnsc01...
> > > > > >> > > > You were there to comfort me in a time of stress.......
> > > > > >> > > > BTW - what do you think about 210F. It was there when it

> was
> > > > > >> > > > new, &
> > > > > >> the
> > > > > >> > > > local dealer thought it was normal, so I accepted that -

> but,
> > > > > >> > > > lately,
> > > > > >> so
> > > > > >> > > > many other people freak out when they hear 210F??
> > > > > >> > > >
> > > > > >> > > > --
> > > > > >> > > > Carlo F. Serusa, Jr. RPh
> > > > > >> > > > carlo.jr@comcast.net
> > > > > >> > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > > >> > > > O|||||||O
> > > > > >> > > > '92 Explorer '65 Mustang
> > > > > >> > > >
> > > > > >> > > >
> > > > > >> > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in

> > message
> > > > > >> > > > news:3F5E2EC6.607A43D0@cox.net...
> > > > > >> > > > > Hi Carlo,
> > > > > >> > > > > I didn't do anything.
> > > > > >> > > > > I'm glad to hear it doesn't ever run hotter than

the
> > > > > >> thermostat.
> > > > > >> > > > > God Bless America, ßill O|||||||O
> > > > > >> > > > > mailto:-------------------- http://www.----------.com/
> > > > > >> > > > >
> > > > > >> > > > > "Carlo Jr." wrote:
> > > > > >> > > > > >
> > > > > >> > > > > > Also.........wanted to say "thanks" to Bill.......
> > > > > >> > > > > >
> > > > > >> > > > > > --
> > > > > >> > > > > > Carlo F. Serusa, Jr. RPh
> > > > > >> > > > > > carlo.jr@comcast.net
> > > > > >> > > > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > > >> > > > > > O|||||||O
> > > > > >> > > > > > '92 Explorer '65 Mustang
> > > > > >> > > >
> > > > > >> > > >
> > > > > >> > >
> > > > > >> > >
> > > > > >> >
> > > > > >> >
> > > > > >
> > > > >
> > > >
> > > >
> > >
> > >

> >
> >

>
>




Carlo Jr. 09-17-2003 12:07 AM

Re: Aluminum Radiator
 
OK...........we agree. But does anybody know the actual temperature that the
coolant must be at for the computer to go into closed loop???


--
Carlo F. Serusa, Jr. RPh
carlo.jr@comcast.net
'98 Sahara TJ - '89 YJ - '79 Scout II
O|||||||O
'92 Explorer '65 Mustang


"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:7uw9b.56894$Qy4.25872@fed1read05...
> Carlo, I'm not sure if I'm following who you're responding to but trust

me,
> the factory specified temperature rating of the thermostat is 195 degrees,
> at least in all TJs. Absolutely. In fact, installing a 180 degree
> thermostat where a 195 degree thermostat is specified by the factory is a
> common cause of smog test failures. Absolutely. This is an area I'm well
> versed, this is no rumor.
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
>
> "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> news:Hhw9b.363061$Oz4.140383@rwcrnsc54...
> > No...........
> > everything else as it is supposed to be - If the computer goes into

closed
> > loop @ 200F & a cooler T-stat is installed such that the engine runs @

> 200F,
> > then the computer would be constantly switching between closed loop &

open
> > loop as the engine goes a little above & a little below the threshold.

If
> > the threshold is @ 180F, there would be enough of a difference to run @

> 200F
> > instead of 210F. I see a lot of adds for cooler, higher flow T-Stats,

but
> > wonder if they cause more problems than they solve.....
> >
> > --
> > Carlo F. Serusa, Jr. RPh
> > carlo.jr@comcast.net
> > '98 Sahara TJ - '89 YJ - '79 Scout II
> > O|||||||O
> > '92 Explorer '65 Mustang
> >
> >
> > "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> > news:HHb9b.56247$Qy4.5251@fed1read05...
> > > A 195 degree thermostat is what's required for that year and model XJ,

> if
> > > that's the information you're after.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > KC6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.cox.net/jerrypb/
> > >
> > > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > > news:MAb9b.449196$Ho3.74121@sccrnsc03...
> > > > well - I have been trying to find out the coolant temp required for

> > closed
> > > > loop mode. I looked in the FSM & it only says "operating

temperature"
> I
> > > > tried Google.......& I found that the O2 sensor has to be 600F on a
> > > Toyota,
> > > > but I do not see a specific coolant temp anywhere.
> > > > If you run a cooler T-Stat, it may cause the JTEC to switch, back &

> > forth,
> > > > between open & closed loop.
> > > >
> > > > --
> > > > Carlo F. Serusa, Jr. RPh
> > > > carlo.jr@comcast.net
> > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > O|||||||O
> > > > '92 Explorer '65 Mustang
> > > >
> > > >
> > > > "Rich Pierson" <fist@ptd.net> wrote in message
> > > > news:Xns93F619989635fistptdnet@204.186.201.17...
> > > > > I have a stock thermostat for my 98XJ that I just picked up
> > > > > yesterday.Chrysler Part Number 52028186-AB, its marked 195 to the

> side
> > > of
> > > > > the 'up' arrows :-)
> > > > >
> > > > > Mike Romain <romainm@sympatico.ca> wrote in
> > > > > news:3F60D040.67874FD7@sympatico.ca:
> > > > >
> > > > > > I 'think' it is a 195 in most places, Bill commented something

> about
> > > > > > 210's needed in CA for the smog police...
> > > > > >
> > > > > > Just figure the hotter the t-stat, the more heat inside in the

> > winter.
> > > > > >:-)
> > > > > >
> > > > > > 5 or 10 deg make a 'big' difference at -30 or -40.... Even -
> > > > > > anything.
> > > > > >
> > > > > > Up in the Great White North.
> > > > > > Mike
> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > 88 Cherokee 235 BFG AT's
> > > > > >
> > > > > > TJim wrote:
> > > > > >>
> > > > > >> OK, I seem to be confused between 190 and 195... use whatever

the
> > > > > >> owners manual says you should. You can't go wrong following

the
> > > > > >> owners manual (I hope).
> > > > > >>
> > > > > >> "TJim" <jim@ranlet.nospam.com> wrote in message
> > > > > >> news:1h2dnauT4MTGV_2iU-KYvA@comcast.com...
> > > > > >> > 210 is what most TJs will run with the stock 190* thermostat.

> > You
> > > > > >> > don't want to put in a cooler t-stat or take the t-stat out

> > because
> > > > > >> > the computer will never see operating temperature. If you

> never
> > > > > >> > get to op temp, the computer runs in open loop (warm up) all

> the
> > > > > >> > time. This is not good. I know of some people who have

gotten
> > away
> > > > > >> > with a 180* t-stat, but that would be the absolute minimum.

I
> > > > > >> > recommend staying with the stock 195*. As long as you have a

> good
> > > > > >> > cap and a 50/50 mix, you will run fine at 210.
> > > > > >> >
> > > > > >> > "Red Racer" <rcanden@msn.com> wrote in message
> > > > > >> > news:1063229976.623950@sj-nntpcache-3...
> > > > > >> > > Carlo,
> > > > > >> > >
> > > > > >> > > 210 just plain makes me nervous, but unless you have a

Chevy
> > 355,
> > > > > >> > > or a siamesed bore 400 with 11:1 comp, it is probably

normal.
> > > > > >> > >
> > > > > >> > > RR
> > > > > >> > >
> > > > > >> > >
> > > > > >> > > "Carlo Jr." <carlo.jr@comcast.net> wrote in message
> > > > > >> > > news:sUw7b.404737$YN5.270253@sccrnsc01...
> > > > > >> > > > You were there to comfort me in a time of stress.......
> > > > > >> > > > BTW - what do you think about 210F. It was there when it

> was
> > > > > >> > > > new, &
> > > > > >> the
> > > > > >> > > > local dealer thought it was normal, so I accepted that -

> but,
> > > > > >> > > > lately,
> > > > > >> so
> > > > > >> > > > many other people freak out when they hear 210F??
> > > > > >> > > >
> > > > > >> > > > --
> > > > > >> > > > Carlo F. Serusa, Jr. RPh
> > > > > >> > > > carlo.jr@comcast.net
> > > > > >> > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > > >> > > > O|||||||O
> > > > > >> > > > '92 Explorer '65 Mustang
> > > > > >> > > >
> > > > > >> > > >
> > > > > >> > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in

> > message
> > > > > >> > > > news:3F5E2EC6.607A43D0@cox.net...
> > > > > >> > > > > Hi Carlo,
> > > > > >> > > > > I didn't do anything.
> > > > > >> > > > > I'm glad to hear it doesn't ever run hotter than

the
> > > > > >> thermostat.
> > > > > >> > > > > God Bless America, ßill O|||||||O
> > > > > >> > > > > mailto:-------------------- http://www.----------.com/
> > > > > >> > > > >
> > > > > >> > > > > "Carlo Jr." wrote:
> > > > > >> > > > > >
> > > > > >> > > > > > Also.........wanted to say "thanks" to Bill.......
> > > > > >> > > > > >
> > > > > >> > > > > > --
> > > > > >> > > > > > Carlo F. Serusa, Jr. RPh
> > > > > >> > > > > > carlo.jr@comcast.net
> > > > > >> > > > > > '98 Sahara TJ - '89 YJ - '79 Scout II
> > > > > >> > > > > > O|||||||O
> > > > > >> > > > > > '92 Explorer '65 Mustang
> > > > > >> > > >
> > > > > >> > > >
> > > > > >> > >
> > > > > >> > >
> > > > > >> >
> > > > > >> >
> > > > > >
> > > > >
> > > >
> > > >
> > >
> > >

> >
> >

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