98 TJ problems
 

Have a really weird problem coming home from Death Valley while on vacation.
Just cruising along about 65 with the ac cranking in about 95 degrees out.
the water temp was a shade over 210 and everything was fine. Then without
warning I notice a sudden loss of power as if someone turned the ignition
off. Which scared me because I was on the 127 freeway out in the middle of
nowhere. then the engine came back to life. this cutting in and out occurred
sporadically all the way to the I-15 freeway. It would cut out then come
back online. Everything seemed fine as far as the alt, temp and gas gauge
goes. It finally died 30 miles before Barstow and then I had to be towed in.
After it died I tried to restart it and it started fine. The check engine
light did come on longer then usual but soon went out. I had it towed to a
shop in Barstow the AAA suggested I go. They did not find a thing wrong with
it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no codes
showed up, spark plugs fine, and they test drove it 30 miles. So I drove it
the rest of the way home without the AC running and made it ok. Just really
gets me as to what the problem could be, Any ideas? The only thing that I
can think of is a corroded battery terminal?? A/C might have been drawing
to much current, denying the computer antiquate power??

98 TJ 4.0
45,000
5 spd

Re: 98 TJ problems
 

Possibly the crankshaft position sensor is starting to go bad, it gives
symptoms that are identical to what you encountered. The CPS gives the
master timing signal for the engine and when it goes bad, the engine
just suddenly dies like someone pulled the plug. They do often go
intermittent first so that also goes along with the engine starting up
again later.

Joe wrote:
> Have a really weird problem coming home from Death Valley while on vacation.
> Just cruising along about 65 with the ac cranking in about 95 degrees out.
> the water temp was a shade over 210 and everything was fine. Then without
> warning I notice a sudden loss of power as if someone turned the ignition
> off. Which scared me because I was on the 127 freeway out in the middle of
> nowhere. then the engine came back to life. this cutting in and out occurred
> sporadically all the way to the I-15 freeway. It would cut out then come
> back online. Everything seemed fine as far as the alt, temp and gas gauge
> goes. It finally died 30 miles before Barstow and then I had to be towed in.
> After it died I tried to restart it and it started fine. The check engine
> light did come on longer then usual but soon went out. I had it towed to a
> shop in Barstow the AAA suggested I go. They did not find a thing wrong with
> it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no codes
> showed up, spark plugs fine, and they test drove it 30 miles. So I drove it
> the rest of the way home without the AC running and made it ok. Just really
> gets me as to what the problem could be, Any ideas? The only thing that I
> can think of is a corroded battery terminal?? A/C might have been drawing
> to much current, denying the computer antiquate power??
>
> 98 TJ 4.0
> 45,000
> 5 spd
>
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Re: 98 TJ problems
 

Possibly the crankshaft position sensor is starting to go bad, it gives
symptoms that are identical to what you encountered. The CPS gives the
master timing signal for the engine and when it goes bad, the engine
just suddenly dies like someone pulled the plug. They do often go
intermittent first so that also goes along with the engine starting up
again later.

Joe wrote:
> Have a really weird problem coming home from Death Valley while on vacation.
> Just cruising along about 65 with the ac cranking in about 95 degrees out.
> the water temp was a shade over 210 and everything was fine. Then without
> warning I notice a sudden loss of power as if someone turned the ignition
> off. Which scared me because I was on the 127 freeway out in the middle of
> nowhere. then the engine came back to life. this cutting in and out occurred
> sporadically all the way to the I-15 freeway. It would cut out then come
> back online. Everything seemed fine as far as the alt, temp and gas gauge
> goes. It finally died 30 miles before Barstow and then I had to be towed in.
> After it died I tried to restart it and it started fine. The check engine
> light did come on longer then usual but soon went out. I had it towed to a
> shop in Barstow the AAA suggested I go. They did not find a thing wrong with
> it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no codes
> showed up, spark plugs fine, and they test drove it 30 miles. So I drove it
> the rest of the way home without the AC running and made it ok. Just really
> gets me as to what the problem could be, Any ideas? The only thing that I
> can think of is a corroded battery terminal?? A/C might have been drawing
> to much current, denying the computer antiquate power??
>
> 98 TJ 4.0
> 45,000
> 5 spd
>
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Re: 98 TJ problems
 

Possibly the crankshaft position sensor is starting to go bad, it gives
symptoms that are identical to what you encountered. The CPS gives the
master timing signal for the engine and when it goes bad, the engine
just suddenly dies like someone pulled the plug. They do often go
intermittent first so that also goes along with the engine starting up
again later.

Joe wrote:
> Have a really weird problem coming home from Death Valley while on vacation.
> Just cruising along about 65 with the ac cranking in about 95 degrees out.
> the water temp was a shade over 210 and everything was fine. Then without
> warning I notice a sudden loss of power as if someone turned the ignition
> off. Which scared me because I was on the 127 freeway out in the middle of
> nowhere. then the engine came back to life. this cutting in and out occurred
> sporadically all the way to the I-15 freeway. It would cut out then come
> back online. Everything seemed fine as far as the alt, temp and gas gauge
> goes. It finally died 30 miles before Barstow and then I had to be towed in.
> After it died I tried to restart it and it started fine. The check engine
> light did come on longer then usual but soon went out. I had it towed to a
> shop in Barstow the AAA suggested I go. They did not find a thing wrong with
> it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no codes
> showed up, spark plugs fine, and they test drove it 30 miles. So I drove it
> the rest of the way home without the AC running and made it ok. Just really
> gets me as to what the problem could be, Any ideas? The only thing that I
> can think of is a corroded battery terminal?? A/C might have been drawing
> to much current, denying the computer antiquate power??
>
> 98 TJ 4.0
> 45,000
> 5 spd
>
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Re: 98 TJ problems
 

Possibly the crankshaft position sensor is starting to go bad, it gives
symptoms that are identical to what you encountered. The CPS gives the
master timing signal for the engine and when it goes bad, the engine
just suddenly dies like someone pulled the plug. They do often go
intermittent first so that also goes along with the engine starting up
again later.

Joe wrote:
> Have a really weird problem coming home from Death Valley while on vacation.
> Just cruising along about 65 with the ac cranking in about 95 degrees out.
> the water temp was a shade over 210 and everything was fine. Then without
> warning I notice a sudden loss of power as if someone turned the ignition
> off. Which scared me because I was on the 127 freeway out in the middle of
> nowhere. then the engine came back to life. this cutting in and out occurred
> sporadically all the way to the I-15 freeway. It would cut out then come
> back online. Everything seemed fine as far as the alt, temp and gas gauge
> goes. It finally died 30 miles before Barstow and then I had to be towed in.
> After it died I tried to restart it and it started fine. The check engine
> light did come on longer then usual but soon went out. I had it towed to a
> shop in Barstow the AAA suggested I go. They did not find a thing wrong with
> it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no codes
> showed up, spark plugs fine, and they test drove it 30 miles. So I drove it
> the rest of the way home without the AC running and made it ok. Just really
> gets me as to what the problem could be, Any ideas? The only thing that I
> can think of is a corroded battery terminal?? A/C might have been drawing
> to much current, denying the computer antiquate power??
>
> 98 TJ 4.0
> 45,000
> 5 spd
>
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Re: 98 TJ problems
 

mine did that, Jeep was running then got really ruff idling and engine died.
took 3-4 attempt before it start again . That was Monday night. Tuesday was
fine and then Wed morning the Jeep never restart until CPS been replace.....

"Jerry Bransford" <jerrypb@cox.net> a écrit dans le message de news:
BUdke.2205$tp.349@fed1read05...
> Possibly the crankshaft position sensor is starting to go bad, it gives
> symptoms that are identical to what you encountered. The CPS gives the
> master timing signal for the engine and when it goes bad, the engine just
> suddenly dies like someone pulled the plug. They do often go intermittent
> first so that also goes along with the engine starting up again later.
>
> Joe wrote:
>> Have a really weird problem coming home from Death Valley while on
>> vacation.
>> Just cruising along about 65 with the ac cranking in about 95 degrees
>> out.
>> the water temp was a shade over 210 and everything was fine. Then without
>> warning I notice a sudden loss of power as if someone turned the ignition
>> off. Which scared me because I was on the 127 freeway out in the middle
>> of
>> nowhere. then the engine came back to life. this cutting in and out
>> occurred
>> sporadically all the way to the I-15 freeway. It would cut out then come
>> back online. Everything seemed fine as far as the alt, temp and gas gauge
>> goes. It finally died 30 miles before Barstow and then I had to be towed
>> in.
>> After it died I tried to restart it and it started fine. The check engine
>> light did come on longer then usual but soon went out. I had it towed to
>> a
>> shop in Barstow the AAA suggested I go. They did not find a thing wrong
>> with
>> it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no
>> codes
>> showed up, spark plugs fine, and they test drove it 30 miles. So I drove
>> it
>> the rest of the way home without the AC running and made it ok. Just
>> really
>> gets me as to what the problem could be, Any ideas? The only thing that I
>> can think of is a corroded battery terminal?? A/C might have been
>> drawing
>> to much current, denying the computer antiquate power??
>>
>> 98 TJ 4.0
>> 45,000
>> 5 spd
>>
>>
>
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/

Re: 98 TJ problems
 

mine did that, Jeep was running then got really ruff idling and engine died.
took 3-4 attempt before it start again . That was Monday night. Tuesday was
fine and then Wed morning the Jeep never restart until CPS been replace.....

"Jerry Bransford" <jerrypb@cox.net> a écrit dans le message de news:
BUdke.2205$tp.349@fed1read05...
> Possibly the crankshaft position sensor is starting to go bad, it gives
> symptoms that are identical to what you encountered. The CPS gives the
> master timing signal for the engine and when it goes bad, the engine just
> suddenly dies like someone pulled the plug. They do often go intermittent
> first so that also goes along with the engine starting up again later.
>
> Joe wrote:
>> Have a really weird problem coming home from Death Valley while on
>> vacation.
>> Just cruising along about 65 with the ac cranking in about 95 degrees
>> out.
>> the water temp was a shade over 210 and everything was fine. Then without
>> warning I notice a sudden loss of power as if someone turned the ignition
>> off. Which scared me because I was on the 127 freeway out in the middle
>> of
>> nowhere. then the engine came back to life. this cutting in and out
>> occurred
>> sporadically all the way to the I-15 freeway. It would cut out then come
>> back online. Everything seemed fine as far as the alt, temp and gas gauge
>> goes. It finally died 30 miles before Barstow and then I had to be towed
>> in.
>> After it died I tried to restart it and it started fine. The check engine
>> light did come on longer then usual but soon went out. I had it towed to
>> a
>> shop in Barstow the AAA suggested I go. They did not find a thing wrong
>> with
>> it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no
>> codes
>> showed up, spark plugs fine, and they test drove it 30 miles. So I drove
>> it
>> the rest of the way home without the AC running and made it ok. Just
>> really
>> gets me as to what the problem could be, Any ideas? The only thing that I
>> can think of is a corroded battery terminal?? A/C might have been
>> drawing
>> to much current, denying the computer antiquate power??
>>
>> 98 TJ 4.0
>> 45,000
>> 5 spd
>>
>>
>
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/

Re: 98 TJ problems
 

mine did that, Jeep was running then got really ruff idling and engine died.
took 3-4 attempt before it start again . That was Monday night. Tuesday was
fine and then Wed morning the Jeep never restart until CPS been replace.....

"Jerry Bransford" <jerrypb@cox.net> a écrit dans le message de news:
BUdke.2205$tp.349@fed1read05...
> Possibly the crankshaft position sensor is starting to go bad, it gives
> symptoms that are identical to what you encountered. The CPS gives the
> master timing signal for the engine and when it goes bad, the engine just
> suddenly dies like someone pulled the plug. They do often go intermittent
> first so that also goes along with the engine starting up again later.
>
> Joe wrote:
>> Have a really weird problem coming home from Death Valley while on
>> vacation.
>> Just cruising along about 65 with the ac cranking in about 95 degrees
>> out.
>> the water temp was a shade over 210 and everything was fine. Then without
>> warning I notice a sudden loss of power as if someone turned the ignition
>> off. Which scared me because I was on the 127 freeway out in the middle
>> of
>> nowhere. then the engine came back to life. this cutting in and out
>> occurred
>> sporadically all the way to the I-15 freeway. It would cut out then come
>> back online. Everything seemed fine as far as the alt, temp and gas gauge
>> goes. It finally died 30 miles before Barstow and then I had to be towed
>> in.
>> After it died I tried to restart it and it started fine. The check engine
>> light did come on longer then usual but soon went out. I had it towed to
>> a
>> shop in Barstow the AAA suggested I go. They did not find a thing wrong
>> with
>> it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no
>> codes
>> showed up, spark plugs fine, and they test drove it 30 miles. So I drove
>> it
>> the rest of the way home without the AC running and made it ok. Just
>> really
>> gets me as to what the problem could be, Any ideas? The only thing that I
>> can think of is a corroded battery terminal?? A/C might have been
>> drawing
>> to much current, denying the computer antiquate power??
>>
>> 98 TJ 4.0
>> 45,000
>> 5 spd
>>
>>
>
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/

Re: 98 TJ problems
 

mine did that, Jeep was running then got really ruff idling and engine died.
took 3-4 attempt before it start again . That was Monday night. Tuesday was
fine and then Wed morning the Jeep never restart until CPS been replace.....

"Jerry Bransford" <jerrypb@cox.net> a écrit dans le message de news:
BUdke.2205$tp.349@fed1read05...
> Possibly the crankshaft position sensor is starting to go bad, it gives
> symptoms that are identical to what you encountered. The CPS gives the
> master timing signal for the engine and when it goes bad, the engine just
> suddenly dies like someone pulled the plug. They do often go intermittent
> first so that also goes along with the engine starting up again later.
>
> Joe wrote:
>> Have a really weird problem coming home from Death Valley while on
>> vacation.
>> Just cruising along about 65 with the ac cranking in about 95 degrees
>> out.
>> the water temp was a shade over 210 and everything was fine. Then without
>> warning I notice a sudden loss of power as if someone turned the ignition
>> off. Which scared me because I was on the 127 freeway out in the middle
>> of
>> nowhere. then the engine came back to life. this cutting in and out
>> occurred
>> sporadically all the way to the I-15 freeway. It would cut out then come
>> back online. Everything seemed fine as far as the alt, temp and gas gauge
>> goes. It finally died 30 miles before Barstow and then I had to be towed
>> in.
>> After it died I tried to restart it and it started fine. The check engine
>> light did come on longer then usual but soon went out. I had it towed to
>> a
>> shop in Barstow the AAA suggested I go. They did not find a thing wrong
>> with
>> it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no
>> codes
>> showed up, spark plugs fine, and they test drove it 30 miles. So I drove
>> it
>> the rest of the way home without the AC running and made it ok. Just
>> really
>> gets me as to what the problem could be, Any ideas? The only thing that I
>> can think of is a corroded battery terminal?? A/C might have been
>> drawing
>> to much current, denying the computer antiquate power??
>>
>> 98 TJ 4.0
>> 45,000
>> 5 spd
>>
>>
>
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/

Re: 98 TJ problems
 

Every CPS I have seen fail were just perfect still. The failure is only
in the plug connections. They are very small computer signal pins and
sit right on top of the exhaust manifold so are subjected to wild
temperature swings.
Opening the plug and cleaning it with a good spray contact cleaner has
fixed every one 'I' have come across.

If you google it, you will see lot of folks say 'oh, you can get some
more starts out of it if you just unplug it to 'reset' it.' Well, they
do not 'reset', the movement just cleans the contacts slightly.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Patrick wrote:
>
> mine did that, Jeep was running then got really ruff idling and engine died.
> took 3-4 attempt before it start again . That was Monday night. Tuesday was
> fine and then Wed morning the Jeep never restart until CPS been replace.....
>
> "Jerry Bransford" <jerrypb@cox.net> a écrit dans le message de news:
> BUdke.2205$tp.349@fed1read05...
> > Possibly the crankshaft position sensor is starting to go bad, it gives
> > symptoms that are identical to what you encountered. The CPS gives the
> > master timing signal for the engine and when it goes bad, the engine just
> > suddenly dies like someone pulled the plug. They do often go intermittent
> > first so that also goes along with the engine starting up again later.
> >
> > Joe wrote:
> >> Have a really weird problem coming home from Death Valley while on
> >> vacation.
> >> Just cruising along about 65 with the ac cranking in about 95 degrees
> >> out.
> >> the water temp was a shade over 210 and everything was fine. Then without
> >> warning I notice a sudden loss of power as if someone turned the ignition
> >> off. Which scared me because I was on the 127 freeway out in the middle
> >> of
> >> nowhere. then the engine came back to life. this cutting in and out
> >> occurred
> >> sporadically all the way to the I-15 freeway. It would cut out then come
> >> back online. Everything seemed fine as far as the alt, temp and gas gauge
> >> goes. It finally died 30 miles before Barstow and then I had to be towed
> >> in.
> >> After it died I tried to restart it and it started fine. The check engine
> >> light did come on longer then usual but soon went out. I had it towed to
> >> a
> >> shop in Barstow the AAA suggested I go. They did not find a thing wrong
> >> with
> >> it. Cat was fine, the MAP was ok. cap and rotor ok, fuel pump ok, no
> >> codes
> >> showed up, spark plugs fine, and they test drove it 30 miles. So I drove
> >> it
> >> the rest of the way home without the AC running and made it ok. Just
> >> really
> >> gets me as to what the problem could be, Any ideas? The only thing that I
> >> can think of is a corroded battery terminal?? A/C might have been
> >> drawing
> >> to much current, denying the computer antiquate power??
> >>
> >> 98 TJ 4.0
> >> 45,000
> >> 5 spd
> >>
> >>
> >
> > --
> > Jerry Bransford
> > PP-ASEL N6TAY
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/