Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

jimboe via CarKB.com did pass the time by typing:

> Warm engine idles at ~620. The vehicle has no issues starting, and does not
> stall at all. I filled the Jeep 7/8 full with 93 (it had only been fed 87)
> and then proceeded as follows.

Idle speed for the 93 ZJ 4.0 is 600RPM

> I disconnected the battery for a few minutes to reset the PCM and there's no
> differece in idle speed.

But the idle should have been smoother.

> The most worrisome problem is an engine noise which is difficult to pinpoint
> and describe. It's not particularly loud, but aside from the normal engine
> rythm, for around 2 of every 3 seconds (but in no way is it precise), I hear
> sounds which I'll attempt to describe in the following ways.
>
> Imagine the sound the cappucino machine makes when it's preparing a cup of
> joe, or perhaps the sound some very badly failing hard drives will make--
> it's that type of sound, on and off, alot, but not percisely timed and
> therefore not rythmic,

Bearing noise. Pop the distributor cap and see if you can wiggle
the rotor side to side. There should be no slop. There should also
be no oil in the bottom. A failing bushing in the distributor can
cause this noise.

> Someone else specualted perhaps the Water Pump.

Water pump would be my first guess.

Get yourself one of these.
http://www2.northerntool.com/product-1/385487.htm
They work loads better than ears or the old screwdriver trick.

> The more minor problems are as follows:
> * Anti-freeze reservoir has a crack at the top of it which is causing some
> leakage overnight. I'm thinking of trying to seal the reservoir be maybe
> using a hot nail, or a hot glue gun-- or maybe some epoxy?? Plausible?

That's some screwy plastic to work with. Forget the glue gun, it won't stick.
A hot nail might work. So could some epoxy made for the plastic. Look
on the bottle for the type of plastic it's made of. Little triangle thing
with a number usually. Then get an epoxy for that type of plastic.

> * The A/C doesn't work. Probably a leak

R134a. Refill kits are cheap, get one with a gauge and don't put
in an oil charge, you more than likely do not need it.
(By the way, there was a recall for leaking accumulator in that model
year. Check to see if the recall was done, it might be a free fix
from the dealer)

> * There's a sensor in the side of the oil pan which appears to have a very
> slow leak. Not sure what that sensor is called, but I'd like to change it
> next Oil change.

That is the oil level sender.
Here is a ref
http://revbeergoggles.com/Fixes/diagnostics.html

> * The 4WD Switch on the transfer case appears to be faulting ("Service 4WD
> SWITCH" on console).

Connector needs to be cleaned. Not a critical error long as you remember
where you put the transfer case shifter.

> * The rear wiper moves across, but not back to the "park" position. It makes
> a loud vibrating noise when trying to return.

Your going to have to take it out and clean it before it self destructs.
Could be an internal gear has broken or the park switch corroded out.

> * The antenna apparently got bent back while in the up position some time ago,
> and subsequently, the cable has been disconnected from it. The motor sounds
> to be in working order so I'd assume I could just get an antenna and cable
> from AutoZone for $16 and do that replacement.

Won't work. You need the antenna mast from the dealer or opt for an
aftermarket rubber antenna.

If I can find the part number I'll post a followup.
By the way, the motor is a pain in the ass to get at.

> * The factory alarm sometimes goes off for for no reason. Someone mentioned
> to me there is some sort of screw to adjust sensitivity on some alrams. I
> don't know if this is the case here.

Nope. This can happen if the door switches or hood switch get contaminated
with salt. The salt provides just enough current to set off the alarm sensor.
Start with the hood switch. It's down on the passenger side. Just pull the
wire off and put some tape over it.

> * I'd like to get an additional remote for the door locks/alarm. Don't know
> if that possible for a reasonable cost

eBay.

I went aftermarket with power windows, starter, and 300ft range remote.


--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

DougW wrote:
>> Warm engine idles at ~620. The vehicle has no issues starting, and does not
>> stall at all. I filled the Jeep 7/8 full with 93 (it had only been fed 87)
>> and then proceeded as follows.
>
>Idle speed for the 93 ZJ 4.0 is 600RPM
Ugh, sorry I always leave something out. It's a 5.2.

....
>Get yourself one of these.
>http://www2.northerntool.com/product-1/385487.htm
>They work loads better than ears or the old screwdriver trick.
Been there done that, still not evident precisely where it comes from-- but,
it does seem as though it is slightly more apparent from underneath, by the
oil pan.

>> leakage overnight. I'm thinking of trying to seal the reservoir be maybe
>> using a hot nail, or a hot glue gun-- or maybe some epoxy?? Plausible?
>
>on the bottle for the type of plastic it's made of. Little triangle thing
>with a number usually. Then get an epoxy for that type of plastic.
I bought this epoxy at autozone, I believe it's called "Steel Weld" or
something like that (don't have it in front of me now). It says it does
plastics, and also specifically mentions antifreeze in its' "Liquid
resistance" section.. none of the others I looked at mentioned this so Im
gonna try with that.

>> The 4WD Switch on the transfer case appears to be faulting ("Service 4WD
>> SWITCH" on console).
>
>Connector needs to be cleaned. Not a critical error long as you remember
>where you put the transfer case shifter.
Can that be done without dropping the trans case? I know it's kind of hard to
get at, but it doesn't seem impossible.

>> * The antenna apparently got bent back while in the up position some time ago,
>> and subsequently, the cable has been disconnected from it. The motor sounds
>> to be in working order so I'd assume I could just get an antenna and cable
>> from AutoZone for $16 and do that replacement.
>
>Won't work. You need the antenna mast from the dealer or opt for an
>aftermarket rubber antenna.
Interesting, since it comes up in AutoZone's computer for 96 JGC 5.2 as a
compatible part.. hmm


Thanks for the excellent reply!

Jim

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200512/1

Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

DougW wrote:
>> Warm engine idles at ~620. The vehicle has no issues starting, and does not
>> stall at all. I filled the Jeep 7/8 full with 93 (it had only been fed 87)
>> and then proceeded as follows.
>
>Idle speed for the 93 ZJ 4.0 is 600RPM
Ugh, sorry I always leave something out. It's a 5.2.

....
>Get yourself one of these.
>http://www2.northerntool.com/product-1/385487.htm
>They work loads better than ears or the old screwdriver trick.
Been there done that, still not evident precisely where it comes from-- but,
it does seem as though it is slightly more apparent from underneath, by the
oil pan.

>> leakage overnight. I'm thinking of trying to seal the reservoir be maybe
>> using a hot nail, or a hot glue gun-- or maybe some epoxy?? Plausible?
>
>on the bottle for the type of plastic it's made of. Little triangle thing
>with a number usually. Then get an epoxy for that type of plastic.
I bought this epoxy at autozone, I believe it's called "Steel Weld" or
something like that (don't have it in front of me now). It says it does
plastics, and also specifically mentions antifreeze in its' "Liquid
resistance" section.. none of the others I looked at mentioned this so Im
gonna try with that.

>> The 4WD Switch on the transfer case appears to be faulting ("Service 4WD
>> SWITCH" on console).
>
>Connector needs to be cleaned. Not a critical error long as you remember
>where you put the transfer case shifter.
Can that be done without dropping the trans case? I know it's kind of hard to
get at, but it doesn't seem impossible.

>> * The antenna apparently got bent back while in the up position some time ago,
>> and subsequently, the cable has been disconnected from it. The motor sounds
>> to be in working order so I'd assume I could just get an antenna and cable
>> from AutoZone for $16 and do that replacement.
>
>Won't work. You need the antenna mast from the dealer or opt for an
>aftermarket rubber antenna.
Interesting, since it comes up in AutoZone's computer for 96 JGC 5.2 as a
compatible part.. hmm


Thanks for the excellent reply!

Jim

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200512/1

Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

DougW wrote:
>> Warm engine idles at ~620. The vehicle has no issues starting, and does not
>> stall at all. I filled the Jeep 7/8 full with 93 (it had only been fed 87)
>> and then proceeded as follows.
>
>Idle speed for the 93 ZJ 4.0 is 600RPM
Ugh, sorry I always leave something out. It's a 5.2.

....
>Get yourself one of these.
>http://www2.northerntool.com/product-1/385487.htm
>They work loads better than ears or the old screwdriver trick.
Been there done that, still not evident precisely where it comes from-- but,
it does seem as though it is slightly more apparent from underneath, by the
oil pan.

>> leakage overnight. I'm thinking of trying to seal the reservoir be maybe
>> using a hot nail, or a hot glue gun-- or maybe some epoxy?? Plausible?
>
>on the bottle for the type of plastic it's made of. Little triangle thing
>with a number usually. Then get an epoxy for that type of plastic.
I bought this epoxy at autozone, I believe it's called "Steel Weld" or
something like that (don't have it in front of me now). It says it does
plastics, and also specifically mentions antifreeze in its' "Liquid
resistance" section.. none of the others I looked at mentioned this so Im
gonna try with that.

>> The 4WD Switch on the transfer case appears to be faulting ("Service 4WD
>> SWITCH" on console).
>
>Connector needs to be cleaned. Not a critical error long as you remember
>where you put the transfer case shifter.
Can that be done without dropping the trans case? I know it's kind of hard to
get at, but it doesn't seem impossible.

>> * The antenna apparently got bent back while in the up position some time ago,
>> and subsequently, the cable has been disconnected from it. The motor sounds
>> to be in working order so I'd assume I could just get an antenna and cable
>> from AutoZone for $16 and do that replacement.
>
>Won't work. You need the antenna mast from the dealer or opt for an
>aftermarket rubber antenna.
Interesting, since it comes up in AutoZone's computer for 96 JGC 5.2 as a
compatible part.. hmm


Thanks for the excellent reply!

Jim

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200512/1

Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

DougW wrote:
>jimboe via CarKB.com did pass the time by typing:
>> * There's a sensor in the side of the oil pan which appears to have a very
>> slow leak. Not sure what that sensor is called, but I'd like to change it
>> next Oil change.
>
>That is the oil level sender.
>Here is a ref
>http://revbeergoggles.com/Fixes/diagnostics.html

BTW: would that be this?
NIEHOFF OIL SENDING UNIT for a 1993 JEEP GRAND CHEROKEE 4WD

http://www.autozone.com/servlet/UiBr...%7ENONE%7C%7EB


TIA

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200512/1

Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

DougW wrote:
>jimboe via CarKB.com did pass the time by typing:
>> * There's a sensor in the side of the oil pan which appears to have a very
>> slow leak. Not sure what that sensor is called, but I'd like to change it
>> next Oil change.
>
>That is the oil level sender.
>Here is a ref
>http://revbeergoggles.com/Fixes/diagnostics.html

BTW: would that be this?
NIEHOFF OIL SENDING UNIT for a 1993 JEEP GRAND CHEROKEE 4WD

http://www.autozone.com/servlet/UiBr...%7ENONE%7C%7EB


TIA

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200512/1

Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

DougW wrote:
>jimboe via CarKB.com did pass the time by typing:
>> * There's a sensor in the side of the oil pan which appears to have a very
>> slow leak. Not sure what that sensor is called, but I'd like to change it
>> next Oil change.
>
>That is the oil level sender.
>Here is a ref
>http://revbeergoggles.com/Fixes/diagnostics.html

BTW: would that be this?
NIEHOFF OIL SENDING UNIT for a 1993 JEEP GRAND CHEROKEE 4WD

http://www.autozone.com/servlet/UiBr...%7ENONE%7C%7EB


TIA

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200512/1

Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

It looks as if you are trying to seal a plastic coolant reservoir tank. I
have had good luck sealing these with silicon sealer, aka RTV. Unless they
have improved epoxy since the last time I checked, it is not flexible enough
for this application. Good luck though. Whatever you use, a clean base
for the repair will be essential.

Earle

"jimboe via CarKB.com" <u15312@uwe> wrote in message
news:58d5c3f52f950@uwe...
> DougW wrote:
> >> Warm engine idles at ~620. The vehicle has no issues starting, and does
not
> >> stall at all. I filled the Jeep 7/8 full with 93 (it had only been fed
87)
> >> and then proceeded as follows.
> >
> >Idle speed for the 93 ZJ 4.0 is 600RPM
> Ugh, sorry I always leave something out. It's a 5.2.
>
> ...
> >Get yourself one of these.
> >http://www2.northerntool.com/product-1/385487.htm
> >They work loads better than ears or the old screwdriver trick.
> Been there done that, still not evident precisely where it comes from--
but,
> it does seem as though it is slightly more apparent from underneath, by
the
> oil pan.
>
> >> leakage overnight. I'm thinking of trying to seal the reservoir be
maybe
> >> using a hot nail, or a hot glue gun-- or maybe some epoxy?? Plausible?
> >
> >on the bottle for the type of plastic it's made of. Little triangle
thing
> >with a number usually. Then get an epoxy for that type of plastic.
> I bought this epoxy at autozone, I believe it's called "Steel Weld" or
> something like that (don't have it in front of me now). It says it does
> plastics, and also specifically mentions antifreeze in its' "Liquid
> resistance" section.. none of the others I looked at mentioned this so Im
> gonna try with that.
>
> >> The 4WD Switch on the transfer case appears to be faulting ("Service
4WD
> >> SWITCH" on console).
> >
> >Connector needs to be cleaned. Not a critical error long as you remember
> >where you put the transfer case shifter.
> Can that be done without dropping the trans case? I know it's kind of hard
to
> get at, but it doesn't seem impossible.
>
> >> * The antenna apparently got bent back while in the up position some
time ago,
> >> and subsequently, the cable has been disconnected from it. The motor
sounds
> >> to be in working order so I'd assume I could just get an antenna and
cable
> >> from AutoZone for $16 and do that replacement.
> >
> >Won't work. You need the antenna mast from the dealer or opt for an
> >aftermarket rubber antenna.
> Interesting, since it comes up in AutoZone's computer for 96 JGC 5.2 as a
> compatible part.. hmm
>
>
> Thanks for the excellent reply!
>
> Jim
>
> --
> Message posted via CarKB.com
> http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200512/1

Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

It looks as if you are trying to seal a plastic coolant reservoir tank. I
have had good luck sealing these with silicon sealer, aka RTV. Unless they
have improved epoxy since the last time I checked, it is not flexible enough
for this application. Good luck though. Whatever you use, a clean base
for the repair will be essential.

Earle

"jimboe via CarKB.com" <u15312@uwe> wrote in message
news:58d5c3f52f950@uwe...
> DougW wrote:
> >> Warm engine idles at ~620. The vehicle has no issues starting, and does
not
> >> stall at all. I filled the Jeep 7/8 full with 93 (it had only been fed
87)
> >> and then proceeded as follows.
> >
> >Idle speed for the 93 ZJ 4.0 is 600RPM
> Ugh, sorry I always leave something out. It's a 5.2.
>
> ...
> >Get yourself one of these.
> >http://www2.northerntool.com/product-1/385487.htm
> >They work loads better than ears or the old screwdriver trick.
> Been there done that, still not evident precisely where it comes from--
but,
> it does seem as though it is slightly more apparent from underneath, by
the
> oil pan.
>
> >> leakage overnight. I'm thinking of trying to seal the reservoir be
maybe
> >> using a hot nail, or a hot glue gun-- or maybe some epoxy?? Plausible?
> >
> >on the bottle for the type of plastic it's made of. Little triangle
thing
> >with a number usually. Then get an epoxy for that type of plastic.
> I bought this epoxy at autozone, I believe it's called "Steel Weld" or
> something like that (don't have it in front of me now). It says it does
> plastics, and also specifically mentions antifreeze in its' "Liquid
> resistance" section.. none of the others I looked at mentioned this so Im
> gonna try with that.
>
> >> The 4WD Switch on the transfer case appears to be faulting ("Service
4WD
> >> SWITCH" on console).
> >
> >Connector needs to be cleaned. Not a critical error long as you remember
> >where you put the transfer case shifter.
> Can that be done without dropping the trans case? I know it's kind of hard
to
> get at, but it doesn't seem impossible.
>
> >> * The antenna apparently got bent back while in the up position some
time ago,
> >> and subsequently, the cable has been disconnected from it. The motor
sounds
> >> to be in working order so I'd assume I could just get an antenna and
cable
> >> from AutoZone for $16 and do that replacement.
> >
> >Won't work. You need the antenna mast from the dealer or opt for an
> >aftermarket rubber antenna.
> Interesting, since it comes up in AutoZone's computer for 96 JGC 5.2 as a
> compatible part.. hmm
>
>
> Thanks for the excellent reply!
>
> Jim
>
> --
> Message posted via CarKB.com
> http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200512/1

Re: 93 GCL ZJ: Low idle, engine noise +other probs (long)
 

It looks as if you are trying to seal a plastic coolant reservoir tank. I
have had good luck sealing these with silicon sealer, aka RTV. Unless they
have improved epoxy since the last time I checked, it is not flexible enough
for this application. Good luck though. Whatever you use, a clean base
for the repair will be essential.

Earle

"jimboe via CarKB.com" <u15312@uwe> wrote in message
news:58d5c3f52f950@uwe...
> DougW wrote:
> >> Warm engine idles at ~620. The vehicle has no issues starting, and does
not
> >> stall at all. I filled the Jeep 7/8 full with 93 (it had only been fed
87)
> >> and then proceeded as follows.
> >
> >Idle speed for the 93 ZJ 4.0 is 600RPM
> Ugh, sorry I always leave something out. It's a 5.2.
>
> ...
> >Get yourself one of these.
> >http://www2.northerntool.com/product-1/385487.htm
> >They work loads better than ears or the old screwdriver trick.
> Been there done that, still not evident precisely where it comes from--
but,
> it does seem as though it is slightly more apparent from underneath, by
the
> oil pan.
>
> >> leakage overnight. I'm thinking of trying to seal the reservoir be
maybe
> >> using a hot nail, or a hot glue gun-- or maybe some epoxy?? Plausible?
> >
> >on the bottle for the type of plastic it's made of. Little triangle
thing
> >with a number usually. Then get an epoxy for that type of plastic.
> I bought this epoxy at autozone, I believe it's called "Steel Weld" or
> something like that (don't have it in front of me now). It says it does
> plastics, and also specifically mentions antifreeze in its' "Liquid
> resistance" section.. none of the others I looked at mentioned this so Im
> gonna try with that.
>
> >> The 4WD Switch on the transfer case appears to be faulting ("Service
4WD
> >> SWITCH" on console).
> >
> >Connector needs to be cleaned. Not a critical error long as you remember
> >where you put the transfer case shifter.
> Can that be done without dropping the trans case? I know it's kind of hard
to
> get at, but it doesn't seem impossible.
>
> >> * The antenna apparently got bent back while in the up position some
time ago,
> >> and subsequently, the cable has been disconnected from it. The motor
sounds
> >> to be in working order so I'd assume I could just get an antenna and
cable
> >> from AutoZone for $16 and do that replacement.
> >
> >Won't work. You need the antenna mast from the dealer or opt for an
> >aftermarket rubber antenna.
> Interesting, since it comes up in AutoZone's computer for 96 JGC 5.2 as a
> compatible part.. hmm
>
>
> Thanks for the excellent reply!
>
> Jim
>
> --
> Message posted via CarKB.com
> http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200512/1