Question about Jeep Cars & Trucks
Is it possible that it was not mounted "check engin" light? I took off my dashboard, but there is no light bulb (no signs to be installed) and does not have the orange slide. The problem is the engine stalls after warm up. I wanted to perform error checking procedure, but its very difficult without "check engine" light :) Of course, I installed a new bulb, but it is not lit The car is Jeep ZJ 5.2 '93
93 ZJ 5.2L grand cherokee.
FSM real. USA.
see page 25-3 for flash codes.. its there. for your jeep
the Diagnostic is activated by fast ignition key cycles ,stated there.
next slide down to wiring. in the window. above.
CEL lamp' schematic pin C2-6 blk/LG color
see the trip switch, this is the silly leaded fuel trip timimer
best i can tell this jeep has the CCD buss
the CLuster is stand alone processor. it communicates
from PCM to the Display VIC. the VIC glows the lamps.
Or has the GDM display, there are 2 options.
BASE graphics display module or VIC option.
ah page 8e-4 tells you the CEL is not hardwired lamp.
it uses the fancy back light display.
so do the key flash trick so see the display show CEL flash codes.
my guess, all this is in the log lost operators guide too.
Posted on Jan 02, 2014
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Posted on Jan 02, 2017
My son has this same car with the same problem. So far after tune up and other process of illimination, the problem points to the catalytic converter. If it is clogged you will get this problem with the rough idle and stalling. Look under the car at night after running it and see if the catalytic glows red. If so you need a new one. Hope this helps.
Posted on Mar 20, 2009
My car (06 GS430) began giving me more frequent "Check VSC" warnings. (Code P0455 in my case. Really glad I bought that OBDII tool--resetting the codes is a snap!)
I knew that a loose gas cap could cause this, so normally I just give it a twist and it tightens. Now I found that no matter how many "clicks" I tightened the gas cap, it would not cinch down snug. The lightest turn the opposite way would open it.
I was all set to head over to CarQuest for a replacement filler cap. But I thought I'd inspect mine first just to see why it stopped holding. Upon inspection, I saw that what holds the cap in place is compression of the rubber O-ring at the back of the cap, which compresses against the filler neck. That apparently was no longer happening.
I carefully removed the O-ring from the cap--using screwdrivers to lift it over the edge of the groove it sits in. Like removing a bike tire from the rim--work your way around. Then I cut a strip of electrical tape about 10" long, and 1/4" wide. I wound this into the curved groove where the O-ring normally sits, just to build up a little thickness. Put the O-ring back in place. Done.
Now the cap tightens like it's supposed to, and thus far, it has stopped the VSC error codes. Don't know if it will fix your issue or not, Good luck.
Posted on May 09, 2009
Anything can cause the check engine light to go on from a loose gas cap, to a transmission issue. When the onboard computer detects an issue, it will restrict performance so as to not damage the engine any further. An Oil change won't affect this light. The only way to determine the cause of the light is to have the computer scanned with an OBD-II tool (Autozone does this for free) to determine the codes and cause for the light. You can also clear the light with the OBD-II tool, but if the problem is still there, the light will just come back on
Posted on Sep 16, 2009
Could be one of several items...I'd check the fuel pump relay, auto shutdown relay and the ignition switch itself. I'd bet on it being one of those relays but, we all have been fooled at least once!!! I'd also make sure that body and engine grounding is good and clean. Relays can't work properly without a good ground.
Posted on Nov 03, 2009
Code 12 = Recently disconnected battery
Code 14 = Coolant sensor high resistance or shorted
Code 43 = Knock sensor or Electronic spark control circuit fault
Code 55 End read code.
Hope helps (remember rated this).
Posted on Jun 12, 2010
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