Last post on Dec 05, 2013 at 4:05 PM
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Jeep Grand Cherokee
#192 of 1240 Re: jeep zj 1995 idle up and down [spiderman229]
Nov 01, 2007 (5:22 pm)
Hello all, new here. I have a 1995 Jeep Grand Cherokee Limited 5.2 v8. I had this problem and was able to fix it in 5 minutes (once I found that it was a T20 screw which took me an hour due to the location). I was having bad shaking and idleing problems. I went to Autozone to buy spark plugs and I mentioned what was happening. He suggested I try an IAC Valve (Idle Air Control). I was able to take the old one out (it was fried) and put the new one in easilly. Shouldn't cost more than $50 or so. Worth a shot, I'm now idleing at 750 RPMs with no ups or downs. Another shot is to check out your vacuum hoses and ensure they are all in good. Hope this helps some of you out there.
#193 of 1240 Re: jeep zj 1995 idle up and down [neral]
Nov 02, 2007 (10:59 am)
THANK YOU! Have no idea if this will work but it isn't anything we have tried. Right now Jeep just sits out front. Will look and hopefully this will be the cure. Beautiful Jeep just won't stay running. Will try your suggestion. Please keep me informed if your problem wasn't solved.
#194 of 1240 Re: jeep zj 1995 idle up and down [neral]
Nov 03, 2007 (4:20 pm)
THANK YOU! It fixed my problem to. It did cost 50.00 and trust me if you hadn't brought this up no one was able to find the problem. Not even the Jeep dealer. I have my Jeep back thanks to this excellent advice. Thank you sooooooo much!
#195 of 1240 Re: Jeep Grand Cherokee 99 shuts of while I'm driving [papen]
Nov 10, 2007 (7:13 am)
Appreciate all of the discussion on this topic because it led me to my problem without spending too much money. My '97 Grand Cherokee has been shutting off
while driving since this past summer, and has left me in dangerous situations, and my catalytic converter and muffler are history due to the backfiring. I replaced battery, distributer cap, rotor, plugs, wires, and coil with no relief.
I found that barely moving the connectors to the ECM/ECU would shut off the engine and would not trigger the check engine light. I removed the coolant tank
and cleaned the 3 connectors. Now, wiggling the wires does not shut the off the
#196 of 1240 Jeep Grand Cherokee Stalling Problem Solved
Nov 10, 2007 (3:30 pm)
Let me relate my experiences with my JGC (96 5.2L Limited). About a month ago, I started experiencing the same common stalling problem (when I took my foot of the gas the engine would die). On top of that, the vehicle information center kept resetting itself when I started the Jeep each morning. My mechanic did not find any codes when he analyzed the diagnostic system. Doing a fair bit of research on the web led me to believe that a common cause for this type of problem is the idle air control (IAC). Indeed after replacing the IAC, my jeep idles nicely about 300 rpm and the VIC stopped resetting itself! I would have never thought the two could be related. My working theory is that the old IAC was shorting and that caused the ECM to go into spasm.
Anyway, based on my experience the first place I would recommend checking when a JGC develops the dreaded stalling problem is the IAC.
#197 of 1240 04 JGC Idle problems
Nov 16, 2007 (6:49 pm)
I am seriously at my wits end! My check engine light was on and I took my 04 JGC Special Edition (it's special alright) 80,000to the dealership. Well they told me all sorts of codes were lighting up. Basically, the hoses needed to be replaced and a flush of the system (667). Oh and he noticed an oil leak ($700.00) in the pan and the back rear brake seal was leaking. Now I was peeved since no one had bothered to tell me this before, seeing as though they are the only ones who have ever touched my Jeep.
I've had nothing but problems with it from the word go. I noticed it seemed to be "misting" about thirty days after I bought it. The mechanic tells me that it's normal for jeeps to feel this way. I hear the big squeak when I shift gears from P to D, finally get them to fix the transmission. Then all of the rear lights go out. I forgot what they said the problem with that was. And to top it all off the engine light flashed and it was rough to say the least. That was the caustic conferter switch (sp sorry).
I've had it with this truck. I've never had so many problems with a vehicle in all of my life! As a single mom it's become too much for me to deal with. Anyway they have fixed this stuff and it's still idling again. Will someone please point me in the right direction? I've got to get it evened out so I can get rid of it. ASAP!
#198 of 1240 Re: 98 Grand Cherokee Stalling [pjgriff2]
Nov 18, 2007 (5:14 am)
I have a similar problem with a 1994 Grand Cherokee Laredo, 4.0L, 4X4. When cold and/or damp it won't start. Mechanics have tried everything: new fuel pump, plugs, wires, rotor, cap, grounding system, etc. A friend's son (former AutoZone employee) suggested the ballast resistor in the ignition system. Discussion from other websites suggest same thing. The ballast resistor does not show up in many schematics. The manuals do not show it. The counter staff at several autoparts stores can't find any such thing in their catalogues. Help! Where is it on this model? Who can help?
#199 of 1240 Jeep keeps on stalling
Nov 19, 2007 (4:12 pm)
Hi. I have a 1994 Jeep Grand Cherokee 4 liter. When I was driving it, it shut off on the highway but I was able to pull to the side. I was able to start it again but the Jeep kept on losing power...rpm's were erratic and I had to shift it into 1st gear to keep it going. I had it towed to my home and replaced the fuel filter, spark plugs, distributor cap, rotor, and wires. After all of this, the Jeep only starts when I hold down the gas. Also, when I took the jeep for a drive around the block, the rpm's would read zero if I pressed the gas and when I took my foot off the gas pedal, the rpm's would climb back but never stabilize. The jeep shudders when it is on and usually stalls. There is no check engine light and the battery and starter are new. Any ideas on what might be causing the problem. Thanks in advance.
#200 of 1240 acceleration problem
Nov 24, 2007 (12:26 pm)
ok, i have a '96 4.0L and every time i go to accellerate it almost dies then it goes. Every once in a while it will die on me when accelerate from a dead stop. Any ideas to whats going on?
#201 of 1240 RE: My battery drains after a day or 2 also
Nov 24, 2007 (1:23 pm)
I too am having the same exact problem with my 1998 Jeep Grand Cherokee Laredo, 4x2, 6 cylinder. Using a test light, I disconnected the positive battery cable and put a test light on the positive terminal of the battery and the other side of the test light I clipped to the unhooked positive battery cable and it lights up showing there is a short somewhere. I pulled the 50 amp Mux/T tow fuse and got the same results ( from the fuse box in the engine compartment ). I also found that if you pull fuse #7 (cluster fuse ) from the fuse box in the passenger area under the glove box and to the right ( passenger kick panel ) the current draw goes to zero, but your instrument cluster wont work either. I took everything out of the dash hoping that when the item causing the short was pulled the current draw would go away. I pulled the insturment cluster, the headlight switch box, the O/D and defroster switch box, the radio, the cigarette lighter connector and the accessory power connector and still the current draw is there. I havent found the answer yet, if anyone is out there that knows how to fix this, could you share what the fix it? I also changed to Alternator which didn't fix the problem. I also unplugged all 3 computer connectors ( computer is located on the passenger side firewall in the engine area ) still the current draw was there, so the computer isn't causing it.