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I have a 2000 grand cherokee ltd with 4.7L v8. 4WD 94,000 miles. Over the past several months we have had recurring problems with it running very rough and sometimes cutting off. Here is the history.
About 2 years ago replaced the fuel pump and filter.
Recently started rough idle, up and down rpm when idling, whole car rocks side to side, sometimes cuts off. Also tends to have a hard shift from transmission from time to time.
Took to mechanic - did fuel injector and throttle body cleaning and replaced spark plugs. Ran great a few days and problem returned.
Took back to mechanic and he redid fuel injector and throttle body cleaning. Worked fine another week or two and problem started again.
Took back to mechanic and he replaced the throttle control sensor. This worked for about 2 weeks. Then problem started again.
This time took to Jeep Dealer. They replaced purge solenoid. This worked for about 1 month and problem has started again.
Any ideas?
I hate to keep dumping money into the jeep. It also needs front and rear pinion seals, transmission adapter seals, and cv boots. Need to decide to spend a little more to fix or trade it.
Thanks
Oh yeah for what its worth now I was going to help my son use my short finder to look for a short in the wiring which was going to be our next move. I know in your case it would probably cost a fortune to have some mechanic do that and most mechanics nowadays just want to replace parts anyway so even finding one to do a check for shorts is pretty much a miracle in itself.
Gosh I wish I could find something encouraging to tell you,
I used to love Jeeps especially the GC but I am out of love with them just like I lost my love for the Mustang for the same reason. Love the look but hate the problems.
Sorry
I've seen similar posts for this. My 2004 JGC has only 34K on it. It was brought in for diagnosis last week. All they did was reset the computer. The problem persists. I heard rumors that Jeep has issued a fix for this? Anyone know about this or what I can tell the dealer to do since they don't seem to have a good explanation. Seems as though the Pressure control solenoid could be the culprit....
Erratic? Won't idle at all? Up / down / up / down idle?
Is it throwing any codes? (AutoZone etc will read your codes for you.)
" i have a 2003 jgc it has idle problems i have changed all sensors on the throttle body and the air charge temp sensor and still have idle problems .....does ne body know what to do ?? "
Yesterday I drove my '93 Jeep Grand Cherokee home, parked it, and everything was fine. I got in the car 30 minutes later, turned the key, and nothing. The lights came on and I heard the ding ding ding, but the engine didn't even crank and nothing happened.
At first I figured it must be the battery is dead, so today I tried jump starting it. However, even then I would turn the key and nothing.
Now my question is: what could be the problem here? I was low on gas when I was driving it and the gas light was on. If I'm out of gas, would it behave like this? If not the gas, what could be other reasons?
Thanks!
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
engine.
Anyway, based on my experience the first place I would recommend checking when a JGC develops the dreaded stalling problem is the IAC.
Dave
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! :lemon:
...........HELP!!!! Quarkdude
Even though my Jeep is running better now (no stalling), I am still experiencing the bouncing tach syndrome Backing off on the gas suddenly will cause the engine rpm to drop dramatically then climb back up to a steady rpm. I am pretty sure this is due to a vacuum leak in the intake manifold. Hopefully, when we replace the intake manifold gaskets (big job) the bouncing tack problem and the oily IAC will problems will both be solved.
Dave
Hope this helps...
Dave