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Jeep Grand Cherokee Start Stall Idle Problems

586 messages,  Last post on Nov 20, 2009 at 2:14 PM

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#22 of 586 2000 JGC Laredo won't start by caz3 Aug 31, 2007 (7:44 am)
Yesterday my wife ran some errands and the jeep (4.7L, 115k miles) ran fine. Last night when I went to start it, it turned over fine but just wouldn't start. I tried starting in neutral, fiddling the shifter in every conceivable direction, and trying with gas pedal in all possible positions. The only problem we've ever had with it was last week the tach would bounce around when traveling at 50 mph. Figured it was the TPS and the shop we took it to (we were on the road) confirmed and replaced it. Worked fine until last night's non start event. Any ideas?
#23 of 586 Re: HELP!!! 96 Country won't start [em82678] by timmboj Sep 12, 2007 (4:18 am)
Replying to: em82678 (Aug 16, 2007 2:06 pm) I'm having the same issues with my 93. My mechanic wanted to replace the computer at $1200 installed but I'm holding off until I learn more. What we did discover is that ONLY WHEN the "check engine" light is lit will the engine start. If not, the engine just turns over and over but doesn't start. So they tell me to keep turning the key until the light turns on but it rarely does. I've tried the Nuetral Start, the pushing the shifter in Park further, jiggling keys, etc. but nothing works. May have them try the CAMshaft Position Sensor, the RENIX / Non-HO Engine Sensor / TPS and NSS options before we do the computer thing. Replies to this message: mountanbiker (Jan 25, 2009 10:21 am) cozaluk (Apr 28, 2009 9:59 am)
#24 of 586 2005 Grand Cherokee won't start by dew88 Sep 21, 2007 (6:13 am)
I am having starting issues with my 05 Grand Cherokee (3.7L, automatic). Every once in a while it will not start. When you turn the key there is nothing, no turnover, no sound. The first time this happened I tried jiggling the keys, moving the steering wheel, making sure the vehicle was in park by moving the shifter. I thought that there might be a security mechanism in the key (which the battery just did in) so I used my spare and at first it still did not start. I turned the key as far as it would go and I held it there for about 5 seconds (maybe more) nothing happened, no sound, nothing. I tried to start it 1 last time and it started right up, like nothing had happened at all. When I take it the service station, they run the diagnostics but can't find anything. Last time they did say that the batter was a little low. Any ideas? Replies to this message: teamo1 (Jan 11, 2008 1:38 pm) colt3 (Apr 13, 2008 10:49 am)
#25 of 586 JGC Idle and Stall Problems by bdutton Sep 19, 2007 (6:39 am)
#26 of 586 1996 JGC...idles rough and stalls while stopped...HELP by bdutton Aug 29, 2006 (11:29 am)
I have a 1996 4.0L JGC with 170K miles. In the morning when I crank, it sounds like it barely is staying on. The idle is very rough. When I put in drive, it "miss fires" for a second or two then takes off. At stop lights, etc. it will stall on me. What could be the problem? I've read on here, possibly IAC, fuel pump, spark plugs. I don't want a new car, just some reassured confidence. Thanks! Replies to this message: mullins87 (Sep 03, 2006 5:51 am) fwe (Nov 13, 2006 7:53 pm) fwe (Jan 02, 2007 6:25 pm) tkimage (Oct 01, 2006 11:51 am)
#27 of 586 Re: 1996 JGC...idles rough and stalls while stopped...HELP [bdutton] by mullins87 Sep 03, 2006 (5:51 am)
Replying to: bdutton (Aug 29, 2006 11:29 am) Does it smooth out the instant you depress the accelerator? Meaning, if you lightly rev the engine to 1,000rpms, does the engine run smoothly? If that's the case, then yes the IAC is a primary suspect. Does the check engine light come on? If so, what codes are being returned? You can take it to AutoZone and they will read the codes for you. If the problem ONLY happens at idle, then I would rule out the fuel pump and spark plugs, at least just from what you've told me. Replies to this message: fwe (Nov 13, 2006 7:53 pm) fwe (Jan 02, 2007 6:25 pm)
#28 of 586 Re: 1996 JGC...idles rough and stalls while stopped...HELP [bdutton] by tkimage Oct 01, 2006 (11:51 am)
Replying to: bdutton (Aug 29, 2006 11:29 am) My dad has a 94 5.2 V8 JGC that did the exact same thing. It turned out that his EGR valve was bad, rather, the plastic valve was melted completely. Dramatic results!!
#29 of 586 1996 JGC hard-start & stalls while driving by sarwarrior Nov 08, 2006 (4:09 pm)
I've replaced the fuel filter; fuel pump; crankshaft position sensor; camshaft position sensor and PCM with zero luck. The check engine light went out after replacing all of the above, the camshaft position sensor was last, and all error codes cleared, however, it is still hard to start and stalls. I've taken it to two different mechanics & spent too much ca$h with no solution. ANY SUGGESTION(S) IS GREATLY APPRECEATED. Next post will be "JGC FOR SALE....CHEAP!!!!" Replies to this message: xscout (Nov 09, 2006 12:33 pm) xscout (Nov 10, 2006 12:13 pm) fwe (Nov 13, 2006 7:50 pm) papen (Oct 23, 2007 4:20 pm) eric784254 (Jun 16, 2009 10:59 am)
#30 of 586 Re: 1996 JGC hard-start & stalls while driving [sarwarrior] by xscout Nov 09, 2006 (12:33 pm)
Replying to: sarwarrior (Nov 08, 2006 4:09 pm) I didn't see a response to the question about if the engine smooths out under acceleration. A vacuum leak will cause stalling and rough running, but not when you are giving it the gas. Replies to this message: xscout (Nov 10, 2006 12:13 pm) fwe (Nov 13, 2006 7:50 pm) papen (Oct 23, 2007 4:20 pm)

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