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SUVs Jeep Cherokee and Jeep Grand Cherokee Jeep Cherokee Grand Cherokee Engine and Performance Problems
566 messages, Last post on Nov 16, 2009 at 9:41 PM
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Okay- first of all I'm new to this site but I am so happy to have found it and I'm hoping that you all could shed some light on an issue I'm having.... I've never had a moments problem with my 2006 Jeep GC until now. It's a Limited 5.7 Hemi with 78k and she's been really good to me but I'm getting a strange sort of sluggish shake (best I can describe it) when I am steady on the gas or push the accelerator for an incline. It comes and goes but seems to do it more in the 30 to 40 mph range. It also seems to have lost a little of it's get up and go. Had the plugs changed and it helped a little but it's still there. It's not throwing any codes other than a very random/occasional 'service 4x4 system'. Not sure if that's related to this issue or not. I've had my beloved mechanic (not a Jeep Dealer) look it over but he was at a loss. Anyone out there with similar issues or some advice before I break down and take it to a dealer? |
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Replying to: sanewcomb (May 28, 2009 2:25 pm) as far as the get up and go, with 78K miles it might not be a bad idea to get a fuel-injection service done. i have 144K on my '98 5.2L V8 and noticed a slight improvement afterwards (bumped me back up almost 1 mpg on the highway too). good luck!
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I have a 01' Jeep Grand Cherokee Laredo which I love but I think the thrill is leaving if not gone.  It was running fine until the other day. In the same day the transmission started sticking and would not shift until I ran up the RPM to about 45000. After that it would run fine until the next stop where I had to do it again. The cooling system seems to be at odds with as well, shortly after this episode our overflow for the coolant began to spit out coolant everywhere while we were in park. It looked as if a hose had come loose but it was all from the overflow. Since then our fan doesn't come on and we were only able to drive it without any more trouble if we kept it moving. If we stopped then without the use of the fan the engines temp would begin to rise. As of today, only two days later, the engine after startup, maybe a minute or two begins to overheat. This is becoming a huge thorn in my side. Are there any sujestions as to what may be causing these two problems? Thanks
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Replying to: trek87 (May 28, 2009 5:36 pm)
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Replying to: sanewcomb (May 29, 2009 5:33 am)  . i'm not an expert, but i still suspect it's a drivetrain issue, and it smells like it's still transmission-related. your transmission pump might also be bad, but it's hard to say without a road test. i highly recommend taking it to a trusted Jeep dealer (if you have one) or your trusted mechanic for a road test. an experienced Jeep mechanic can usually diagnose common issues quickly. the only other possibility that comes to mind is a throttle positioning sensor or vacuum seal, but i think that's a stretch. otherwise, someone else here may have some good advice for you. please do keep posting so the rest of us can benefit from your experience, and good luck. p.s. i love my V8, with 144K she runs like new and i still get 21 mpg on the highway, but i'm still jealous of your hemi ;P |
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Hello all, I am not mechanicly inclined. The jeeps check engine light stays on and my airbag light/chime goes off at random intervals. I will be driving along then ding ding ding then it goes off or sometimes just stays lit. Any help with this would be greatly appreciated. 
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Replying to: sanewcomb (May 28, 2009 2:25 pm)
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Hello...I am new to this group. I have a 2001 Jeep Cherokee 4.0 4X4. I just had the engine rebuilt by NAPA. The new engine is installed and connected. I started it up and it was idling rough. I noticed some vacuum leaks on the injectors so I replaced all of the O-Rings. That seemed to fix some of the problems. I checked the onboard computer and there are not error codes. The engine sounds great when you run in above 1000 RPM. It just when it idling is when it is rough. There are no air leaks. All of the sensors are connected. Before the engine died(before it was rebuilt) it ran and idles normally. Does anyone have an opinion?
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Replying to: yeats66 (Jun 01, 2009 2:02 pm) i would get a vac gage and see what the vac is at idle should tell if have vac leak |
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I have an 05 Jeep Grand Cherokee which intermittantly starts. The dealership just tells me they can't do anything until it is NOT working and, as life would have it, everytime they have it, it starts. I replaced the ignition switch and still have the problem. What do I replace next? What other parts could be the problem? I turn the switch and nothing happens. There is no sound, and the engine does not turn over. Thanks.
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