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#858 of 1240 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything.
Sep 02, 2011 (7:58 pm)
Ok, see if someone can figure this out because everyone I know is stumped. I've asked a few mechanics and parts store personal and no one knows.
First I need to explain the problem. After driving for so long, say 25-30 miles, it starts to act up as if it was running out of fuel. Backfiring, cutting out, loss of horse power ect... It does it whether you try giving it a little gas or the whole petal. But it only does it after being driven for awhile and its hot outside. When the temperature outside cools off and during the winter it doesn't act up at all. When it's not acting up it runs great and no problems. Sometimes I can put it in neutral and turn key off and back on and it fixes for a short time. Other times I have to actually pull over and turn the jeep off and let it sit for approx 10 mins and it's back to normal again for a short time. It's not showing any warning lights inside of any kind. There are no vacuum leaks that have been found after several times looking and listening. My theory is something is getting too hot I just can't figure out what. If someone could please help me I would for ever be grateful.
This is a list of things I have tried so far:
Pick up coil
Fuel pump relay
Crank shaft position sensor
The air filter is new as well and gets regular oil changes.
Also I have tried cleaning intake and has had prob. 6-8 bottles of either Seafoam or Lucas fuel treatment since problem began.
#859 of 1240 2002 Jeep Grand Cherokee laredo
Sep 10, 2011 (6:44 am)
Recently I have been having a big problem with my jeep. Everynow and then when im driving I lose all power and I pull over and sometimes it cranks back on and sometimes i have to wait a little bit. Well, the check engine light came on and it said it was an emissions evap control leak large and small, we found a leak by the air cleaner and got that taken care of. However, it still is doing that. Our one buddy whose a mechanic said that back by the gas tank it sounds like a leak, the leak sounds like what a propane tank leak would sound like. He said it is not supposed to make that sound...Any ideas what it could be? The hoses are all connected...
#860 of 1240 2002 jeep grand cherokee laredo
Sep 10, 2011 (6:46 am)
My trobles sound like swelms! Help, Please!!
#861 of 1240 Re: 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything. [swelms]
Sep 10, 2011 (1:20 pm)
We have a 2004 Jeep Grand Cherokee Special Editon that does the same thing. Like you, we have replaced almost everything under the hood. Today we replaced the fuel pump and then test drove it and barely made it home because it is still doing the same thing. If you find the problem please let me know it will help a lot.
#862 of 1240 Re: 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything. [swelms]
Sep 10, 2011 (5:49 pm)
I will tell you that I am facing the same frustration. Bought it used for my daughter to use as it has 170K miles. Instantly changed the oil, fuel filter, air filter, new exhaust and head gasket ($1K at a shop). Car ran fine for about 1 week then I replaced the following due to a missing (bucking, loss of power)issue when rolling down the highway:
new wires, plugs, dist. cap, rotor, ignition coil ($100 total, I did the work)
Took it to an independent shop, they pulled a code for Crankshaft positioning sensor. Replaced and cost me $340!
Within 2 days, car just dies/stall/shutsdown. Sometimes restarts right away, sometimes it doesn't. I then replaced the idle air control valve, which was heavily carbonized...still did the same thing. I replaced the TPS, still does the same thing. Replaced the MAP sensor, still does the same thng but seems to be getting worse as I can barely go a tenth of a mile before it just dies. Another $130 spent on those parts.
My last recourse is to replace the PCM for about $200. After that i guess I go back to a shop because I can't do anymore on my own and will have exhausted all options.
I will let you know if this works once I get the part in the next few days and put it in...all the work I did was really quite simple but it adds up...and I feel no closer to resolution.
Best of luck to you all and hopefully one of us finds a magic bullet.
#863 of 1240 Re: 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything. [swelms]
Sep 11, 2011 (1:46 am)
hi, and good luck with your jeep. i have been through every issue and replaced every part you guy's mention. my continuing issue is the ignition coil. it will die just like turning the key off. i have come to the point that i carry a spark tester (about 10.00 at autozone ) when this happen's i raise the hood and check the spark coming from the coil to the distributer and wala it will start with the tester on it. i have gone through 5 count them five ignition coil's in 18 month's. i suggest you buy a ignition coil from a part's house and get the one with a lifetime warrenty as i have got 4 free from my local part's house and the coil will go a couple of month's with no issue's and all of a sudden another coil is needed. i'm not sure this is your problem or not however i do know the crank position sensor will not tolirate any oil not even a film. alway's remember when testing the spark at the coil a yellow spark is the same as no spark. it has to be blue. good luck with your jeep. i drive a 1993 grand cherokee with the 5.2 V-8 and get 22 mpg. i love the jeep even with the annoying electrical issues.
#864 of 1240 Re: 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything. [swelms]
Sep 12, 2011 (12:24 pm)
Okay, we have a 2004 Jeep Grand Cherokee 4.0 inline 6 and we had the same problems. After spending a lot of money on sensors, fuel pump and many other things we decied to start it up and wiggle some wires around too see if it could be a wiring problem. We found a wire in a wireharness that runs along the engine by the fuel injectors. At the end of the bar wires coming out there is a wire that goes to oxygen sensor and it was pinched. After fixing the wire and it has not given us any problems
#866 of 1240 Re: 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything. [scoutyjones2]
Sep 14, 2011 (1:01 pm)
your problem sounds like mine to a t.any luck with the pcm? thanks
#867 of 1240 Re: 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything. [rattlehound]
Sep 15, 2011 (7:45 pm)
still haven't purchased a PCM to swap. I will update once I do in the next few days...be it good or bad.