PLEASE HELP!! Jeep stalling?

[weibs75]

I need major help. I have a 93 grand cher with 194,000 miles on it. I have never had a problem until now. When driving the jeep sometimes it stalls and then starts back up again and you keep driving. Or othertimes it stalls when you are stopped and you need to start it back up. I had it at 2 dealerships but they can not find anything wrong because it is an intermittent problem and never happens when they have it. Did anyone else ever have this problem??IT IS DRIVING ME CRAZY!!!!!!!!

[rjd]

From reading other web sites. On stalling issues, the crank sensor was mentioned quite often.

[TedM]

Same problem, here. I have been through the wringer with this old gal (93 Cherokee 4.0 with 250,000 miles).

I've replaced the Crank Sensor, the Cam Sensor, Timing chain, coil, wires/plugs/rotor & cap and the ECM (computer)! Still a problem. I suspect a wiring problem as I have already had to fix the junction where the injectors tie together with the lead from the ECM. Took me two months of afternoon and weekend probing with a VOM to finally find it!

Anyway, if anyone has a quick fix or a sure fire diagnostic approach, I'm all ears!

[knightrider4x4]

Your Jeep is Possesed!

[John Tucker]

Have a 95 Jeep Grand Cherokee Limited - have had stalling problems for nearly four years - have been to the dealer numerous times, and to a private car repair shop. No solution by anyone. Called Jeep 800 number, was told it is electrical or fuel problem, they have no record of complaints . . hmmm! Have heard of too many people having the same stalling problem to believe that, but if anyone has any idaes for solutions we would certianly appreciate your posting.

[ugly kid jon]

RJD is right, it could be a crank sensor, but check the main rellay and the fuel pump rellay, these are parts that last 5-10 years. also if any of you are mechanically inclined you could carry a fuel pressure gauge in the jeep, so when it stalls you could have a lead to go on, and also check for spark when it stalls, and we can go from there...good luck.

[spooleffect]

I bet you $100 that the problem is related to a bad ground or some wiring prob in the car. People spend SOOOO much money on sensors that dont need to be replaced, all because something simple like the terminals on the battery or ground connections are dirty.

BTW- if you have had a bunch of things replaced and it didnt fix the prob the you have been ripped by a shitty mechanic. Simple tests would tell you if the sensor was faulty, not by paying to replace it.

[Catkinson]

I also have a 95 jeep gr chk limited with about 120,000 on it. i have had it stall on me repeatedly two years ago. I took it to the dealership and got the crank sensor replaced. Worked great for two years. Well two weeks ago, the problem comes back. it stalls on me some more and i get it checked out. its the crank sensor again so in two years i had to replace this sensor. something is not right. well just yesterday problem comes back. i have some thoughts on the subject from my experience. The way my car has been acting is like this.......I can turn on the car in the driveway just fine. i can make it through the first stop sign just fine but once i get that engine running higher rpms say around 2500, the minute i let off the gas to brake or the minute i come to a stoplight, the car quits. I can turn it on again but it will just stall out again. The way i have remedied the situation for now is by turning on the car and revving the engine at a contstant for about a minute and slowly letting my foot off the gas. the second i let the foot off the rpm's dip down to about 200 or so just about to stall and it will jump up to about 600 or so where it is supposed to idle. once i get to that point, my car works fine until i leave it off for longer than about 6 hours. i agree with the last post. i do not believe that whole problem is the crank sensor. i believe that there could possibly be a small electrical connection problem of some kind. I plan to take it in to a trusted mechanic and family friend this week to see if he can give me some ideas without having to start throwing parts at it. Here is another hint for those of you who say they can't get the problem to work at the dealership. drive very cautious to the dealership and do not speed or rev the engine in any way. Once at the dealership throw it in park rev the engine to about 2500 and then take your foot off of the gas quickly. The car should stall out....at least thats the way mine works. If anyone else has this problem and has found a fix then email me. i appreciate it.

[tdenkler]

To all. Does prob get progressively worse? If so, change ign coil. I have to change @ every 1-2 years. I've been told spark output on these engines is so hot, it's hard on replacement coils(i'm too cheap to buy perfoemance coil)

[Reeves5878]

My grilfriends 97 grand cherokee had the same problem. It turned out to be an electrical short. The problem was where the wires come out of the computer on the passenger side. These wires rubbed on the A/C lines and wore away the coating. We took it to four shops and noone could find this. Once we found the problem I put some caulk (sp) around the broke part. This kept the mosture out and made the computer stop flipping out.

[Catkinson]

My idle air control mtr was replaced along with my pcv valve and my jeep has been working perfectly. No close calls, also there is no more jumping of my RPM needle. it doesn't idle as rough and i am happy......so far. If i do not respond to this post again then you will know what was done to fix my problem. good luck to everyone.

[DIY Mechanic]

The engine needs Air, Spark and Fuel to run.

There are a number of things to look at.
With that many miles;

Pull the dipstick out and check the oil to make sure it is not brown or has water in it.
This is to make sure your head gasket is not leaking coolant into the cylinders.

Check the Air Filter to make sure it is clean.

Next are the spark plugs. Make sure they are not over 65,000 miles old. Despite the great improvements in electronic ignition, spark plugs between 60,000 and 100,000 are pushing the limit.

And finally what I really think the problem is … look at the distributor cap and rotor.
I changed mine at 100,000 miles when the gas mileage started to drop. I was very surprised to see the extremely poor condition. I thought that the electronic ignition would not be as harsh as a points system but there was burning on the rotor tip and heavy gray carbon buildup on the distributor cap posts.

Another thing may be water in the fuel. I would not suspect the fuel filter since I have been disassembling fuel filters for 8 years now and I have yet to find anything in them. Not one speck of dirt. I now rarely change fuel filters unless there is a fuel pump replacement or the gas tank is suspected or is known to have water in it.

[hammmy]

See my post for info and solution with a similar problem--http://www.automotiveforums.com/vbulletin/showthread.php?t=150308.

Looks like Catkinson has it right, too.

[belkt]

we have had the same problem, jeep starts ok and runs for about 20 to 30 minutes then cuts out, it takes about 2 minutes to restart then cuts out every five minutes after that (very frustrating and dangerous). It went to an Auto Electrician who replaced the coils, all the censors, and it still had the problem. They sent it to a Jeep specialists who said it might be the computer, they used another computer but different year to ours and it still had the same problem, they said there were no computers in New Zealand and that we needed to get one from Japan (just great, we really didn't need this). We finally went to a third person who apparently specialised in vehicle computers...we had been without our Jeep for about 5-6 weeks and it only took this third and last crowd 2 days to fix the fault. Hope this helps, it surely would of helped us in the first place if we had known about this crowd. Their website is www.ecu.co.nz.

[suaige]

Originally Posted by weibs75

I need major help. I have a 93 grand cher with 194,000 miles on it. I have never had a problem until now. When driving the jeep sometimes it stalls and then starts back up again and you keep driving. Or othertimes it stalls when you are stopped and you need to start it back up. I had it at 2 dealerships but they can not find anything wrong because it is an intermittent problem and never happens when they have it. Did anyone else ever have this problem??IT IS DRIVING ME CRAZY!!!!!!!!

There is a fuse box under the hood of the 93 Cherokee - The problem will be a yellow small 20 amp fuse (you will know this by removing with engine run and it stalls and fails to restart) - this disables the vehicles ignition control module preventing the vehicle from starting or continuing to run - over the years this fuse can become corroded because it is outside the vehicle and loose, thus the sparactic stalling in motion - the dealer will replace sensors cause they appear to be old and cost you money, but they fail to mention as a safety they will disalble the battery and sometimes remove the fuse and in most cases replace it with a fresh one without thinking that this was probably the problem - clean all your fuse connections outside the vehicle. Try this before spending a lot of cash.