95 Grand Cherokee Laredo shuts off while driving it on the road. HELP!

Hey, I have a 1995 Jeep Grand Cherokee Laredo. It seems to have a tendency to want to shut off on me when i am traveling down the road. Mostly on rainy days or warmer days especially. All of a sudden the engine just like cuts out and leaves me sitting. and then it doesn't want to start up, but after about 30 minutes or so, it fires right up. I know it has to be a relay or fuse, so could someone tell me what is wrong with it? Thanks Alot.

Hey, I have a 1995 Jeep Grand Cherokee Laredo. It seems to have a tendency to want to shut off on me when i am traveling down the road. Mostly on rainy days or warmer days especially. All of a sudden the Engine just like cuts out and leaves me sitting. and then it doenst want to start up, but after about 30 minutes or so, it fires right up. I know it has to bea relay or fuse, so could someone tell me what is wrong with it? Thanks Alot. HI IF YOU EMAIL ME , I"LL SEND YOU A ARTICLE ON RETEIVING THE TROUBLE CODES OF HAND I WOULD CHECK OUT THE CRANKSHAFT POSITION SENSOR IT CONTROLS THE TIMING & SPARK TO THE DISTRIBUTOR THE ARTICLE GIVES ALL THE CODES & WHAT THEY ARE ANDHOW TO CHECK THEM EMAIL DIRECTLY AT jeepman600@aol.com I CAN"T EMAIL THEM THRU THE FORUMN THEY ARE IN MY FILES DALE

Check your fuel pump

I have a 96 Grand Cherokee and i had the same problem as you are having, i took it to the shop and they changed the CrackShaft Sensor, some plate in the distributer and some other crap i can't remember, but when i picked up the car it was still shuting down on me, so i took it back and they found out it was some loose wires in the computer, they took it off and took it to some other place and they fixed it and the car ran great after that, i am currently having another problem with the car shutting down on me, but i think it's something with the fuel, another shop checked out the fuel pump and said it's good, but i'm stumped from here and am going to take it to a Jeep dealership to put it under the computer to get a thourough report on the car. I would recommend you figure out the specific problem or you could spend alot of money on parts you never needed to change. Please post back with anything you did to the car to fix the problems, thnxs and gl.

My 97 was doing the same thing, and I took it in to have the fuel pump replaced. Then took it back 3 days later because they put in a faulty Fuel pump. For a while there Jeep was making fuel pumps that wheren't keeping any pressure in the lines.

Well I know it cant be anything with the fuel because i have changed about everything u can with the fuel, and I have checked the fuel pressure and it is really good, so i know the engine is getting fuel, but i cant narrow it down anymore. thanks.


have you checked the o2 sensor? I also had simmillar problems when my 02 sensor went south.

Has to be electrical like mines had then, and if it's while your driving it's something that's moving around and causing a short somewhere, mines happened to be in the computer inside the car and not around the motor. Forget the fuel and check electrical now, maybe go to a shop that works on the electrical problems on a car and they can figure whats the problem, gl

Has to be electrical like mines had then, and if it's while your driving it's something that's moving around and causing a short somewhere, mines happened to be in the computer inside the car and not around the motor. Forget the fuel and check electrical now, maybe go to a shop that works on the electrical problems on a car and they can figure whats the problem, gl
WHY DOES EVERYTHING HAVE TO BE THE COMPUTER, ALL THEY NEED TO RUN IS GAS & SPARK. EVERY TIME THEY STOP THE FIRST THING IS ( COMPUTER ) NOT!!!! DALE jeepman600@aol.com

Next time it cuts out, check if there is any spark at the plug wires. If a coil is overheating, it will cease to put out a spark. After it cools, it will work again. There may be some signs of leakage around the coil. Coils are oil-filled for cooling. If the oil has leaked out they will overheat. These are some classic symptoms.

John

WHY DOES EVERYTHING HAVE TO BE THE COMPUTER, ALL THEY NEED TO RUN IS GAS & SPARK. EVERY TIME THEY STOP THE FIRST THING IS ( COMPUTER ) NOT!!!! DALE jeepman600@aol.com


Well obviously if he checked everything with the fuel system, then the next logical choice would be some sort of electrical problem causing a short somewhere and shutting the car off, my reply was to have the electrical system checked not completly the computer.

Also, do you have a problem with people giving some advise on a problem they have or something?

try the ignition switch, after fooling around for 3 month I finally got it. part cost $60

Well obviously if he checked everything with the fuel system, then the next logical choice would be some sort of electrical problem causing a short somewhere and shutting the car off, my reply was to have the electrical system checked not completly the computer.

Also, do you have a problem with people giving some advise on a problem they have or something?
I DON'T HAVE A PROBLEM WITH GIVING ANYONE ADVICE.I THINK I GIVE DECENT ADVICE & I DON'T HAVE ANY PROBLEM SAYING WHAT I WANT
DALE jeepman600@aol.com

I got the crankshaft positon sensor changed and something in the distributer was melted , but they changed that.

And they drove it around for a while and it didnt shut off on them , but when i drove it around it was good, until i turned it off. Then it wouldnt want to start again, after 2 minutes it fired back up. So i dont know what to do now, i am running out of options!

JUST A NOTE TO SEE IF FOUND THE TROUBLE WITH YOUR JEEP. YOU COULD HAVE A COIL GOING BAD. DID YOU CHANGE THE CRANKSHAFT SENSOR & THE CAMSHAFT SENSOR. DALE
jeepman600@aol.com

Hey, i found out the problem. Here the ECM or the computer known to most people as, had gone bad. They needed to special order a new one from California. It cost $355 so i wasnt happy about that. Here's what i all changed. The Coil. Rotor, Distributor, spark plugs, spark plug wires, coil. Crankshaft Position Sensor (twice), and the ECM. Well if you have any problems, just email me at philliesfan06@msn.com

I,ve had many with the described condition first thing i can think of is the crank position sensor is getting hot and going open without crank signal you wont have any spark,,,, nostart, no ruun.

The perils of car repair :)

The Camshaft sensor is the one lacated under the Distributor Cap, Crank Snesor is located in the Tranny Bell housing.

wooops n/m didn't c this page......lol

When I'm driving, my vehicle's rpm's drop all the way to zero for a second then the rpm's either come back or the vehicle shuts off--all interior & exterior lights stay on. Over the last 2 weeks, I've had a full complete tune-up, O2 sensor, catalytic converter, rotor, distributor, fuel & air filter all replaced, & a computer diagnostic that revealed no codes. Fuel pump checked out OK.

Should I go ahead and replace the computer 1st and then the crank & camshaft sensors?

well doubt it's the Cam position sensor, if it was this the Jeep wouldn't start at all. but it could possibly be the Crank Sensor. don't replace the Computer yet. email me I will give u some possible things to check Joe dksob81@hotmail.com

Ive had both Crank and Can sensors do the same thing. I had a ecm on a Calvalier go bad and it acted the same. Dont know how to check for a bad ECM except eliminate other possibles.

try this, unplug the camshaft sensors (under Distributor Cap) and try to start it, I don't know if this is correct for jeeps, tho.

if it starts then it is the Camshaft Position Sensor.
If it does not then it may not be. this test is only accurate on a failed Cam Sensor.

WHAT HAPPENS: there is a magnet that the Cam Sensor pick up and sometimes it becomes dislodged and the cam doesn't pick it up, but if u unplug it the PCM with go to Defualt mode, allowing it to start.
I am not possitive this will work on your jeep or any jeep in that matter, but it's worth a try.

I know it shouldn't start at all on jeeps, but it works on other earlier vehicles NONE JEEP. Thanks Dale

I found that any advice , good or bad ... given here invariably leads you to something you havnt thought of in fixing any problem...personally , when i GOT MY 94 gc, 110,000 miles ..I changed everything I could on it and kept the old parts for spares ..this is still the best place on the web for GC advice

I do agree, some of the problems u run into Mechanics just don't know what it could be. so u need someone with personal expierience to help u and since this particular forum is just for GC it is deffinately the best place to look. no matter what the problem is someone else has prolly had the same problem.