Posted on 10/16/2013 9:22:15 PM PDT by Anti-Christ is Hillary
Ok I know we don't have a lot of car questions here but my husband can't figure it out and there is not a lot that he can't figure out. I have a 2000 Jeep Wrangler Sport. For the last few weeks it has been dieing its like it just turns off. I'll be traveling down the street or on the freeway and everything is fine and all of the sudden it just dies. He thought that it was the fuel pump and changed that and now he is thinking that it is something in the electrical system. Does anyone have any ideas? He put a code reader on it and got no codes back.
Thanks for any help.
Nikki
O2 sensor...
I had a Chevy Truck do the same thing, turned out it was the “HEI Module” that some moron replaced before I owned it and they used grease gun grease below it when they should have used special di-electric grease.
My brother fixed for me and spent 2 hours explaining why it broke which is why I remember this thing..
if its fuel delivery, and you have replaced the fuel pump, replace the fuel pump relay - inexpensive part and a diy job
He mentioned that earlier tonight.
Fuel injected? Main computer for the vehicle.
Did he change the fuel filter too?
He replaced the relay yesterday and it still died today at a stop light but it generally starts right back up.
My 1991 Wrangler had a similar problem. Turned out to be a bad crank shaft position sensor. Both the camshaft position sensor (stator) and the CSPS must send the computer compatible signals or else the plugs won’t fire.
Either that or your positive battery cable is bad!
Had this problem with a 2006 Grand Cherokee at 65,000 miles. It threw no codes. Dealer cleaned the fuel system and replaced the fuel injectors. Problem has not repeated. It is a 5.7 liter Hemi. Hope this helps.
Dealer also replaced the fuel filter.
Its an automatic so I would say yes. (LOL I know that I just sounded like a stupid girl) He plugged the code reader into the car under the steering wheel and it showed nothing.
Yes it was on the bottom of the fuel pump
I would check the gas cap on the vehicle.I have driven a vehicle that did the same thing and I was advised to insure that the gas cap is tight,especially with a fuel injected vehicle.
Doing the above is the best place to start.Otherwise it could be an electrical issue and those are hard to detect and expensive to repair.
Crank sensor if there are no codes. Common problem on Chrysler products of that vintage.
I don’t know if it has one but check the crank position switch. If it does have one, replace the little ba$&2rd and be done with it.
It may be the computer that controls the fuel injection.
Mass Air Flow Valve. It fails after 80-100K miles. The O2 sensor would give you incomplete combustion. The MAF would kill the car dead in an intersection.
It’s basically a sensor in a tube on top of your engine. It can be expensive, at least it was on my german car. Likely cheaper for an American truck.
Get it fixed or you’ll die in traffic. It’ll cut off anywhere- 4 way stops, train tracks, highways- it is random.
The second thing I would look at is a slow drain if your alternator is failing and can’t keep the car spark plugs sparking. Not probable, but you haven’t told me your life story, so it’s the second option. That’s it. Good luck.
Could it be the gas you buy? We have a Murphy station that opened here a few years ago.* Cheapest gas in town. My car died twice, oddly enough heading to their pumps. Car was fairly new and so was the gas station. After only filling up twice there, I went across the street to the old reliable Shell station and only bought my gas there. Never had another problem since.
Do some research and find out which wire bundles do what (fuel injection, ignition, etc ). Start engine and let it warm up. Move bundles slightly at various places while it’s running. Stay clear of hot spots, fans, and coil wires.
Run through any high puddles lately? Are squirrels in the area?
* Was always told that it’s always the best gas at a new station. The pumps are newly calibrated and water build up has been purged and isn’t in the tanks. Not in this case.
wonder if cleaning it would help. crc makes a maf sensor cleaner that is supposed to be safe.
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