1998 Jimmy Engine DIes

Oct 07, 2004 3 Replies
R

Any advice is appreciated.



I have a 98 Jimmy SLE A/T. Driving at 30 - 35 mph it will be running perfectly and then the engine will start coughing like a miss or lack of fuel.



Sometimes the engine will die. It starts immediately with the key.



This also happened about 15,000 miles ago but at higher speeds like 60 - 70 mph.



It does not set any codes for the mechanic to check.



At that time I changes plugs, plug wires, distributor cap and rotor. Also changed fuel and air filters.



Problem seemed to go away. Now it's back again.



When the problem is NOT happening the engine and trans run perfectly. ANY IDEAS??


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"

Corroded battery cables or loose block ground.

Doc

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R

Distributor pickup,

Or if DIS equipped, Crank Position Sensor might be a good place to look at.

I hope this helps?

Refinish King

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A

My wifes 1998 jimmy was doing something similar. Turned out that the in-tank fuel sending unit/pump was shutting down intermittently. I didn't realize this until I listened to the pump running while the car was in park/idling and the pump just shut off. A few seconds later, the engine died. After sitting a few minutes, it would start right back up. After replacing the unit bought on Ebay Motors (AC Delco part number MU85) for $150, no problems since. Hope this helps. Andy

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