Help! Sputtering/hesitation in gas

Tiny
SOPHI
  • MEMBER
  • JEEP CHEROKEE
98 Jeep Cherokee Classic, 88000 miles, 4 L.

We've been having this problem for a while, and our mechanic has not been helpful. After starting the car, as you start to drive it, especially out of a stop sign, the car hesitates and sputters. It feels like as you press on the gas, it doesnt give a constant stream of gas into engine, and the car kinda jerks around. This tends to only happen when the engine has not warmed up all the way, so we've been letting it idle for a minute or two before driving, but it still sputters. Also, after we bring it home from the mechanic the problem comes back and deteriorates over time.

The mechanic we've gone to has no idea. We've had the distributor cap replaced and the O2 sensor replaced. We've had the computer checked and the fuel pump checked, and those seem in working order.

Help!
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Wednesday, July 11th, 2007 AT 11:13 AM

3 Replies

Tiny
SOPHI
  • MEMBER
Actually instead of the O2 sensor, we had the crankshaft position sensor replaced.
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Wednesday, July 11th, 2007 AT 1:16 PM
Tiny
POSONOMA
  • MEMBER
Im having the same problem with my truck. Im glad I found someone else with this problem as it seems it is pretty rare. My mechanic doesn't know what it is either. I just reset my ECM, the sputter is still there but not as bad. Also check your spark plugs and injectors. Ive also been told it could be a MAF sensor. Not too sure though :(
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Wednesday, July 11th, 2007 AT 7:45 PM
Tiny
GBGTEXAS
  • MEMBER
Try the EGR valve. Sounds as though it may not be functioning properly.
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Saturday, July 14th, 2007 AT 10:20 PM

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