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Problem Starting and Random Engine Cut-Outs

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Old Sep 7, 2011 | 09:30 PM
  #16  
XJ-nick's Avatar
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From: Richlands, NC/Charlotte, NC yeah I live in 2 places YUNVME?
Year: 1997
Model: Cherokee
Engine: 4.0 I6 H.O.
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Ok, so heres what I cancelled out today.
Plug wires tested good.
Reset the whole computer and ran it for a little according to Chrysler's proper procedures for resetting the comp.

Tested it under load (hold brake and push more throttle aka powerbraking) motor bogged down and when I took off it backfired slightly and sputterred a few times before straightening back out.

with the pedal on the floor it bogs the whole engine down but still picks up speed. HOWEVER if i only throttle up about 3/4 of the way, then I have full power and pick up.

Any suggestions now?
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Old Sep 7, 2011 | 09:31 PM
  #17  
FleXJ01's Avatar
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From: Chuluota
Year: 2001
Model: Cherokee
Engine: 4.0
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Mine was both of the o2s, I would drive and it would cut out like a fuel pump was broke and had to floor to keep going. Replaced all the senesors on throttle and trans- nothing, got new o2s, fixed it right up.
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