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Stumbling problem continues - Need BB's help! Trying to keep my sanity here.... 200 1990

posted by  jwalker on  Wed Jun 11 02:05 CST 2003
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last visit: Fri Jun 6 08:39 CST 2014
[RELATED]


BB's,

My stumbling/hesitation problem on acceleration continues...

Quick problem summation: Car has been stumbling on acceleration for a month or two now. Started hesitating a couple of times during heavy rain only, then began doing it all the time. Starts and idles fine.

Work done: Checked for vacuum leaks. Checked AMM connection, cleaned bellows and IAC hoses. Cleaned and replaced flame trap. Replaced plugs, cap, rotor, air filter about 15K ago. Recently replaced wires, fuel filter, FPR. Last night I replaced pre-pump and sending unit (rusted-out).

I don't have any test equipment so I have been forced to take the replace parts approach. Might be forced to go to a mechanic soon if I can't fix.

Could this be a bad knock or oxygen sensor? Going to check those next.

Any other thoughts folks??

Thanks all,
Jim






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