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240 Hesitation/Surging/High Idle 200

posted by  Delkan Cott on  Mon Nov 9 04:27 CST 2009
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last visit: Mon Apr 26 08:14 CST 2010
[RELATED]

I am having similar problems with my 92 240. Lots of hesitation/surging at low speeds (coming out of first gear), especially under heavy acceleration. Also, idle seems very high (about 1200 rpms).

Already read some threads on here and replaced hose from AMM to TB, cleaned TB, replaced PCV with new kit, clean oil separator. Tried to clean AMM meter with Q-Tip but noticed that part of the little plastic sensor moves independently (perpendicular) to the rest of the sensor which seems fixed. Is that normal? Should I try swapping out the AMM?

Before all the changes, it had some hesitation/surging and high idle, but they seemed more sporadic.

Thank You,
Dan
1992 240 192k

Edit: Should mention fuel pump wine (not sure if it's internal or external pump) is very loud, would that have something to do with the poor air/fuel?

Also, Just started the car today, tried to rev engine because the car almost wouldn't start and although it revved, even with my foot on the pedal it would not hold RPMs.






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