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1991 240 Rough idle, stalls, no power on acceleration. 200 1991

posted by  Makoona on  Tue Aug 4 04:55 CST 2009
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last visit: Thu Aug 5 09:35 CST 2010
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ok. I think I may have multiple things going on. These problems are intermittent. Occasional rough idle and will stall sometimes. Other times idle is ok and doesn't stall. While driving, will loose power with partial acceleration, and I have to mash the throttle to get power back. I get two codes: Jetronic LH2.4 code 2-2-3 (fault in signal for air control valve). and EZ-116K code 2-1-4 (speed sender signal missing or sender faulty)

Also, I noticed one the power was robbed right after a hard right turn.. but this could be coincidental. I'm thinking of checking the in tank pre-pump, the fuel pump relays/fuses, the air control valve (can it be cleaned?), and the wire described below.

I noticed that there's a wire that seems to come up from the flywheel area, I think this might be the speed sender wire. some of the insulation has come off of this wire and it's showing a blue cellophane like material as well as what looks like aluminum foil shielding. (I DO NOT have the older car that had all the disintegrating wire harness problem, that wire is the only one that has issues). Any ideas welcome, thanks.

--
1991 white 240 auto






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