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How to locate & test... 700 1989

posted by  someone claiming to be Ryan M. on  Fri Dec 1 04:29 CST 2000 [RELATED]

With socket 2 fault codes 121 & 232, I'm trying to diagnose the problem that's causing high idle (avg 1500rpm), throttle touchiness, atrocious fuel mileage, and occasional power cut-outs, like I'm running out of gas on my 187k mile brick.

I've checked the AMM, and it seems to be okay, dropping the idle to a rough 750rpm when disconnected while the car's running. Others have suggested I test other sensors, but I'm not sure where they are or how to test them. Like...

Oxygen sensor? somewhere in the catlytic converter maybe? how to test?

RPM sensor? on the bell housing...how to test?

I will also pull the injectors to test and clean them, per the 700/900 FAQ. Anything to watch out for while doing this, besides the obvious open-air fuel concerns?

Any other suspect areas? Thanks for any input.





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