LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

help w/ spark/fuel problem

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Old Sep 27, 2006 | 05:19 PM
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From: Houston, TX
Re: help w/ spark/fuel problem

BTW in the case of the 122 code, the PCM will use a default sensor value. It will not apply the torque converter clutch and will drop out of fourth gear when the tranny is hot.
the car is a t-56 so I do not understand this one.

For the tps, the volts coming to the sensor are waaaay low for what they should be. The 5v reference reads like .06v and the .2-.9v at idle cables read like .02 at idle, and should go up to 4.2-4.9, and it goes up to .16 or so. Should I replace the sensor and see if that fixes it? Or is it definitly wiring (I dont see how it could be the sensor personally).
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