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Re: 89 buick needs big help?
I dont remember if the 3.3 TPS is adjustable or not--some of these had slotted mounting holes in the sensor and would be able to rotate about 15 degrees. If you cant get anything out of the datastream, you would at least have to invest in a cheap multimeter and backprobe the sensor to check for the proper signals. You have a 5 volt feed (usually an OJ wire), a sensor ground (Black or Black with a white tracer), and a signal out.
with sensor unplugged, test between signal and ground for 5v
with sensor plugged in, backprobe bewteen ground and sig-out and slowly open the throttle and watch for an increase in voltage. I'm guessing between .7v closed throttle up to 4.5v WOT.
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