Thread: TPS wayyyy off

well after my bluebird swap, everything appears to be fine except for idle being a bit rough, and the throttle cuts out at 1k-2.5k RPMS. other than that the car pulls hard from 3k all the way through.

I have checked my TPS and there appears to be a problem. I am getting 0.05 V closed and about 1V WOT. I am getting the same readings checking from the ECU. Anyone know why I would have such low TPS readings? i have cleaned the connector and sensor. I have tried another ECU, with the same results, and i have tried another TPS from an auto ga16de, with the same results.

anyone have any ideas? thanks

check your voltage coming in, you might have a bad connection going to the ecu.

Are you referring to the supply voltage which should be 5V? i think i checked that, and it was really low as well. If so, should i re-wire one to the ecu? (to PIN 49 i believe on obd2). What else may cause that low supply voltage?

bad or frayed wire, check your pin at the connector and at the ecu. the wire in the engine bay harness might have been rubbing on something and frayed it. check it over and if you can try and follow it down the harness to check it. best way to do it in my opinion

Oh and best way to make sure is disconnect the connector and turn the key on and check it that way for the 5v if its still low you know you have a problem.

thanks a bunch, i'm gonna go out right now and hopefully get my car running better