mikemrq

Have a 2001 Cavalier 4-Cyl. 2.2 Liter. Was driving to work and it felt like some hesitation now and then. Stopped at the light and pulled out then stalled. I started it up and was OK. Same thing on the way home. Engine light came on, put the scanner on and it said-TPS/A circuit low input. Would it be the TPS or can it be anything else?

J-Ri

It is most likely the TPS, although it could be in the wiring. To really check the TP sensor, you need a oscilliscope to check for glitches in the signal, a voltmeter will not catch them. So unless you have a scope, I'd probably just replace the sensor if there's no obvious damage to the wires.

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'04 Cavalier coupe M/T 2.2 Ecotec
Supercharged 14 PSI boost, charge air cooler, 42# injectors
Tuned with HP Tuners
Poly engine/trans/control arm bushings

When you buy something... a bottle of pop for example, who gets the profit from it and what do they do with it? Maybe your money's going to groups that want to hurt you. I think everyone should do a search for things they purchase regularly "____ supports". Might just find a company you won't buy stuff from anymore.