|11-20-2007, 04:52 PM||#1|
Join Date: Aug 2007
Location: Titusville Pennsylvania
Vehicle: 2000 Grand Am Gt Sedan
Alright this is getting kind of retarded. My engine light has been on for a while and it came up with the p0122 code so I had my tps changed. It was good for about a day, when the light came back on. I had it scanned again and it was reading the same damn code. So, today my mechanic and I pulled my car in hooked his diagnostics tool up to it and began testing terminals, etc, and the tps itself. Everything seems to be doing the right job even my idle air control and other sensors. But I still get a real high idle at times on starting my car. I can't even let the car warm up in the cold because it idles higher and higher as it sits. Later on, I'll start it and it'll run fine. My mechanic mentioned vacuum leak, but I didn't think it would be intermittent then, it would be all the time wouldn't it? It's getting ridiculous because he seems lost on the whole matter and he'd hate to charge me a ton of money to rip everything apart to look for something he's not sure of. Any help would be much appreciated. I'm scared one of these days I'm gonna rear end someone at a stoplight because it's hard to hold the car back with that idle sometimes. Thanks.
Live a little...
|11-20-2007, 05:16 PM||#2|
Im President Charley
The throttle position (TP) sensor circuit provides a voltage signal that changes relative to throttle blade angle. The signal voltage will vary from less than 1.0 volt at Closed Throttle to more than 4.0 volts at Wide Open Throttle (WOT). The powertrain control module (PCM) monitors the throttle position and compares the actual throttle position from the TP sensor to a predicted TP value that is calculated from the engine speed. If the PCM detects an excessively low TP sensor signal voltage, DTC P0122 will be set.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
Inspect for the following conditions:
Remove any debris from the connector surfaces before servicing a component. Inspect the connector gaskets when diagnosing or replacing a component. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion.
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Last edited by lvemy3100; 11-20-2007 at 05:22 PM.