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Forum namePerformance/Engine
Topic subjectthrottle position sensor
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=38935
38935, throttle position sensor
Posted by fulleclipse96, Dec-05-02 02:32 PM
How do I check to see that the tps is working correctly, I have now replaced the egr, coolant temp, isc motor, and speed sensor and I'm still getting the code for isc malfunction, so from what I know I'm down to the tps or the crankshaft sensor as being the only thing left that could be wrong.
38936, RE: throttle position sensor
Posted by MetalJim, Dec-05-02 06:14 PM


So, make sure 5v is getting to the sensor...then make sure it ranges from .4v to 3.8v output.


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38937, RE: throttle position sensor
Posted by mcgyvr, Dec-06-02 12:12 AM
Ok if your getting a code for ISC malfunction, then the ISC is your problem, when you replaced it did you reset its position using the DRB3 tool, if not thats your problem, you need to take it into the dealer and have them do the ISC (IAC) reset function in the DRB3 tool.

Its a stepper motor with a plunger and if you have moved is position anyway it will have no idea of its position in relation to being fully closed/open.

Are you getting a crappy idle?
38938, RE: throttle position sensor
Posted by fulleclipse96, Dec-06-02 03:18 AM
yes I have replaced the isc motor and had it reset at the dealer ship, that did not work it is still malfunctioning. They ran diagnostics on it and found nothing wrong, they said the next step would be to check the wiring and replace the throttle body. The wiring is good I checked it and I'm not sure why the throttle body would suddenly stop working correctly when it is in perfect working condition. so naturally if it doesn't work and i've replaced it than one of the sensor that would control it would be not working correctly.