Question about 1995 GMC Sierra
You will need to look at the signal with a meter or scanner. Specs at Idle should be around 1v but always check your application to be sure. As you spin the throttle the voltage should be to where you can get every number just about till you get to about 4.5v at wide open The engine does not need to be on but the key has to be on. if you have any dropouts you could feel that while driving. Computer thinks your foot is off the gas and stops reduces fueling.
Posted on Nov 14, 2009
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Posted on Jan 02, 2017
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Sep 02, 2017 | Cars & Trucks
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TPS not mounted securely.
TPS circuit short to ground or another wire.
Damaged computer (PCM).
to fix this code you can try this:
Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary
Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary.
If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics.
If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it's not rubbing on anything, grounding, etc. The code may come back.
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Jul 20, 2011 | Chevrolet Avalanche Cars & Trucks
1) Maladjusted TPS
2) Defective TPS
3) No +5 volt reference to TPS
4) TPS-return to ECM is shorted to ground or to sensor ground
5) Defective ECM
Good luck, i hope this helps.
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