2000 GMC Jimmy throttle position sensor

2000 GMC JIMMY
74,000 MILES • 6 CYL • 4WD • AUTOMATIC
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SCOOTER7205
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  • 2 POSTS
replaced throttle position sensor and my check engine light comes on goes off, comes on goes off
Jun 3, 2009 at 6:14 AM
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2CARPRO JACK
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What code is in the PCM? You need to have it scanned to see where to start
Jun 3, 2009 at 7:44 AM
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SCOOTER7205
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ihave had the vehicle scanned a couple of times and it comes up code 121 which i was told was the tps sensor in which i just replaced.
Jun 3, 2009 at 7:47 AM
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2CARPRO JACK
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 11,533 POSTS
At minimum you will need a meter to diagnose this or a scan tool.One of the threee wires is a 5 volt reference.One of theother wires should have around .5 volts at idle and it should increase to 5 volts at full throttle.If the minumum idle (idle screw) has been adjusted ori f it is having idling issues (IAC- Idle Air Control) it can also set a TPS code
Jun 3, 2009 at 9:55 AM