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2000 GMC Jimmy throttle position sensor

Tiny
SCOOTER7205
  • MEMBER
  • 2000 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 74,000 MILES
Replaced throttle position sensor and my check engine light comes on goes off, comes on goes off
Wednesday, June 3rd, 2009 AT 6:14 AM

3 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
What code is in the PCM? You need to have it scanned to see where to start
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Wednesday, June 3rd, 2009 AT 7:44 AM
Tiny
SCOOTER7205
  • MEMBER
  • 2 POSTS
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.
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Wednesday, June 3rd, 2009 AT 7:47 AM
Tiny
2CARPRO JACK
  • MECHANIC
  • 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
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Wednesday, June 3rd, 2009 AT 9:55 AM

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