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1992 Chevy Suburban wont stay running when started

Tiny
D WILLIAMS
  • MEMBER
  • 1992 CHEVROLET SUBURBAN
I have to keep playing with the throttle to start it and keep it running. If I stop rocking the throttle back and forth it dies. IIt also keep backfiring through the throttle body sometimes. I changed the idle air control valve.
Wednesday, March 7th, 2012 AT 8:59 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure, idle air control valve, EGR valve, MAP and TPS sensors
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Wednesday, March 7th, 2012 AT 9:07 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Is the check engine light on? If so, have the computer scanned to identify trouble codes. Most parts stores will do it for free.
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Wednesday, March 7th, 2012 AT 9:07 PM
Tiny
D WILLIAMS
  • MEMBER
  • 6 POSTS
The throttle position sensor?
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Wednesday, March 7th, 2012 AT 9:09 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the TPS closed and wide open throttle voltages
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Wednesday, March 7th, 2012 AT 10:31 PM

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