1992 chevy suburban wont stay running when started

1992 CHEVROLET SUBURBAN
Avatar
D WILLIAMS
  • MEMBER
  • 6 POSTS
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.
Mar 7, 2012 at 8:59 PM
Advertisement
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the fuel pressure, idle air control valve,EGR valve, MAP and TPS sensors
Mar 7, 2012 at 9:07 PM
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Is the check engine light on? If so, have the computer scanned to identify trouble codes. Most parts stores will do it for free.
Mar 7, 2012 at 9:07 PM
Avatar
D WILLIAMS
  • MEMBER
  • 6 POSTS
the throttle position sensor?
Mar 7, 2012 at 9:09 PM
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the TPS closed and wide open throttle voltages
Mar 7, 2012 at 10:31 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.