1992 chevy suburban wont stay running when started

1992 CHEVROLET SUBURBAN
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D WILLIAMS
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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
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RASMATAZ
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Check the fuel pressure, idle air control valve,EGR valve, MAP and TPS sensors
Mar 7, 2012 at 9:07 PM
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JACOBANDNICKOLAS
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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
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D WILLIAMS
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  • 6 POSTS
the throttle position sensor?
Mar 7, 2012 at 9:09 PM
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RASMATAZ
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Check the TPS closed and wide open throttle voltages
Mar 7, 2012 at 10:31 PM