no idle

1992 CHEVROLET CHEYENNE
200,000 MILES • V8 • 2WD • AUTOMATIC
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CANTFIX
  • MEMBER
  • 2 POSTS
1992 CHEVY PU WILL NOT IDLE. NEW FUEL PUMP & FILTER.NEW THROTTLE BODY, TEMP. SENDER, IDLE CONTROL MOTOR, FUEL PUMP RELAY,IGNITION MOD.
ALMOST STUMPED 305 CU IN.
THANK YOU FOR ANY HELP
Feb 26, 2011 at 11:38 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
How long since overall tune-up? Any applicable trouble codes? Use a gage and check fuel pressure. Any electrical part, if there is a problem with electrical wiring, replacing the part won't fix. Does it run ok, off idle?
Feb 26, 2011 at 11:49 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Jus to add, some possible causes, below.
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Feb 26, 2011 at 11:55 AM
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CANTFIX
  • MEMBER
  • 2 POSTS
JDL,
Thanks for the reply.We finally found the problem. Changed the temp. sensor and found a broken vacuum hose.It was -25 C here when we changed the throttle body and I guess the hose split on the bottom side when we put it back on.
Appreciate the help.
Lorne
Feb 27, 2011 at 8:11 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Glad you got it going your way.
Feb 28, 2011 at 7:47 AM
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