1990 Ford F-250 engine

1990 FORD F-250
140,000 MILES • 5.8L • V8 • 2WD • AUTOMATIC
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TUNA25
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  • 1 POST
My truck will start but will not idle. i have fix vacuum lines and check the throttle cable. but I am wanting to know if it is a sensor and which one
Mar 29, 2015 at 9:54 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
If there are no vacuum leaks and everything is in good condition, check the idle air control valve (IAC). It is responsible for maintaining the engine idle speed.
Mar 30, 2015 at 2:09 AM
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