testing EGR & IAC (Full Version)

Blazer >> Mechanical & Maintenance >> General Tech Help >> 1st Gen S-series (1983-1994) Tech

testing EGR & IAC

  

Whutdidyousay -> testing EGR & IAC (10/16/2007 3:53:58 PM)

'93 GMC Jimmy 4x4 4-door auto with the cpi vortec v-6
Is there a way to test these? I'm showing trouble codes that seem to indicate faults with these 2 parts... I don't wanna shell out $190 for an EGR valve if it's not really broken.

  
swartlkk -> RE: testing EGR & IAC (10/16/2007 5:09:53 PM)

The electronic EGR valves typically don't go bad, but rather clog.  You may want to try removing both the EGR valve and the IAC valve and give them a good cleaning with a sensor safe carb cleaner.  An EGR gasket with an integrated screen can be purchased that will reduce the tendancy of carbon deposits from hanging up the EGR valve.

Whutdidyousay -> RE: testing EGR & IAC (10/16/2007 7:50:29 PM)

Thanks for your help swartlkk, I plan on ripping it apart and cleaning them tomorrow, hope it helps my truck.

  

Page: [1]

Return to Blazer Forum home page or view the Full Version of this page.