Mechanics

WHY IS MY TRUCK IDLING SO @1500 RPM AFTER THE REPLACEMENT OF EGR VALVE, IAC CONNECTOR AND VALVE ALSO THE THROTTLE POSITION SENSOR

1995 Chevrolet Tahoe • 220,000 miles

When I turn the truck on it idles below 1k rpm for about 10 seconds then the rpms increase to 1500 rpm and thats where it remains once the engine heats up
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Edavis2012
January 10, 2012.




Try cleaning the IACV/TB and check the TPS closed and WOT voltages-start here

Tiny
Rasmataz
Jan 10, 2012.
Maybe vacuum leak was throttle plate cleaned? Was high idle problem before parts replacement? Check engine light on? Do you have acess to a scanner?

Docfixit
Jan 10, 2012.
I check for leaks with carb cleaner and listened for changes in idle speed, nothing, my check engine light only comes on when the truck is in gear at a stop. I thought it might be my tps so I tested and replaced it. I have left my battery unplugged for a half hour to reset the ecm after I replaced my egr valve, iacv and connector and tps.
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Tiny
Edavis2012
Jan 10, 2012.
It probably has to relearn the idle speed due to battery disconnection-scan the computer for code/s

Tiny
Rasmataz
Jan 10, 2012.

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