EGR valve sticks open only when it warms up. I replaced EGR four times and i replaced the PCM and EGR connector. I am at a loss.
Mar 13, 2019 at 3:42 PM
When warmed up EGR valve sticks open
1995 GMC JIMMY
RICH MITCHELL
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Good evening,
The reason the valve gets stuck open is from carbon that is in the system and it holds the pindle up and it creates a vacuum leak.
The engine has to be de carboned to stop this from happening. There is no issue with the valve or any other component. It is carbon.
Roy
The reason the valve gets stuck open is from carbon that is in the system and it holds the pindle up and it creates a vacuum leak.
The engine has to be de carboned to stop this from happening. There is no issue with the valve or any other component. It is carbon.
Roy
Mar 15, 2019 at 7:32 PM