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Old January 14th, 2018, 11:53
lawsoncl lawsoncl is offline
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Join Date: Jan 2006
Location: North Idaho
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Re: When does the EGR activate?

Originally Posted by lawsoncl View Post
How does the REM determine when the Renix EGR is open if it's not controlled by the engine computer? The EGR valve is vacuum operated with a CTO switch that blocks the vacuum if the engine temp is below 100*F, and you may also have a thermal switch in the air cleaner housing to block the vacuum if the air temp is below 40*F.
Okay, feeling dumb now. The electrical solenoid is right there next to the ballast resistor.
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