Quote:
Originally Posted by AndrewC1989
No coolant loss to my knowledge, just repeated valve failure. My mechanic said the EGR cooler is faulty on my car and is making the plunger on the EGR valve stick which is why the valves keep failing after being replaced.
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So if a faulty cooler is damaging the valve itself, causing it to stick, then it's not the soot buildup on the valve that's the problem... Seems counterintuitive that the cooler could trash the valve repeatedly, yet one only gets valve trouble codes.
I'm really curious what damage the cooler has that could cause the valve to go bad as well.