That's what I found at the salvage yard also.
You said that the usually cause of failure is getting gunked up right? I bought some throttle body/air intake cleaner and will try to clean the thing out first.
How do I remove those two to clean and how to clean them? Do I just spray the cleaner in there followed by compressed air or...?
I suppose I shoul get a repair manual..
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What are EGR block off plates? What does EGR do anyway? By the sound and looks of it, it sounds like it recirculate exhaust gas back into the engine?