Quote:
Originally Posted by cheshired5
Boost solenoids are easy enough to test and clean without needing replacement and the problem
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Yes, I did that before replacing it, and while out noticed it leaked a bit (when sucking or blowing through it) but as no improvement and because it's the most common cause of this issue I replaced it.
Quote:
Originally Posted by cheshired5
could for example, just be a vacuum leak in the line between the solenoid and the actuator.
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if there was it would show up on the vacuum tester - none.
Quote:
Originally Posted by cheshired5
Regardless, you don't need to remove and open a turbo to diagnose a sticking VNT so check the MAP reading with ignition on, engine off and at idle
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Screenshots attached showing the values of various related parameters.
Quote:
Originally Posted by cheshired5
and view the VNT mechanism.
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Well, it moves... but if it's moving enough and / or gets stuck at some temperatures and engine speeds I can't tell.