Join Date: Apr 2012
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firstly, your egt probe should be tapped as close to the exhaust port as possible to get an accurate reading. the best place is in the manifold, number 8 port. easiest spot to tap.
second, it's possible the ebpv is being commanded shut due to a bad ect sensor or one of the other inputs the pcm uses to control it. or it could just be sticking. or you haven't reached operating temp when this is occurring and the ebpv is just doing what it should.
if the veicle has reached operating temp when this happens, try disconnecting the ebpv solenoid, located under the turbo. this will confirm that it is an ebpv issue and you can further diagnose where the fault is
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