Limp mode climbing hills

[bbob203]

My buddy is driving a MK4 Tdi to California he’s currently in Amarillo. He called me saying he had symptoms of power loss on a climb just past OKC. Turned car off and back in business. Car has about 210k on it and I drove it since 145k then aold to him. The car spent most of it’s life in Kentucky and southern indiana. My thoughts is the MAF and thinning air. Any ideas?

 

[WildChild80]

Sounds like dirty vanes in the turbo to me, he could try swapping a new MAF in but I would bet on the turbo

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[mrfiat]

It also could be a turbo actuator that is out of adjustment. I would make the actuator arm longer. That is what worked for me anyways. Better to do turbo boost graphs with a Vagcom if you have it. I have Vagcom and might be able to help him when he goes through Albuquerque. I am pretty busy, so it depends on when he comes through.