$3000 later and no diagnosis

788 Views 7 Replies 8 Participants Last post by dezl, Jun 17, 2008

norcalram420

Discussion Starter · #1 · Jun 17, 2008

I have an 01 with an edge chip, cold air intake and 4" exhaust. I have a loss of power that feels like the truck is struggling for fuel. It seems to happen after warm up and after a good pull up a hill at constant rpms the truck will accelerate much slower than normal. I do not have a boost gauge so I am at a loss there. I am not a gearhead so I dont understand everything about the system. I have had it to the dealership , $2200 later they told me there was nothing wrong, well it did it on the way home. Another shop told me it was a fuel issue and ran it with their gauges and no problems came up. No codes, fuel pressure seems to be ok, it must be something in the turbo?

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RedDesertDiesel

· Registered

Joined May 11, 2008

4 Posts

#4 · Jun 17, 2008

I would highly doubt the turbo.. I would lean toward a VP$$. No real way to check a pure mechanical failure on a VP$$ except to elminate it.

Also look at fuel lift pump and make sure your Fuel pressure is not going under about 5psi when the symptom occurs.

Also a boost pressure sensor that has failed within range=meaning its not outside the parameters to log fault code. Need a scanner to check this and it may only be failed when your truck acts up. Hopefully this will help