
The truck will only do 75 MPH down a hill with the wind up it's arse !
It drived OK at 55/60 MPH, but when you put your foot down @ 60 the miss-fire starts & struggles to accelerate.
When running ther truck does not throw any smoke out, coolant temp reading normal, the turbo whistles on low revs & the truck pulls well until you reach the 2000 RPM mark...
HELP - can anyone let me have their ides & comments on what the cause of the problem is.
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