BlueBellman

I just bought a 06 f150, it runs and shifts great. The only prob is it revs very high when I cranks it. Please help!

techrep

iTrader: (1)

clean your throttle body and maf...

Bigbucks243

It's might just be because the motor is cold..

BlueBellman

Ok, thanks. The truck is also loud in low gear, other than that it shifts and runs fine. I have read other year model f150s has probs with air control valve. When I try to look up the part for my truck it will not pull up. Not sure if my truck has one(4.6 V8). The guy I got truck from said he put heavy duty fan clutch on. Wonder if that's the prob. Any help welcome!

Fordfan2006

does it sound like a diesel on high idle? Like can you hear the high idle sound when you put it in drive and start driving it?

BlueBellman

yes sir, once it pick up speed it is fine. if I get on the gas hard(to pass) it gets loud again.

VTX1800N1

... because you don't have one. Your truck is drive by wire, so the computer controls the throttle plate directly.

BlueBellman

So is there anything I can do?

VTX1800N1

How many RPM is it turning at cold start and at what ambient temp? How long does it idle till it kicks down?

Fordfan2006

the one I drove all summer was at like 50 or 60 outside and it did it for a minute or two an took forever to get to operating temperature