Have been having an idle issue on my 04 f150 4x4. Recently I have had the fuel filter replaced with a new fuel line as well as the MAF replaced and I would assume the shop cleaned the IAC valve at the time of the MAF. Autozones reader couldnt read my codes, so I took it to an ASE shop and they pulled codes stating the idle was surging.
This work was all done within the past couple weeks with small improvement from the fuel filter/line and a large improvement with the MAF replaced. At first I was stalling at red lights and when braking the RPMS would dip down, 70% of the time resulting in a stall - when coming to a stop. Replacing the MAF has helped remedy this issue, as now the truck idles at 500 RPM's when coming to a stop (is this a low idle in this truck? Do I need to have it raised?)
Now, the truck will stall with the wheel turned all the way to the right/left when not giving it gas. In park, the rpm's stagger, they drop around 50 and go back up to normal, constantly doing this. Especially after driving for example - an hour on the interstate.
On the interstate or going above 60+ mph, the steering wheel shakes a pretty good amount, and will return to normal in some moments. When taking off from a stop and giving the truck a good amount of gas, the truck will shake, almost sounding like the wheels are spinning. If I ease onto the gas pedal, its unnoticeable. Not really practical in all real world situations though.
Any advise will be taken into consideration, as I have just picked this truck up within the last month and need to get it on the road and 99% reliable! Thank you.
have the same problem?
Tuesday, May 13th, 2014 AT 6:03 AM