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2005 Ford F150 - 4.6L Tremble At Idle After Warmup
Posted: Mon Feb 11, 2013 6:45 am
by LMORRIS249
Truck has 66k miles. Starts fine and idles fine until the engine gets warm and then you can feel a tremble in the seat. It also does this at approx. 45 to 50 mph after its warm. Dealership has cleaned the air intake system and reprogrammed the computer and there are no codes stored.
Open to suggestions. Thanks
Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup
Posted: Mon Feb 11, 2013 7:07 am
by Pauls Automotive
Any chance you have a bad mount?
Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup
Posted: Mon Feb 11, 2013 7:11 am
by brianp87
Does it have any missfires on the counter?
Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup
Posted: Mon Feb 11, 2013 12:18 pm
by steven kiser
Sounds like a vac leak to me.
Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup
Posted: Mon Feb 11, 2013 12:32 pm
by ricmorin
Fuel trims?
Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup
Posted: Mon Feb 11, 2013 2:53 pm
by jbadenoch
sound like something from drive train touching body. Fuel trims and other data would help
Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup
Posted: Tue Feb 12, 2013 2:38 am
by steven kiser
If i were to guess and i am for lack of information
, i would go with the speed factor meaning when it shifts into over drive and the vibration being present after warm up in drive. If it were stated that at the speeds indicated you could make the noise come and go by pressing and releasing the gas pedal i would be inclined to agree with something hitting the body or something that isn't insulated. This reminds me of the Green Muzi Ford that wouldn't start.
Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup
Posted: Tue Feb 12, 2013 5:40 am
by LMORRIS249
Engine mounts are good and no misfires on the counter
Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup
Posted: Tue Feb 12, 2013 6:46 am
by brianp87
What are the fuel trims