2005 Ford F150 - 4.6L Tremble At Idle After Warmup

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LMORRIS249
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2005 Ford F150 - 4.6L Tremble At Idle After Warmup

Post 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
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Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup

Post by Pauls Automotive »

Any chance you have a bad mount?
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Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup

Post by brianp87 »

Does it have any missfires on the counter?
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Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup

Post by steven kiser »

Sounds like a vac leak to me.
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Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup

Post by ricmorin »

Fuel trims?
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Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup

Post by jbadenoch »

sound like something from drive train touching body. Fuel trims and other data would help
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Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup

Post by steven kiser »

If i were to guess and i am for lack of information :shock: , 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.
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Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup

Post by LMORRIS249 »

Engine mounts are good and no misfires on the counter
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Re: 2005 Ford F150 - 4.6L Tremble At Idle After Warmup

Post by brianp87 »

What are the fuel trims
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