# F150 engine vibration?

**URL:** <https://community.cartalk.com/t/f150-engine-vibration/64333>\
**Category:** Maintenance/Repairs\
**Created:** [May 3, 2011, 12:22am UTC](https://community.cartalk.com/t/f150-engine-vibration/64333 "2011-05-03T00:22:56Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Lrjoyce](https://avatars.discourse-cdn.com/v4/letter/l/eada6e/32.png) [@Lrjoyce](https://community.cartalk.com/u/Lrjoyce)\
**Post date:** [May 3, 2011, 12:22am UTC](https://community.cartalk.com/t/f150-engine-vibration/64333/1 "2011-05-03T00:22:56Z")

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I have a 2000 f150, 4.6l v8. I have two symptoms that I think are related but I am not sure. The truck has 92000 miles on it. No trouble codes.

1st. I get a vibration at about 67 mph that seems to pulsate.

2nd. I get a similar vibration at about 1200 rpm in park. This one seems to be much worse when i lift my foot from the accelerator.

I have had-the truck about a month, and just had the tires rotated and balanced.

Any help would be appreciated.

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**Author:** ![waterboy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/waterboy/32/764_2.png) [@waterboy](https://community.cartalk.com/u/waterboy)\
**Post date:** [May 3, 2011, 1:43am UTC](https://community.cartalk.com/t/f150-engine-vibration/64333/2 "2011-05-03T01:43:38Z")

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What maintenance as far as plugs, air and fuel filter?

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**Author:** ![chaissos](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/chaissos/32/2347_2.png) [@chaissos](https://community.cartalk.com/u/chaissos)\
**Post date:** [May 3, 2011, 1:51am UTC](https://community.cartalk.com/t/f150-engine-vibration/64333/3 "2011-05-03T01:51:25Z")

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Doesn’t the 4.6 have a harmonic balancer? I’m not sure.

Seeing as how this vibration also happens in park, when you’re…parked…check into that first. I wouldn’t worry about the moving vibration until that’s sorted out. If they’re related, which is very possible, then the moving vibration will go away when you fix the other one.

Chase

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**Author:** ![Lrjoyce](https://avatars.discourse-cdn.com/v4/letter/l/eada6e/32.png) [@Lrjoyce](https://community.cartalk.com/u/Lrjoyce)\
**Post date:** [May 3, 2011, 10:49am UTC](https://community.cartalk.com/t/f150-engine-vibration/64333/4 "2011-05-03T10:49:47Z")

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As far as maintenance, nothing yet, I have had the truck just a few weeks. Tire balance is the only thing besides a set of shocks

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**Author:** ![wayneelowe](https://avatars.discourse-cdn.com/v4/letter/w/c6cbf5/32.png) [@wayneelowe](https://community.cartalk.com/u/wayneelowe)\
**Post date:** [May 3, 2011, 5:27pm UTC](https://community.cartalk.com/t/f150-engine-vibration/64333/5 "2011-05-03T17:27:51Z")

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I would check for fuel pressure and spark plug fowling that would cause uneven ignition. Also the motor mounts on Ford have broken or loosened for that year.