Engine misfires at high rpm no code

At a slow steady speed the engine runs good when accelerating fast the engine misfires. When the engine misfires at high RPM the truck vibrates. Up a hill is when the engine would vibrate a lot and losses power The OBD II that we have shows no code....

1 Answer

Russell Sundberg

Contributor 17 Answers
Posted on Jun 09, 2014

Russell Sundberg

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Bad ignition coils will make the truck act like this. Also low fuel pressure.

3 Related Answers

Anonymous

1 Answer
Posted on Dec 28, 2008

SOURCE: Engine vibrates, shakes car at 1700 rpm, smooth at 2000 rpm

Something similar happened to my van, and it ended up being that I needed to replace a tie rod in one of my wheels. Hope this helps! I know this was posted awhile ago.

Simon

235 Answers
Posted on Sep 26, 2009

SOURCE: get a vibration at 1700 rpm steady accel, but

It will be muck or something on the front wheels . Clean them inside and out and then have them balanced.

Anonymous

1124 Answers
Posted on Oct 06, 2009

SOURCE: F150 2003 5.4L Vibration throughout truck with acceleration

When you say "throughout" that would indicate that it is coming from the rear of the truck..

There could be a number things causing this..

It could be a bad tire or a broken belt on a tire..
A test for this is - roll along at 3 miles per hour.. If you feel a wobble - that is probably a broken belt in a tire..
Or maybe even a bent axle..

It could be a bad universal in the drive shaft..

It could be a broken shock/strut or mount or both..

Best of luck !

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I have just recently purchased a 2012 mitsubishi colt clear tech , and the slow idle speed sits at a shade under 1000rpm , is this too high and if so is it adjustable ?

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Engine misfires at high rpm no code