IM EXPERIENCING A LACK OF POWER AND MISFIRING AT...

1997 Ford F-150

Tiny

dickdiamond

April, 1, 2013 AT 7:45 PM

I'm experiencing a lack of power and misfiring at any speed above idle.
I have replaced the plugs, boots, throttle position sensor, IAT sensor, and checked visually the catalytic converter.
The fuel pressure is 40lbs. At the rail. It shows no trouble codes.
What am I missing?

FOUND 542 RELATED QUESTIONS

3 Answers

Tiny

rasmataz

April, 1, 2013 AT 7:57 PM

Try cleaning the MAF sensor and see what happens-

Tiny

dickdiamond

April, 1, 2013 AT 8:03 PM

I already did, wasn't showing any contamination. Pulled exhaust off of manifold thus taking catalytic converter out of system. It is still misfiring and running extremely rough. Can you think of anything else to try?

Tiny

rasmataz

April, 1, 2013 AT 8:06 PM

Could be the EGR and PCV valve. Go to this link: http://www.2carpros.com/articles/engine-misfires-or-runs-rough

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