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2007 Ford Mustang 07 Mustang Misfireing P0300

Tiny
JSHOCKER01
  • MEMBER
  • 2007 FORD MUSTANG
Engine Performance problem
2007 Ford Mustang V8 Four Wheel Drive Manual

I replaced MAF and O2 sensor. The car has a supercharger on it and when it is pulling hard between 2500-4500 RPM is starts to misfire. I you don't get on the throttle it runs smooth. The higher the gear the lower RPM's it misfires at. It also just had new high flow cats put on. This car should have 450 hp and runs like it has 150. It has 9500 miles on it.
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Monday, June 29th, 2009 AT 8:40 AM

1 Reply

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hi
Maybe camshaft sensor need diagnostics run freeze frame would help. Isn't car under warranty? Did misss just come about or after repair or part replacement?
Let me know
Thanks for donate
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Monday, June 29th, 2009 AT 10:47 AM

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