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Random misfire

Tiny
HARTLEYKID
  • MEMBER
  • 2000 CHEVROLET PRIZM
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 141,459 MILES
Why do my 2000 chevy prizm keep throwing a random misfire code I put in no spark plugs I also check engine compress it was 155 on all cylinders what can be the problem can you help me thanks
Saturday, January 29th, 2011 AT 8:53 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,057 POSTS
Hey HARTLEYKID,

A random misfire code is usually a mixture problem, have you changed the fuel filter? Also it could be the mass air flow sensor that is dirty. here is a couple of guides to help you get the problem fixed.

https://www.2carpros.com/articles/mass-air-flow-service

and

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

and

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

Run some tests and get back to us so we can continue helping you.

Best, Ken
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Thursday, February 2nd, 2017 AT 3:19 AM

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