Why my car cuts out and wont pass when I try it cut out and ****

Tiny
DEB8822
  • MEMBER
  • 2001 CHEVROLET MALIBU
  • 155 MILES
Its had full tune up and fuel pump and dos not do it all times sometimes runs real good cant figure the dam thing out a friend said it could be dirty intake and told me to put sea foam to clean
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Sunday, September 11th, 2011 AT 5:57 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
If the intake was dirty, it would do it all the time. Has the check engine light ever come on when this happens? Was the fuel filter replaced when you got the new fuel pump?
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Sunday, September 11th, 2011 AT 6:00 PM
Tiny
DEB8822
  • MEMBER
Check engine light never on thats why we cant figure out because no codes come up eaither and fuel filter was changed twice
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Sunday, September 11th, 2011 AT 8:31 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
The only thing I can think of then is dirt in the tank or a faulty ignition system. The bad part is the problem only happens once in awhile. That makes it very difficult to contend with. I hate to say it, but in situations like this, we usually have to wait until the problem gets worse before it can be identified. Otherwise, we start replacing parts that are still good. It almost makes me question the wiring to the crank or cam sensor. Almost as if there is an internal break in a wire that doesn't fully make contact at times and then others it is fine. It could also be one of those sensors that are screwing with the ignition timing causing a loss in power. I hate these because it becomes a guessing game. Check the wiring to the sensors that I mentioned. Make sure where they connect to the component is clean and not corroded. Also, if you can, check continunity in the wiring to them while moving the wiring around to see if there is a change that would indicate a bad wire.

I hope this helps.
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Monday, September 12th, 2011 AT 4:03 AM

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