Question about 2000 Chevrolet S-10

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I have 2000 chevy s10 2.2 liter on srat up it idles a little rough and when you throttle it it is running rough and has a rattling sound coming from the top of the motor rite by the throttle when you hit the gas wide open it boggs down and you can hear it sucking through the intake it didnt start doing this till my brother in law ran it out of gas so I change the plugs and wires did a fuel system cleaning changed fuel filter and good gas and changed timing chain and sprockets and guide and drilled holes on the catalyct converter the check engine light is on and it says flexible fuel.sensor circuit high input then it has another one saying the same thing but pending I need help bad only vehicle I have and I got a kid any sugestions

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: 95 GMC Jimmy 4.3l W vin rough idle

My problem was solved when I repaired my 4 wd activation dash switch. The switch was contacting on 2WD & 4HI at the same time. The front differential activation is vacuum activated possibly creating a tug of war that didn't actually engage it but drained off vacuum from the engine? A theory at best but stumbbled across it because I knew the switch wasn't working properly I repaired it and low and behold rough idle disappeared and all is good for 3 weeks running.

Posted on Dec 10, 2008

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SOURCE: 1998 Chevy s10 4 cylinder running rough

One thing to check is the fuel pressure regulator.
If the diaphram is leaking it will cause gas to be pulled into the vacuum system causing lots of white smoke and extreme rough running.

Posted on Mar 03, 2009

  • 1 Answer

SOURCE: rough idle and runs real rough driving. Alot of fuel consumption!

If you cant connect to the PCU I would start there, check every single fuse, and grounds for the computer, If they are all good test with a know good computer!

Posted on Apr 09, 2009

pippall
  • 1486 Answers

SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

  • 14036 Answers

SOURCE: Chevy 3500 Express truck. fuel problem?

IF YOU GOT CYLINDER MISFIRE.OR OPEN FUEL INJECTOR.THAT WILL CAUSE THE PCM TO ENRICHEN FUEL MIXTURE.TO ADJUST TO DEAD CYLINDER.WHICH ACT AS A LARGE VACUUM LEAK.THATS WHY YOUR EXHAUST TAIL PIPES HAS A RAW FUEL SMELL AND WHITE SMOKES.

Posted on Sep 03, 2009

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change air filter.clean throttle plates.remove throttle body remove all electrical parts also all plastics and rubber parts.clean throttle body with gum out throttle body cleaner.dry off throttle body.replace gasket.scan it to check to see if egr valve leaking.also check all vacuum hoses.and pvc valve.

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