Question about 2004 Chevrolet Monte Carlo

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2004 monte carlo, engine light on and engine stumbles and a backfiring/popping noise from upper intake manifold.

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  • Richard Scordino May 11, 2010

    could be a burned intake valve or timing advanced way to far.

  • bee_man May 11, 2010

    Do you know what code(s) are stored in the computer? If not, take it to someplace like Autozone or Advance Auto and have them tell you. It makes a big difference in trying to diagnose the problem.

  • Anonymous Mar 15, 2014

    will intake manifold cause backfire

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Not Good! Probably upper engine damage Intake or exhaust valve, possibly camshaft,Check the spark plug or wire condition.

Posted on Sep 10, 2009

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How do u reset the timing on a 1995 chevy monte carlo 3100 engine.


Advice of Haynes manual is worth it . But to answer your Intake ?? if it is intake manifold gasket there are 3 of them . The upper planium is the Aluminum part the Air intake hose attaches TOO - a common GM loss of pressure gasket causing rough idle / drivebility issues . Then # 2 gasket is lower intake mounting to antifreeze carrying Intake manifold same air pressure loss. ## 3 is Intake base mounting to cylinder heads and has coolant carried in it to keep air / fuel mix charge cold . Now U see you did not remove cylinder heads so the Timing belts or heads not have been disturbed = no need to set timing . Timing is set by computer via sensors and Belt Load / Tension under Rpm . If you have loose / worn out Timing belt then engine will rattle when applying power in gear with foot on brake - it may stall under test I described and not want to restart - That would be reason to Look at resetting Timing issues . Good luck .

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Where is ect sensor located on 2006 monte carlo 3.5 engine


The ECT (Engine Coolant Temp sensor) should be located by the coolant thermostat housing or where the upper radiator hose connects to the engine. It screws in with a plug or small/short wire harness attached to it. -------------------------------- To replace ect sensor:---
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see fig below:--- techmecho.jpg

.Thanks.

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1 Answer

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Please take a moment to rate my answer...........Thanks

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1 Answer

My 1997 monte carlo wont stay running


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