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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  • 59 Answers

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 .

Jun 03, 2012 | 1995 Chevrolet Monte Carlo

2 Answers

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:---
  1. Drain and recycle the engine coolant.
  2. Remove the intake manifold cover, if necessary.
  3. Remove the exhaust crossover.
  4. Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector.
  5. Remove the ECT sensor.
see fig below:--- techmecho.jpg


Jan 04, 2011 | 2006 Chevrolet Monte Carlo

1 Answer

Where is the thermostat located on 2003 monte carlo?

Top of the waterkneck on the intake manifold. Pop the hood and trace the top radiator hose to the top of the engine, where it is clamped on is the waterkneck just under that is the thermostat. I think 2 bolts hold it on.

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Dec 01, 2010 | 2003 Chevrolet Monte Carlo

2 Answers

How do i change the map sensor on a 2002 monte carlo 3.8 litre engine?

Open both clips on each side of MAP sensor and pull right out, just press new one in, no reprogramming is needed. MAP sensor sit on top of intake.

Jun 14, 2010 | 2002 Chevrolet Monte Carlo

1 Answer

My 1997 monte carlo wont stay running

A backfire blew a hose off the intake manifold.
Put the hose back on and it will be fine.

Mar 16, 2010 | 1997 Chevrolet Monte Carlo

2 Answers

How to do valve timing 1973 Monte Carlo. running ok past year but increasingly rough; edelbrock carb just cleaned; backfiring out the intake manifold. Could this be a timing problem? Seems like the valves...

I would look inside your distributor cap for cracks or debris. This is the genneral cause of a misfire. However, if the misfire is "rythmic" as in a timed pop pop pop, than you have a collapsed lifter or a bent pushrod. Thank you, Dana

Jan 20, 2010 | Chevrolet Monte Carlo Cars & Trucks

2 Answers

Passenger side coolant leak 2004 chevy monte carlo

it is most likely coming out of the weep hole at the water pump or the plastic fittings on the water pump to upper intake manifold they are black in color ands are L shaped with O-rings

Apr 19, 2009 | 2005 Chevrolet Monte Carlo

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