Question about 2003 Pontiac Grand Prix

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Replacing intake gasket 2002 ppontiac 3800 series 2

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6ya6ya
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Posted on Jan 02, 2017

  • 7353 Answers

SOURCE: changed intake gasket and now it won't start. It

So did you replace the timing set first, or after ,it would not start after the intake was replaced. Replacing just the intake would not alter the timing components. The intake is a pretty straight forward job. Does the engine have spark? fuel pressure? The injectors should have power on one side with the key on,check one do they? All wires connected to ign coils? ground wires hooked up? Does the CK. ENG light come on with key on? have ALL fuses been checked?

Posted on Nov 15, 2009

toneman2121
  • 775 Answers

SOURCE: Replace an intake gasket

there ia a procedure for this in a repair manual at your local auto parts store

Posted on Mar 02, 2010

GM Elec
  • 1000 Answers

SOURCE: how to take heads off

Go to the Auto Zone web site, look up your year, make and model. Look in the repair info and you will find step by step instructions.

Posted on Nov 25, 2011

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1 Answer

3800 diagram


not clear what you are asking for.. water leaking around intake on a 3800 is a ongoing issue,, the intake gasket gets distorted and destroyed and I have always bought a new intake plenum and replaced the complete setup. not a difficult job if you take your time . this is a very common problem..

Jun 03, 2014 | 1998 Pontiac Grand Prix

1 Answer

3800 series2 flutters, missfires with powerloss when acceleration is apllied but idles fine,surges when warm and seems to run normal when very light on throttle. eventually gains and maintains highway


Have the intake gaskets been replaced? you could be getting a little coolant in the cylinder. these are a SUPER common problem on 3.8 series 2 engines

Mar 31, 2014 | 2000 Chevrolet Impala

1 Answer

1999 Grand Prix GTP Supercharged 3.8L gas engine. Poor fuel economy.


did you check the lower intake manifold gaskets? they go bad on the 3800 series 2, since you have the supercharger you won't have an issue with the upper intake because it is not plastic but the gaskets may be bad as well. that engine runs best with irridium plugs.

Sep 23, 2012 | 1999 Pontiac Grand Prix

1 Answer

Can a 3800 series 2 v6 replace a ht4100 v8 in a 1986 coupe deville?


Sub frame , wires, computer, BCM are all different. A 4.5 or 4.9 engine will fit if you use your intake and gaskets for a 4100.

Mar 29, 2011 | 1986 Cadillac DeVille

1 Answer

Changed intake gasket and now it won't start. It just spins like it is out of time. I replaced the timing set and it still acts the same. It is a 98 Grand Prix with a 3800 series 2 vin K


So did you replace the timing set first, or after ,it would not start after the intake was replaced. Replacing just the intake would not alter the timing components. The intake is a pretty straight forward job. Does the engine have spark? fuel pressure? The injectors should have power on one side with the key on,check one do they? All wires connected to ign coils? ground wires hooked up? Does the CK. ENG light come on with key on? have ALL fuses been checked?

Nov 15, 2009 | 1998 Pontiac Grand Prix

1 Answer

Blown upper air intake manifold on gm 3800 series two engine


Parts stores carry a kit including a manifold and gaskets. When I do the job I always replace the lower intake gaskets because they leak too. Make sure the lower manifold is not warped around the rubber gaskets towards the throttle body side, a new or used loewr manifold might be needed to ensure a correct repair.

Sep 22, 2009 | 1998 Buick LeSabre

1 Answer

I HAD THE HEAD GASKET SET CHANGED ON MY 2002 BUICK LESABRE. NOW THE CAR STARTS BUT MISSES AND KILLS. WHAT COULD POSSIBLE BE WRONG NOW?


Boy did you waste your money. Head gaskets do not go bad on these engines. You need to replace the upper intake manifold. It is leaking coolant into the combustion chamber. This is a common problem for this motor and some garages will tell you it needs head gaskets. They are wrong! I worked in a buick dealership for 20 years and have only seen one head gasket that was bad on a 3800 engine and it was not a gm original gasket.

Aug 13, 2009 | 2002 Buick LeSabre

3 Answers

How hard is it to change a head gasket on a 1998 intrigue?


8 to 10 hour if you now what our doing and lots of tolls hope it help fixya our post
thanks pierre

Jul 20, 2008 | 1998 Oldsmobile Intrigue

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