Question about 2003 Oldsmobile Silhouette

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Where is egr valve on 2003 olds sihloette 3400 engine

Need to check egr valve and dont know where it is located

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

bbtoast
  • 319 Answers

SOURCE: engine 3.1

Hi

Please try this link that should get you started in locating the parts you have listed.

From that page, you will find links to other info about your vehicle!

Good luck!

Brian

Posted on Sep 06, 2008

  • 328 Answers

SOURCE: poor milage

roughly between 270- 330miles out of a tank of gas think its like 17.5 gal

Posted on Apr 14, 2009

  • 74 Answers

SOURCE: olds 2000 silhouette egr replacement

there is no easy way car manufacturers make cars for Assembly not for repair, sorry if this is not what you wanted to hear but its true. that said it may be better to look at it from underneath but please follow all the safety instructions in the owners hand book before going under your car

hope you find this helpful regards JR

Posted on May 30, 2009

  • 840 Answers

SOURCE: 1999 Olds Alero 3400 motor -- location of Crankshaft sensor

Welcome to fixya. If you need anything else go to www.collisionrepairadvice.com here is the location.
On the lower rear of the engine (LA1) for the 7x
and for the 24x

On the lower rear of the engine (LA1

Posted on Jul 26, 2009

Testimonial: "Got it Thank You!!! Actually my problem was a bad fuel pump in the gas tank."

  • 14036 Answers

SOURCE: Hose reassembly of a 3400 sfi engine in a 1999 olds alero.

YOU GOING TO HAVE TO GO TO DEALERSHIP.THEY PROBABLY CAN PULL UP YOUR HOSE DIAGRAM ON COMPUTER.BUT THE HAYNES.REPAIR MANUAL DONT SHOW ENOUGH PICTURES.NOW A OLDS ALERO REPAIR MANUAL FROM GM WILL SHOW YOU EVERY THING.BUT THEY ARE EXPENSIVE.OR YOU CAN GO TO AUTO ZONE AND BUY THE CD- ROM ALL DATA DIY.COM.IT WILL PROBABLY HELP YOU FIND HOSE DIAGRAM YOU NEED.

Posted on Aug 18, 2009

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1 Answer

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Betty, Check the attached EGR links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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The EGR valve takes exhaust gases and inserts them into the intake. Generally the EGR is near the center of the engine toward the back. It should be connected to the intake manifold and a pipe that comes from the exhaust manifold. It's not terribly difficult to change.

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see pics below. Please let me know if you have more questions.

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3.8 Liter engine (#1 below):

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part look like this:

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1 Answer

Does anyone have engine schematics for a 2003 pontiac 3.1 V6? Or know of a site where I can find engine schematics? I have to replace an EGR Valve but don't know where it is located.


If you don't know where the EGR Valve is located, it is safe to assume that you did not properly diagnose your EGR system...how do you know the valve needs replacing?

If you are trying to fix a trouble code P0401 " Exhaust Gas Recirculation (EGR) Insufficient Flow" (This is a very common code with 3.1L GM Engines)
An EGR Valve replacement will most likely make you about $125 poorer than you were before and will not fix the problem.

Your EGR port into the intake manifold is most likely clogged up and needs to be cleaned out.

You will need a Throttle Body Gasket, an EGR Gasket, a can of ThrottleBody and Intake Cleaner, and a little antifreeze. (You will lose just a little when you remove the throttle body.)

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Remove the EGR Valve and the Throttle Body. Use a screw driver or pick to chip out the carbon buildup in the EGR port going into the intake manifold. You will probably have to work it from the intake side as well as the EGR side to get as much of the black carbon out as possible. Be careful not to let this stuff go down into the intake plenum - you will burn some valves if it gets in there. Then use the Throttle Body and Intake cleaner to finish the cleanup. (It helps to take a rag and stuff it into the intake manifold just past the EGR port to catch the gunk so it doesn't go down into the plenum...just don't forget to remove the rag before putting the Throttle Body back on)

Put everything back together and top-off your antifreeze and clear your computer codes. That should fix it.

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