EGR Valve location

Hello Some of these engines did not have an EGR in 2002 but if it did it would be in the diagram below. The 4.3L engine's EGR valve is located on the top, front of the engine. EGR valve is pictured below.. If you need replacement procedures just let me know..

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You can give me your engine's ID code if you would like and I can look it up to see if it matches the 2002 S-10 4.3L engines. The 4.3L engine identification number is located on the left side rear of the engine block or on the right side rear and typically is a 9 digit number stamped or laser etched onto the engine. If it isn't there, it is probably not the original engine to begin with, but you can search for the ID code in another area so I can double check with the list of codes for the 4.3L engine..

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I will do my best to find the Number but If I can't due to parts being in my way, can you use my VIN num. to check the codes you need to check?

Its stock and hasn't been worked on by anyone since I bought it new from the dealer.

Oh, well if you are the only owner then the engine is correct engine.

You must be overlooking EGR valve ? Maybe there is another small component hiding the valve?

Is the engine code on showing that EGR is faulty ?

My EGR valve that I bought looks like the one below. My codes have not come up for it yet but after replacing the plugs, wires, cap, and coil I did research and found that the EGR can get stuck open and make the truck run like it has an oversized cam (which it does and gets about 10 MPG) so i just got the Valve and Gasket.

Sorry about that, the one I posted was just a basic egr valve shown. Your picture is the correct one for your vehicle.

Without being able to see your engine I really can't help you locate it if it isn't where it should be. Perhaps a call to your local Chevrolet dealer may be able to help as to where it will be if it isn't on the top front of the engine as it should be.

Or if you have a digital camera you can take a pic of where valve should be compared to the diagram and post it or email it to me ?



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I have a pic of the 2000 compared to the 2002: 2000 (missing EGR)

2002 (With EGR)

- Notice the EGR off the the right of the alternator (its kind of shiny in the 2002 pic but its not in the same spot on the 2000.

Yes, but I meant a pic of your actual engine so I can see what the area looks like where the EGR should be.

so your asking for a picture of the whole engine bay to try to see if you would know where the EGR valve is? (correct?) because the valve should be in the blank spot in the 2000 pic.

Okay, I am confused now..

Your vehicle you have listed is a 2002 model.. You have the 2002 pictured WITH the EGR valve?.. You are saying that the 2000 model is the one without the valve now...? Clear me up a little please? I will trace the vacuum hose from intake to the valve in vacuum diagrams once I know which model it is.



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I'm sorry that was my fault. The top pic is my truck that I need to fix the EGR and its the 2002. The bottom one is the truck that has the same engine but has the EGR is plain site right where the diagram and sent had it located.... so the top one is the one that has the problem. sorry i get confused too.


Good luck I traced hoses and wiring all night haha.

Isn't that a bolt hole behind the hose in the pic same place as 2000 model? Looks like it is just gone?

there is one on the mount below the top pully but nothing in the shape on the valve... wouldn"t there be two hole to mount the valve and two for the valve to do its thing.

Oh okay, sorry hard to tell from the pic. You may need to call the dealer and give them your VIN to see if they can tell you where it is at because all of my sources list it in the same spot, sorry. I do know that not all vehicles are equipped with the EGR valve but I would think that the S-10 would have one .




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"bluelightnin6 Posted: Fri Feb 13, 2009 7:52 am Post subject:

Oh okay, sorry hard to tell from the pic. You may need to call the dealer and give them your VIN to see if they can tell you where it is at because all of my sources list it in the same spot, sorry. I do know that not all vehicles are equipped with the EGR valve but I would think that the S-10 would have one . "

[quote:bdca71d36c="Gooch1548"]I did and I got my answer. Thanks for all the time and the help.[/quote:bdca71d36c]


I am having the same problem, and my engine looks the same as the photo you posted. I also called my dealer and gave them my VIN number but they couldn't tell me where the EGR valve is located, so I was wondering if you could tell me where you found it?

Check the 8th digit of your vehicle vin
if it is an X you have no egr valve, anything after 1998
may or may not have egr.
even some of the W engines 1999 and newer also
had no egr, my guess is you have no egr.

I work for a GM dealer

hope this helps
Josh

Some do not have one!. Starting in 02, emissions were clean enough to not need EGR. I know I have one 02 Blazer S 10,4.3L that has no EGR valve. I had a trouble code and someone told me it was for egr, bought one, and after 4 shops couldn't find it, another told me about this (no wonder we couldn't find it, NOT THERE)

Do you know what the trouble code turned out to be? I have an 02 Chevy s10 4.3L that has no EGR. Check engine light has been on for months and cannot figure out what the problem is. The code says too lean bank 1, bank 2. Have changed 02 sensors, MAF sensor, all 6 injectors, fuel pressure regulator, upper and lower intake gaskets, new fuel pump, full tune up. Chevy, my mechanic and other reputable shops can't figure out what the problem is.

I need to replace it for a miss fire, but i cannot locate it.

are you sure it is EGR? best thing on misfires is let a pro do it because of how many things can be bad computer wise they can freeze frame it and check it from there. also a vacuum leak and low fuel pressure will cause a misfire as well. auto parts rent gauge and it should be 60-66psi key on no lower or wont run.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

forgot to send picture of valve location.

I agree with HMAC300. The EGR will not cause a misfire.

Sorry to hijack the post but my 2000 blazer with the 4.3 is getting horrible mileage, between 8 & 10 mpg no matter if in town or on the highway. I changed the air filter, plugs and wires and little to no change. I don't know the history of it so no idea what had been done. I do know the 4wd doesn't work and it is missing the vaccum line that goes to the actuator, but haven't had time to dig farther on that yet. I have read the EGR valve can get plugged and hurt the mileage and that it can be cleaned rather than replaced. Is that true? or am I better off just replacing it? What else could be causing my poor mileage? I hate sticking a lot of money into it but it's in great shape so may have to bite the bullet.

Hey LITTLEE_DOMN8R,

Is the engine running okay? if so the the EGR valve is okay. I would look more toward the injector regulator leaking internally which is inside the intake manifold.

Please let us know what you find so it will help others.

Best, Ken

Four cylinder two wheel drive automatic 155,000 miles.

Where is the EGR valve located on the 2.2 liter four cylinder Vortec engine?

Hello,

The EGR valve is located at the rear of the engine on the 4 cylinder and at the front of the engine for the 6 cylinder.

Here is a video on how to test the EGR valve check it out.

https://youtu.be/DqUCbbKdWf4

Here are the location diagrams (below).

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken