EGR Valve location
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Joined: Feb 2008
Posts: 550
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From: Lowell, Michigan
Car: 1988 Trans Am, 2005 Sierra 2500
Engine: Vortec 357
Transmission: Built TH700R4 with 26-2800 Stall
Axle/Gears: GM 10 bolt 3.73 Posi
EGR Valve location
So im just wondering where on my 305 TBI is my egv valve so i can unplug it. I need to pull my TBI unit and clean it out but I got a check engine code tge other day and the scanner told me it was my EGR valve and told me not to drive it. I get crap gas mileage, so could that be why? I was told to unplug it and my engine will run better without it. Could you show me pics of where it is located or tell me so i can fix this problem.
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Joined: Jul 2003
Posts: 1,236
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From: KY
Car: 87IROC, 740iBMW, 328iBMW, 86GMC
Engine: 5.7, 4.4LV8, 2.8, 6.0
Transmission: Manuals & Auto's
Axle/Gears: 3.27, 3.42
Re: EGR Valve location
Remove the air cleaner assembly. On the passenger side of the engine, right behind the throttle body is the egr valve. Looks like a mushroom. Disconnect the vacuum line, remove the two bolts and take the old unit with you to the nearest auto parts store. They'll help you with a replacement. Read the new directions closely, match the shim (per instructions). Replace the egr unit. Easy project.
Good luck
Good luck
Thread Starter
Senior Member
iTrader: (8)
Joined: Feb 2008
Posts: 550
Likes: 0
From: Lowell, Michigan
Car: 1988 Trans Am, 2005 Sierra 2500
Engine: Vortec 357
Transmission: Built TH700R4 with 26-2800 Stall
Axle/Gears: GM 10 bolt 3.73 Posi
Re: EGR Valve location
Remove the air cleaner assembly. On the passenger side of the engine, right behind the throttle body is the egr valve. Looks like a mushroom. Disconnect the vacuum line, remove the two bolts and take the old unit with you to the nearest auto parts store. They'll help you with a replacement. Read the new directions closely, match the shim (per instructions). Replace the egr unit. Easy project.
Good luck
Good luck
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