Question about 1997 Chevrolet Astro
Try cleaning the egr valve. Worked for me.
The egr valve is located behind the air intake.
-Remove the air intake.
-Using 10 mm socket, universal joint adapter, extension and ratchet, remove the two 10 mm bolts securing the egr valve to the intake manifold.
-Using the extension helps, since it's a tight area to work in. Makes the removal and installation so much easier.
-Be careful not to ruin the gasket. You can replace it but you don't need to if you're careful while taking it off.
-Using a metal pick and carb cleaner, clean the egr valve until most of the carbon buildup is gone.
-Make sure the solenoid can move freely, WD-40 works well to lubricate the solenoid.
-Install egr valve, tighten bolts nice and tight, you can torque it to spec if you want (15-25 ft-lbs?).
You'll probably have to clean it every year...try not to buy cheap gas...as in crappy gas...Shell works well...Good luck
10 mm socket, 3/8 in. drive
24 in. Extension, 3/8 in. drive
3/8 in. universal joint adapter
Ratchet, 3/8 in. drive
carb cleaner, spray bottle
Posted on Mar 17, 2010
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Posted on Jan 02, 2017
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