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Thread: EGR valve boogers
01-17-2010, 10:04 PM #1
EGR valve boogers
Had a hard time starting my '95 blazer with a 4.3l. It idled like crap and was just kinda a pain. Hooked up a scanner and it had a "EGR pintle position control problem" I removed the egr valve expecting to have to replace it and found it to be stuck open with a piece of hard black debris. I cleaned it and reinstalled it. Everything is happy now. Anyone else have issues like this? Where do such deposits originate? Is it time to run premium fuel? -Andrewh
01-17-2010, 10:15 PM #2
I have had replace mine also, I did get away with cleaning it a couple of times but that only lasted for so long. Try running some seafoam thru the fuel system this may help in cleaning up the deposits.1997 Chevy K3500
4x4 X-Cab Dually
454 Dual Exhaust
01-17-2010, 10:21 PM #3
02-08-2010, 09:04 PM #4
This is a common problem w./ the 4.3L egr valves. Cleaning the crud out helps, regular applications of seafoam via the brake booster vacuum hose keepse it to a minimum. The CES will goi away once you clean it.Still Loyal to GM after all these years...:shocked:
2006 Impala LT 3.5L
2005 Silverado WT small cab/longbed 4x4 4.3L V6
1999 Grand Am 3.4L in TX w/ our youngest
1993 GMC Jimmy 4.3L 4 door 4x4 'Ole Rusty' - 'SOLD'
1988 S-10 small cab/longbed HT3.4L Crate Engine
1970 Nova 250 I-6, factory 3 sp floor shifter.
1968 Chevelle 'Nomad' Wagon 250 I-6 w/ 3 on da' tree.
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