Calling all EGR experts - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-25-2007, 05:35 PM   #11
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I had mine cleaned, I was told it was nearly all the way clean as is, question though, it seems to make a very fast ticking sound(at times), is that normal operation of it opening/closing? (noticed this after cleaning)
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Old 11-25-2007, 05:37 PM   #12
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The EVAP Purge should click.. Most of the time the Only time the EGR will function is in gear and under load

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Old 11-27-2007, 05:07 PM   #13
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Fm > Bill
yes, you can clean it yourself. You may have to buy a new gasket to put it back together,
but often the pintle (valve) only needs to be cleaned of carbon to restore function.
I strongly agree with Bill in his suggesting that you can 'clean' the unit.
I've had considerable efforts on EGR valves, however, mine is ......and have found that they will collect carbon bits, which results in the pintle not seating securely. Thus, the code light coming on.
In my cleaning efforts, I'll start with some dental tools/picks, and finish with an air gun. It has worked on my 1995 car, and at 515,413 miles as we speak, there has never been an issue. [1995 SL2 Saturn in this case.]
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Fm >Will
Your Linear EGR (94 and newer) is a completely different type,
and doesn't respond to cleaning as well as a digital valve.
This shouldn't stop you from trying though.
In my case, the unit was Linear, while the cleaning effort worked very well.
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