so my 1992 5.7 suburban's egr valve is opening and closing every 5-10 seconds

Asked by Oct 09, 2016 at 07:01 PM about the 1992 GMC Suburban

Question type: Maintenance & Repair

So I have replaced o2 and cleared code, no new codes, EGR valve is opening
and closing every 5-10 seconds cold or hot causing engine to surge at idle
runs fine at speed, any ideas ? I have not replaced the EGR controller yet, but
I have cleaned both EGR and IAC. I can see the EGR cycling and it is the
cause of the surge if I unhook vacuum line it stops of course.

No Answers Yet

Your Answer:

GMC Suburban Experts

  • #1
    LouB
    Reputation
    1,590
  • #2
    ShadetreeMech
    Reputation
    260
  • #2
    Larry Thibert
    Reputation
    260
View All

Related Models For Sale

Used Chevrolet Suburban
15 Great Deals out of 554 listings starting at $6,990
Used GMC Yukon
12 Great Deals out of 1,113 listings starting at $3,995
Used GMC Sierra 1500
84 Great Deals out of 11,002 listings starting at $3,880
Used Ford F-150
122 Great Deals out of 10,965 listings starting at $369
Used Ford Explorer
25 Great Deals out of 1,748 listings starting at $5,777

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.