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
    1,370
  • #2
    Larry Thibert
    Reputation
    220
  • #3
    ShadetreeMech
    Reputation
    210
View All

Related Models For Sale

Used Chevrolet Suburban
383 listings starting at $1,995
Used GMC Yukon
14 Great Deals out of 845 listings starting at $5,950
Used GMC Sierra 1500
229 Great Deals out of 10,278 listings starting at $2,995
Used Ford F-150
433 Great Deals out of 9,102 listings starting at $922
Used Ford Explorer
45 Great Deals out of 1,393 listings starting at $3,900

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.