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

Add photo

Related Questions

Search GMC Suburban Questions

GMC Suburban Experts

#1 LouB
LouB
Reputation 1,300
#2 ShadetreeMech
ShadetreeMech
Reputation 190
#2 Larry Thibert
Larry Thibert
Reputation 190
View All

Related Models For Sale

Used Chevrolet Suburban
360 Great Deals out of 19,149 listings starting at $2,295
Used GMC Yukon
372 Great Deals out of 17,282 listings starting at $2,500
Used GMC Sierra 1500
801 Great Deals out of 67,044 listings starting at $1,499
Used Ford F-150
2,259 Great Deals out of 209,447 listings starting at $1,499
Used Toyota 4Runner
283 Great Deals out of 20,880 listings starting at $1,995

Used Cars For Sale

1999 GMC Suburban For Sale
49 listings starting at $3,500
1997 GMC Suburban For Sale
20 listings starting at $3,995
1996 GMC Suburban For Sale
16 listings starting at $3,995