89 c1500 305 v8

Asked by Apr 19, 2017 at 08:03 PM about the 1989 GMC Sierra 1500 C1500 Standard Cab LB

Question type: General

89 Gmc c1500 305 v8 Tbi .new fule pump.fule
filter.air controle.map sensor.throtle sensor.Egr.
plugs and wires still rums like crap first start high
rpm then levels off then startscto surge bad then
dies .any one know what is left to change lol

1 Answer

73,055

Should check for vacuum leaks. Snug up the intake manifold bolts, and take the TBI off and check the base gasket. There is the fuel regulator in the TBI that I'm sure is getting weak. Just check the fuel pressure, it should be 9 to 13 lbs. You can get a rebuild kit or a new regulator for this yet.

Your Answer

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,300
  • #2
    John Saffrahn
    Reputation
    3,660
  • #3
    Glenn Clingenpeel
    Reputation
    3,350
View All

Related Models For Sale

Used Ford F-150
2,229 Great Deals out of 181,368 listings starting at $1,500
Used Chevrolet Camaro
422 Great Deals out of 31,785 listings starting at $2,395

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
80 Great Deals out of 39,539 listings starting at $23,369
2016 GMC Sierra 1500 For Sale
93 Great Deals out of 3,435 listings starting at $17,977
2015 GMC Sierra 1500 For Sale
113 Great Deals out of 4,464 listings starting at $15,922
2014 GMC Sierra 1500 For Sale
120 Great Deals out of 4,700 listings starting at $12,987
2013 GMC Sierra 1500 For Sale
46 Great Deals out of 1,959 listings starting at $8,999

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.