98 Chevy express 2500, 8500 GVWR

Asked by May 30, 2017 at 08:05 PM about the 1998 Chevrolet Express G2500 Passenger Van Extended

Question type: Maintenance & Repair

The Van Stalls or acts like it's going to stall when I
pull up to a stop sign Or put it in gear . Just sitting
there at an idol It will build,  16 psi of vacuum.
When I put my foot on the brake it drops 1 pound
,Then when I put it in gear it will drop to pretty
steady to 9 pounds  . Once in a great while ,
something will give, It will  idol OK for a second
and  it will build-up to 12 psi and then idol bad and
drop back down To 9 pounds.  And then as soon as
I put it back in park the vacuum will go back up.
My fuel pressure gauge reads 58-59 psi idling and
then while I'm driving it Holds pretty steady around
63 - 65. Pretty darn close to what the old one did. I
have given it a tune up replaced the  throttle
position sensor, the idle air control valve , ERG
valve, removed and cleaned ERG pipe and port,  
upstream bank2 o2sensor, changed transmission
fluid and filter , fuel filter, compression test, all 180
except #6 170, and #8 190. Spark test was good .
As I'm sitting here letting it idle listening to the
Brewer game every 5 minutes or so, it will let a
light back pressure relief sound go from
underneath . I had just gotten this thing 2 weeks
ago still not running right the previous owner did
cut the cats out To clean them or punch them out I
am not sure I just noticed that There were clamps
on each side of each Catalytic converter .

1 Answer

Seafoam, through the vacuum line fixed..lo l

Your Answer

Chevrolet Express Experts

  • #1
    tenspeed
    Reputation
    300
  • #2
    dizybren
    Reputation
    240
  • #2
    Sarai Sanchez
    Reputation
    240
View All

Related Models For Sale

Used Chevrolet Express Cargo
5 Great Deals out of 411 listings starting at $3,995
Used GMC Savana
158 listings starting at $15,000
Used GMC Savana Cargo
11 Great Deals out of 479 listings starting at $3,995
Used Chevrolet Silverado 1500
179 Great Deals out of 9,745 listings starting at $1,700
Used Ford E-350
3 listings
Used Chevrolet Suburban
517 listings starting at $9,995
Used Ford Transit Cargo
342 listings starting at $22,995
Used Ford E-150
1 listing
Used Chevrolet Tahoe
6 Great Deals out of 750 listings starting at $3,995

Used Cars For Sale

2017 Chevrolet Express For Sale
32 listings starting at $34,994
2016 Chevrolet Express For Sale
9 listings starting at $27,994
2015 Chevrolet Express For Sale
10 listings starting at $22,994
2014 Chevrolet Express For Sale
11 listings starting at $19,950
2013 Chevrolet Express For Sale
6 listings starting at $12,991

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.