Rough running while in gear

80

Asked by Jan 19, 2014 at 05:57 PM about the 1990 GMC Vandura G35

Question type: Maintenance & Repair

Hi John.. I have read the past with
dragonfly at the top here.. I'm experiencing
these same problems as him. . But I don't
have. Or can find this gm inline fuel
pressure tester. .I can however tell you that
when I cleaned out the throttle body it ran
smooth and i could Rev it up with no rough
idle or bog..i stop spraying and it bogs
stalls or back fires out the throttle
body.flames as well  .. I have done the other
checks you discussed. Changed rotor cap
plugs wires  . vacumn line. cleaned egr
valve haven't done the pcv valve.. Going to
change the fuel filter today. . My question is
about the idle smooth while spraying ..
1989 gmc vandura 2500 v8 305

3 Answers

62,985

Sounds like an overly lean (not enough fuel) condition. Check for vacuum leaks, faulty fuel injectors, or bad fuel pressure regulator. HTH. -Jim

1 out of 1 people think this is helpful.
80

I changed fuel filter today it runs at idle fine now but in gear it feel like it misfire or something just not right still and back fires. . Checked the fuel injectors. They are spraying dome like spray each side

80

Thanks Jim.. How will i know if the regulator is faulty

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Vandura

Looking for a Used Vandura in your area?

CarGurus has 20 nationwide Vandura listings starting at $3,995.

ZIP:

Search GMC Vandura Questions

GMC Vandura Experts

#1 John Saffrahn
John Saffrahn
Reputation 90
#2 Js08016
Js08016
Reputation 80
#2 ajodell
ajodell
Reputation 80
View All

Related Models For Sale

Used Chevrolet Chevy Van
52 listings starting at $1,895
Used GMC Safari
107 listings starting at $1,567
Used GMC Sierra 1500
908 Great Deals out of 64,755 listings starting at $1,500
Used Ford E-350
226 listings starting at $3,750
Used Dodge Ram Van
135 listings starting at $6,900
Used Ford E-150
161 listings starting at $3,650
Used GMC Syclone
11 listings starting at $12,500
Used Chevrolet Astro Cargo Van
137 listings starting at $4,995

Used Cars For Sale

1995 GMC Vandura For Sale
6 listings starting at $3,995