Misfire
90

Asked by Chevyman_1999 Feb 14, 2016 at 07:28 PM about the 1999 Chevrolet S-10 LS Wide Stance Extended Cab 4WD

Question type: Maintenance & Repair

I have a 1999 s10 4.3l vortec, it misses in
cylinder 4, I have replaced the spark plug,
and plug wire, but it continues to misfire, I
am thinking I have a problem with the
distributor cap or the whole distributor, I
don't have the catalytic converter because
it rusted off ( typical GM product) could it
be because it isn't reading co2

2 Answers
223,745

Rowefast answered 8 years ago

Yes needs the cats on there. ECU can't adjust the air fuel mixture to were it needs to be. Its probably running rich.

2 people found this helpful.
Best Answer Mark helpful
90

Chevyman_1999 answered 8 years ago

I believe it's running rich in hoping its the cats and not a valve going bad because if it is I'm going to do a Cummins 4bt swap lol

Mark helpful

Your Answer:

Related Questions

  • Misfire 2 Answers

    I have a 1999 s10 4.3l vortec, it misses in cylinder 4, I have replaced the spark plug, and plug wire, but it continues to misfire, I am thinking I have a problem with the distributor cap or the w...

    1999 Chevrolet S-10 LS Wide Stance Extended Cab 4WD

    -

    Maintenance & Repair

  • random misfire 6 Answers

    I have a 2000 s10 4.3 that has a bad miss and i changed the plugs and distributor and distributor cap and rotary button and it syill is missing so i ran a diagnostic test and it said random misfi...

    2000 Chevrolet S-10 LS Xtreme RWD

    -

    Maintenance & Repair

  • 2001 Chevy 4.3 misfire 2 Answers

    2001 chevy 4.3 misfire on number 3 and 6 cylinders 30%. No codes, but check engine light comes on. How do I fix it? I've changed rotor and cap, plugs and wires, whats next? PLEASE HELP... What I did w...

    2001 Chevrolet S-10

    -

    Maintenance & Repair

  • Misfire 1 Answer

    Start my truck and can drive a whole tank of gas out without a problem,but if I shut off and re crank it up it misfires. Can anyone tell me what's the issue I have at hand?

    1990 Chevrolet S-10 RWD

    -

    Maintenance & Repair

  • 2002 Chevy s10 misfire 3 Answers

    When having to accellerate hard or drive up-hill while accelerating my service engine soon light will flash. It has been doing this ever since I've bought the truck. It is a 2002, 6 cyl 3.4L with o...

    2002 Chevrolet S-10 Extended Cab RWD

    -

    Maintenance & Repair

Shortcuts

Search Chevrolet S-10 Questions

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    9,840
  • #2
    Robert Smith
    Reputation
    3,410
  • #3
    Gene Arnett
    Reputation
    2,820
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
211 Great Deals out of 5,943 listings starting at $3,995
Used Ford Ranger
15 Great Deals out of 1,461 listings starting at $2,888
Used Toyota Tacoma
55 Great Deals out of 1,032 listings starting at $8,708
Used Ford F-150
289 Great Deals out of 15,384 listings starting at $1,712
Used Dodge Dakota
19 listings starting at $4,394
Used GMC Sierra 1500
127 Great Deals out of 6,857 listings starting at $3,975
Used Chevrolet Blazer
16 Great Deals out of 824 listings starting at $2,888
Used Chevrolet Camaro
26 Great Deals out of 347 listings starting at $10,500
Used Chevrolet Silverado 2500HD
12 Great Deals out of 1,160 listings starting at $8,999
Used Chevrolet C/K 1500
4 listings
Used Toyota Tundra
50 Great Deals out of 1,126 listings starting at $5,999
Used Nissan Frontier
21 Great Deals out of 910 listings starting at $6,989

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. Content will be removed if CarGurus becomes aware that it violates our policies.