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
220,965

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

Own this car?

Share your experience with others.

1999 Chevrolet S-10

Write a car review

Review another car

Shortcuts

Search Chevrolet S-10 Questions

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    9,720
  • #2
    Robert Smith
    Reputation
    3,350
  • #3
    Gene Arnett
    Reputation
    2,810
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Silverado 1500
4,098 Great Deals out of 132,894 listings starting at $1,000
Used Ford Ranger
591 Great Deals out of 11,688 listings starting at $800
Used Toyota Tacoma
1,850 Great Deals out of 32,329 listings starting at $3,500
Used GMC Sonoma
51 listings starting at $4,999
Used Ford F-150
6,022 Great Deals out of 132,252 listings starting at $900
Used GMC Sierra 1500
1,839 Great Deals out of 66,930 listings starting at $1,000
Used Dodge Dakota
18 Great Deals out of 484 listings starting at $2,999
Used Chevrolet Camaro
608 Great Deals out of 9,439 listings starting at $2,150
Used Nissan Frontier
716 Great Deals out of 23,104 listings starting at $1,400
Used Chevrolet Blazer
716 Great Deals out of 15,174 listings starting at $4,495
Used Chevrolet Silverado 2500HD
1,065 Great Deals out of 30,883 listings starting at $1,350

Used Cars for Sale

2004 Chevrolet S-10 For Sale
4 listings
2003 Chevrolet S-10 For Sale
5 Great Deals out of 36 listings starting at $3,899
2002 Chevrolet S-10 For Sale
21 listings starting at $7,995
2001 Chevrolet S-10 For Sale
21 listings starting at $8,950
2000 Chevrolet S-10 For Sale
19 listings starting at $4,495

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.