cylinder 3 misfire 04 colorado

Asked by Mar 31, 2016 at 07:21 AM about the 2004 Chevrolet Colorado 4 Dr Z71 LS 4WD Crew Cab SB

Question type: Maintenance & Repair

I changed all my spark plugs and put brand new coil packs on it also. now my
code is reading cylinder 3 misfire.

3 Answers

73,125

P0303 CHEVROLET - Cylinder 3 Misfire Detected... Possible causes... - Faulty spark plug 3 - Clogged or faulty fuel injector 3 - Faulty ignition coil 3 - Fuel injector 3 harness is open or shorted - Fuel injector 3 circuit poor electrical connection - Ignition coil 3 harness is open or shorted - Ignition coil 3 circuit poor electrical connection - Insufficient cylinder 3 compression - Incorrect fuel pressure - Intake air leak.... The P0303 code means that the cylinder 3 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 3. If the problem persist more tests needs to be done to diagnose problem,

1 of 1 people found this helpful.

Changed​ #3 fuel injector still having open circuit​, but engine still having open circuit problem!

Head issue. Very common problem with these trucks. Valve seat wear and you lose compression. Causes rough Idle and stalling. code reads as misfire but Head will need to be replaced.

Your Answer

Colorado

Looking for a Used Colorado in your area?

CarGurus has 29,637 nationwide Colorado listings starting at $1,950.

ZIP:

Chevrolet Colorado Experts

  • #1
    Js08016
    Reputation
    280
  • #1
    tropikalpirate
    Reputation
    280
  • #3
    COMETGUY61
    Reputation
    150
View All

Related Models For Sale

Used GMC Canyon
125 Great Deals out of 12,441 listings starting at $3,299
Used Chevrolet Silverado 1500
2,165 Great Deals out of 181,268 listings starting at $1,900
Used Toyota Tacoma
591 Great Deals out of 41,804 listings starting at $2,995
Used Ford F-150
2,151 Great Deals out of 181,811 listings starting at $1,000
Used Nissan Frontier
328 Great Deals out of 20,904 listings starting at $1,995
Used GMC Sierra 1500
800 Great Deals out of 67,591 listings starting at $1,350
Used Ford Ranger
167 Great Deals out of 5,505 listings starting at $1,000
Used Dodge Ram 1500
396 Great Deals out of 10,702 listings starting at $1,500
Used Toyota Tundra
429 Great Deals out of 33,516 listings starting at $1,999
Used Dodge Dakota
119 Great Deals out of 3,651 listings starting at $1,650
Used Chevrolet S-10
10 Great Deals out of 1,265 listings starting at $1,800
Used Jeep Wrangler
281 Great Deals out of 15,898 listings starting at $2,997

Used Cars For Sale

2017 Chevrolet Colorado For Sale
20,134 listings starting at $17,995
2016 Chevrolet Colorado For Sale
62 Great Deals out of 1,734 listings starting at $14,990
2015 Chevrolet Colorado For Sale
42 Great Deals out of 1,089 listings starting at $12,990
2012 Chevrolet Colorado For Sale
28 Great Deals out of 691 listings starting at $4,900
2010 Chevrolet Colorado For Sale
7 Great Deals out of 211 listings starting at $4,700

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.