HELP PLEASE
50

Asked by GuruZM5T Mar 25, 2017 at 03:43 PM about the 2000 Toyota Corolla CE

Question type: Maintenance & Repair

I have a p0303 fault code. Miss fire #3. I
have changed the plugs the coils the maf
sensor and the pcv valve but still
missfiring. I also have oil threads of #3
sparkbplug.

3 Answers
223,915

Rowefast answered 7 years ago

P0303 TOYOTA - 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, 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.

4 people found this helpful.
Mark helpful
50

GuruZM5T answered 7 years ago

There are no leaks on intake and I've already changed plugs and coil over.

5 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • HELP PLEASE 3 Answers

    I have a p0303 fault code. Miss fire #3. I have changed the plugs the coils the maf sensor and the pcv valve but still missfiring. I also have oil threads of #3 sparkbplug.

    2000 Toyota Corolla CE

    -

    Maintenance & Repair

  • Toyota Corolla 2005 won't start, Please help 4 Answers

    So I recently changed the spark plugs in my 2005 toyota corolla CE and oil filter and fuel pump. But the vehicle still cranks and won't start up. I assume there must have been somewhere on the vehi...

    2005 Toyota Corolla CE

    -

    Maintenance & Repair

  • Please help 2 Answers

    I have a 2016 corolla the other day i was driving down the road and all the sudden thw car just fell to an idle and did nothing when i gave it gas i ran the code and it said it was the throttle pos...

    2016 Toyota Corolla LE

    -

    Maintenance & Repair

  • 1991 toyota corolla wont start.. need help please!!! 4 Answers

    car was running fine.. i went to wal-mart to buy grocereries and when i got back car wont start at all... the first time i tried starting the car all the instrumental lights came on on the the ACC ke...

    1991 Toyota Corolla DX

    -

    Maintenance & Repair

  • Help with 05 toyota Corolla 1 Answer

    Driving last night to my mom's funeral stop at light. Then tried to go and car would not Accelerate at all i put it in neutral then drive it jump a little and not go can anyone help me Please so ...

    2005 Toyota Corolla LE

    -

    Maintenance & Repair

Corolla

Looking for a Used Corolla in your area?

CarGurus has 2,056 nationwide Corolla listings starting at $2,795.

Postal Code:

Shortcuts

Search Toyota Corolla Questions

CarGurus Experts

  • #1
    Jeff Polhemus
    Reputation
    3,440
  • #2
    Gene Arnett
    Reputation
    3,280
  • #3
    hashimmir
    Reputation
    2,520
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Toyota Camry
58 Great Deals out of 995 listings starting at $2,212
Used Honda Civic
176 Great Deals out of 3,762 listings starting at $1,995
Used Honda Accord
42 Great Deals out of 918 listings starting at $1,599
Used Toyota RAV4
93 Great Deals out of 2,122 listings starting at $3,888
Used Honda CR-V
100 Great Deals out of 3,907 listings starting at $1,795
Used Toyota Tacoma
60 Great Deals out of 1,065 listings starting at $8,708
Used Toyota Prius
4 Great Deals out of 140 listings starting at $3,499
Used Hyundai Elantra
156 Great Deals out of 3,577 listings starting at $2,995
Used Nissan Sentra
83 Great Deals out of 1,819 listings starting at $2,195
Used Toyota 4Runner
13 Great Deals out of 302 listings starting at $9,700
Used Toyota Highlander
29 Great Deals out of 737 listings starting at $2,495

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.