Question about Cars & Trucks

1 Answer

Got a 99 chevy s10 with a po 303 code any help would help

Posted by Anonymous on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 105 Answers

Your P0303 means: "Cylinder #3 Misfire Detected." This could involve a simple matter of a bad spark plug, plug wire or something a bit more serious. If you have separate coils for each cylinder or groups of cylinders, then you need to check the coil pack to the coil over #3 Cylinder. Sometimes it could also mean a vacuum leak ANYWHERE on the Engine and lastly a Valve problem in that the intake or exhaust valve on Cylinder #3 is carboned up. I would recommend getting a Haynes Manual, available at most part stores to go through their diagnostic as to your misfire. Remember, in obtaining a Code, it has a lot more to do with a simple 'misfire detected', it's a starting point to where to look. A vacuum gauge and a compression gauge would help should it not be something so simple as a spark plug, plug wire, coil or a distributor cap & rotor button that has too much corrosion on it.

I hope this helps you a little,

As Always,

"00 Buck"

Posted on Jul 18, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Po 2000 code On Chevy cavalier 99


P02000 is not a valid code. Please recheck. One to many numbers there.

Apr 22, 2015 | 1999 Chevrolet Cavalier

1 Answer

Po 218,po 303, po 138, and po141. Jeep Liberty


P0218/ overheat transmission, p0303 / #3 cylinder misfire, p0138 / O2 sensor, p0141 is rear O2 sensor, hope this helps

Aug 29, 2014 | Cars & Trucks

1 Answer

2006 kIA SEDONA THROW CODE PO 016


Do a cylinder leak down test

If you hear a puff in the intake or exhaust,
then the valves don't seal,thus the misfires

Have to pull the heads & have them repaired

Apr 02, 2014 | Cars & Trucks

1 Answer

99 Chevy S10 Blazer that seems to start in second gear


run fault codes to check for servo/ solenoid problems --TCM faults

Jan 28, 2014 | Cars & Trucks

1 Answer

What is code po 303


Code 303 is for a cylinder miss on number 3 cylinder.
It could be caused by a problem with the ignition, fuel injector, or mechanical issue with the engine.

Apr 08, 2013 | 2000 Mazda 626

1 Answer

My 99 chevy s10 bogs down and wants to die and the check engine light is flashing. what can i do to fix it?


The check engine light flashing usually indicates a misfire. What engine do you have? Pulling the codes from the computer will help narrow down the possibilities.

Dec 30, 2012 | Cars & Trucks

1 Answer

Can i put a 5.7 tbi v8 into a 99 chevie s10


it'll take some wrenchin. and a bit of fabricating... BUT it is possible!

Jun 23, 2012 | Chevrolet S10 Cars & Trucks

1 Answer

Trouble code P0303 for 99 aurora


PO 300 codes are cylinder misfires

The 3 at the end of 303 is cylinder nunber 3

On some vehicle systems when a MIL Lamp flashes
it indicates that the misfire is so bad that it could damage
the exhaust converter

So you should not use it until you have it diagnosed

Won't be a spark plug issue
It is an ignition coil problem,but why
you need to find out.

Jun 08, 2012 | 2003 Oldsmobile Alero

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

277 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

78267 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

14405 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...