Question about 2003 Pontiac Vibe

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2003 Pontiac Vibe - 4 Cyl. 150k miles. Ignition coils keep going bad - every 4-6k miles. Coil 1 has been replaced 4 times, Coil 3 once. Coil 4 twice in the past year (20k miles). All spark plugs

Car is driven a lot in city. around 1500 miles a month. Coil 1 has been the biggest problem. Engine runs a bit rough on and off for a few days - then it's really rough and CEL comes on. p0301 (or whatever cylinder it is) We've also had a p0171 (fuel mix too lean) come up a few times in a year or so. I've replaced the air filter, put fuel injector in, and I've poked around for obvious hose leaks (haven't found any) - I'm not sure if this code is related to the coil problems - the errors don't come up together.

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  • Anonymous Jan 08, 2013

    Put in clean oil Full Syn like Mobil 1 form Wal Mart 5W-20 or 5W-30

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1 Answer

Install new spark plugs, 4 new coils & replace the oxygen sensors

O2 Sensors are only good for 100,000 miles, then slow
down or quite

No idea why the coils do not last 5 or 6 years

Cylinder #1 is always at the front on a 4 cyl

Go to Rock Auto --Buy Wells Coils,NGK Double
Platinum Plugs & NTK O2 Sensor

Those parts are expensive because you have a Totota
Motor I guess

Clean MAF Sensor with CRC MAF Sensor Cleaner

Posted on Jan 08, 2013

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 2009 Vibe - Traction control & engine lights on, VSC off flashing

The exact same thing has just happened to my 2009 Vibe. It has 44,000 kms on it. We'll be getting it looked at in a few days. Did you ever get this resolved?

Posted on Jan 01, 2011

  • 1 Answer

SOURCE: 1997 PONTIAC SUNFIRE ENGINE CODE 0P300 . NEW CRANK

none fire on plug and the coil and the mdule ers good

Posted on Sep 02, 2009

  • 85 Answers

SOURCE: No fire from coil to #1 cylinder

Ok since you did all that if you want to swap around fuel injectors taking note where you put cylinder 1 injector. Lets say you swapped it with cylinder 4 . Now if you get a different code say P0304 which is for cylinder 4 misfire then you know it is your injector at fault. These are wear items and should be replaced every 100,000 miles.
Also i would suggest if you dont want to do that is get some good high octane gas when you are completely empty and fill to 1/4 tank now put in Lucas Oil fuel injector cleaner and run the car till empty. Now fill up tank with high octane gas in see if this helps. Clear code after your second tank of gas and see if the code comes back. if code does pop back up then i would do the swapping of injectors as i stated earlier. I hope this helps and good luck with the diagnosis.

Posted on Feb 21, 2009

johnjohn2
  • 5763 Answers

SOURCE: Engine code states cylinder 2 misfire. Replaced

sounds like a bad injector, just connection at the injector, also check for leaks at intake, one more thing , do a compression test on that cylinder start there, good luck.

Posted on Oct 24, 2009

  • 1244 Answers

SOURCE: 04 Pontiac Vibe bad gas mileage without a code and then the p0420

that code is from having the plugs wires reversed as you did and the o2 senors regrsitered the overload on gas emmions once you remove the battery cables for about 5 minutes and then recconect and run the engine it should be okay

Posted on Jan 19, 2010

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