Question about 2000 Pontiac Grand Am GT

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THE MOTOR HAS A MISFIRE PROBLEM , SO THE CODE PO300 COMES UP BUT OCATIONALLY THE PO301 COMES UP AND I WOULD LIKE TO ADDRESS THE PROBLEM ALONG WITH THE MISFIRE ISSUE . WHAT COULD IT BE ? I'VE DONE A BLOCK TEST TO CHECK FOR EXHAUST GASES IN THE COOLANT SYSTEM WHICH COULD BE A HEAD-GASKET BUT IT CHECKED OUT FINE . ALSO NEW PLUGS AND WIRE'S. THERE IS 237000KM ON THE MOTOR.ON AN ANNILIZER IT READS CYLINDER NO. 1 IS THE PROBLEM BUT THE ADJOINING CYLINDER ON THE COIL IS FINE SO I DON'T THINK IT'S THE COIL. PLEASE HELP .

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Pull the spark plug wires off the coil packs and look for any corrosion on the posts, common problem. doesnt matter if the adjoining cylinder is ok.

Posted on Nov 12, 2009

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2003 acura tl error codes po301 po302 po304 po306 p1399 po300


PO300 and P1399 are random cylinder misfire detected.
PO301 cylinder 1 misfire
PO302 cylinder 2 misfire
PO304 cylinder 4 misfire
PO306 cylinder 6 misfire
I would say that you have damage to the ignition wiring harness or you ECM is failing.

Feb 17, 2015 | Acura Cars & Trucks

2 Answers

I have a 1996 crown vic i need to know these trouble codes po301 po304


PO300 Codes-- are cylinder misfires

PO301 thru PO308

Last # is the cylinder

Could be bad ignition coil for a cylinder
or a coil pack for that side,depending what
engine you have

#1 &#4 are at the front & back of the passenger
side of your motor or firewall side if transverse

You will need to provide details of who worked on it
& exactly what was done besides replace a coil based
on a code

Codes aren't very good with COP Ignition but a complete
coil pack on one side should take care of some issue

Vacuum Leaks & other items can cause misfires & the codes
don't tell you to replace ignition parts as you may have

Feb 14, 2013 | 1996 Ford Crown Victoria

1 Answer

2008chevy malibu misfire


Which code you have po300 or po301.po302 .PO301,PO302 will be coil or module.PO300 could be bad spark plugs,vac. leak,clog fuel filter,bad fuel pump,bad battery.

Feb 04, 2013 | 1996 Ford Crown Victoria

3 Answers

CODES-PO301-PO303-PO316- CHANGED PLUGS & WIRES. STILL MISS ON START UP, GOES AWAY MOST OF THE TIME ABOVE 1000 R.P.M


P0301 - Cylinder 1 Misfire Detected.

Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak

Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

P0303 - Cylinder 3 Misfire Detected.
Follow info from P0301.

P0316 - Misfire Occurred In The First 1,000 Engine Revolutions.

Causes:
- Damaged CKP sensor.
- Ignition System.
- Fuel Injectors
- Running out of fuel
- Fuel Quality
- Base engine
- Damaged Powertrain Control Module

Solutions:
Usually the P0316 is combine with a P03XX codes. The P03XX code indicates in which cylinder the misfire occurred.

Jan 17, 2011 | 2002 Mercury Sable

1 Answer

Check engine light came on and error codes were po300, po301 what are these


P0300 is "random misfire detected" and P0301 is "cylinder 1 misfire detected". I would start by checking the condition of your spark plugs and replace as necesaary. NGK or ND plugs are recomended.

Feb 24, 2010 | 1998 Toyota 4Runner

2 Answers

97 toy corolla DTC po300 po301 po401 po402


po300 random/multiple cylinder misfire detected po301 cylinder 1misfire detected po401egr flow insufficient po 402egr flow excessive

Feb 11, 2010 | 1997 Toyota Corolla

1 Answer

I have a diagnostic trouble codes p1768,po300,and a po420. what does this mean?


I have tow of the three requested codes. po300 is misfire detected at multiple cylinders. See po301-306 represent the cylinder # misfire. So 301 is cylinder #1 misfire.

po420 is Catalytic Converter Efficiency Failure

Oct 08, 2009 | 1996 Plymouth Voyager

1 Answer

Audi 2000,1.8 turbo,code po300,po301,po302


P0300 - Combination misfire detected
P0301 - Cyl 1 misfire
P0302 - Cyl 2 misfire

If it has a lot of miles it needs a tune up.
Fill tank with high quality premium fuel
Check fuel pressure

Sep 27, 2009 | 2001 Audi A4

1 Answer

2004 chev. silverado 6.0 liter. The engine code po300 and po322 came up. I reset the codes and po 322 came up again. I just changed the plugs approx. 400 mile ago. Could the codes come from a bad plug or...


Yes they could a PO300 is a generic misfire code. PO301 would be cylinder number 1 so on and so forth. check the resistance of your plug wires they should be approx. 7000 ohms per foot. it could also be a coil over plug. primary resistance of the cops should be 1-3 ohms. but since this is a misfire it would be your secondary. which should be between 20000-30000 ohms. hope I helped you out. Happy Motoring!

Jul 06, 2009 | 2004 Chevrolet Silverado 3500

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