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Misfire po300 - 1996 Plymouth Neon

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Codes PO300-PO305 TCS and emission lights on, runs OK except sl rough at lower speeds


you have multiple misfire po300 and cylinder 5 po305 misfire.the misfire is causing the rough running.The computer has disabled your traction control.You either have carbon in the EGR which simulates a vacuum leak,bad spark plugs,a leaking intake manifold,or low fuel pressure from a bad pump or clogged filter.
i would start with the spark plugs and fuel filter

Apr 21, 2015 | 2001 Honda Odyssey

1 Answer

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

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Misfire po300


Google it--OBD PO300

Random Cylinder misfires

Going to have to road test with scan tool,
to look at all data & component test,like you
do on all vehicle problems

Aug 24, 2014 | 2001 Oldsmobile Alero

1 Answer

2001 grand Cherokee. Code P0300


po300 is a random misfire, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why. If it was a po302 this means its #2 cylinder thats misfiring,ETC, But po300 could be any one of the cylinders. check plugs, wires, fuel injectors, Etc. Good-Day!

Jul 31, 2014 | 2001 Jeep Grand Cherokee

1 Answer

I'm trying to find out what po303 and po300 means


P0300: Random/Multiple Cylinder Misfire Detected
P0303: Cylinder 3 Misfire Detected
It looks like cylinder 3 isn't firing properly.

Apr 22, 2013 | Cars & Trucks

1 Answer

Po300 code multi cyl misfire any sugg


The code you got may not have indicated the correct coil, that was bad

I would put the old coil back in #6 & either walk the new coil to another cylinder, or get professonal help in the form of a scan tool in Mode $06,
if applicable on your vehicle & check for misfires that why

Forget the PO300

Jul 30, 2012 | 2004 Chevrolet TrailBlazer

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

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