Question about 1997 Oldsmobile Cutlass Supreme

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Code PO 300 Random misfire vehicle stalls but will restart

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This could very well be caused by a bad fuel injector. I had this exact problem with my '96. I to thought of the coil because I had them replaced previously. But with further diagnostics it was determined that the no 3 injector was malfunctioning.

Posted on Aug 10, 2009

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Replace the coil pack.

Posted on Jul 19, 2009

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redbeard00
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SOURCE: Engine Random Misfire code PO-300

P0300 is for random miss-fire, loose or defective gas-cap, water in the fuel, damaged vacuum line, clogged fuel and/or air filter, faulty plugs and/or wires, fuel injectors. These are more common reasons, there are others but this a good start.

Posted on May 15, 2009

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1 Answer

What does po 305 cylinder 4 misfire mean? Po 316 misfire on startup? po 300 random misfire? Po 305 Cylinder 5 misfire?


Hi Micaela:
I'd be looking for ignition problems like shorting out spark plug leads or a bad distributor cap. Try running it in a really dark place and see if you can see sparks around the plug wires.

May 13, 2015 | 2004 Ford Explorer Sport Trac

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PO 171 and PO 300 CODE GMC ENVOY


the sensor to replace is the HO2S sensor which is different to an O2 sensor. (has a different function)
code p0300 is random/multiple misfires
as misfires are from the electrical components you did not pay attention to items like low fuel pressure and faulty injectors which also cause random misfires.

Feb 21, 2015 | GMC Envoy Cars & Trucks

1 Answer

Po 300 code


That's a random misfire. It could be bad plugs, wires, coils, intake gaskets and a whole lot of other things. You need to have that diagnosed by a mechanic. The cause of my po300 code was a bad intake gasket found by the random misfire of cylinders 1 and 2 so it was at the front of the vehicle the mechanic spayed something around the front of the intake and the rpm's increased. bad gasket sucking to much air into those cylinders and causing a false misfire. I say false cause it did fire the gasses produced where not right the computer did not like the extra air

Jan 25, 2014 | 1999 GMC Sierra

1 Answer

Car stalls after 30 min driving an wont start for about 45 min im getting a 0171 & 0300 code


PO-300 Random/Multiple Misfires

PO-171 (Bank #1) Too Lean --- O2 Sensor

Work on the Ignition Misfires first

The O2 Code may be a result of the misfire,
unless they are over 100,000 miles, then change them

Jul 18, 2012 | 1997 Buick LeSabre

1 Answer

What is this code p0300 for suzuki forenza 2004


PO 300 --- Random or Multiple Misfires

The code it's self doesn't do anything for you
other than to look at misfire data & possibly
5 or 6 other things/items on different systems,
to determine what is going on with the vehicle
& when ,under what conditions

That said, you have to be knowledgeable as to
how OBD2 Systems works

For 99.9% of all people, a repair shop is your next stop

Jul 30, 2011 | 2004 Suzuki Forenza

1 Answer

Po 300 po 302 po305 just cumup on the daughters ride


these indicate a misfire on cylinders 2 and 5 the code 300 is random misfire.does the car need a tune-up plug,wires, the fuel injection system need cleaning,also there could be a intake vacuum leak with the intake gasket leaking causing the misfire near these cylinders.

Apr 10, 2011 | 2000 Chrysler Concorde

3 Answers

Have code po 300 po302 po313


P0300 random misfire detected
P0302 cyl # 2 misfire detected
P0313 Misfire Detected with Low Fuel

May 05, 2010 | 2002 Mini Cooper

1 Answer

99 Silverado code PO 300 what causes it? What parts needed to fix


p0300 is a random misfire. A scanner will need to tell the primary cyls that have problems. A (qualified) repair shop will need to check it. Could be from vac leaks, to fuel pressure, to spark problems????/

Dec 16, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Engine Random Misfire code PO-300


P0300 is for random miss-fire, loose or defective gas-cap, water in the fuel, damaged vacuum line, clogged fuel and/or air filter, faulty plugs and/or wires, fuel injectors. These are more common reasons, there are others but this a good start.

May 15, 2009 | 2001 Mitsubishi Diamante

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