P0300 Misfire Help!
05-11-2020, 02:19 PM
#1
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P0300 Misfire Help!
Hello, I have an 04 350z, 140,000 miles and has been giving me some trouble lately. P0300 random misfire detected code is showing. I have already changed
-Spark Plugs
-Valve Covers & Gaskets
-Camshaft Position Sensor (Driver & Passenger)
- Crankshaft Position Sensor
-New Coil Pack
Once I changed the sensors, I noticed right away that there was more power and acceleration in the car, but it was not fully fixed. When I put my pedal to the floor, it would stutter a little bit and not give the full acceleration. I've been driving it all day and the SES light was flashing back on again. I need some help, as I already spend $1,000 on parts and labor and still have the same problem. I am thinking of doing coil packs next, anyone have any ideas? Thank you in advance.
-Spark Plugs
-Valve Covers & Gaskets
-Camshaft Position Sensor (Driver & Passenger)
- Crankshaft Position Sensor
-New Coil Pack
Once I changed the sensors, I noticed right away that there was more power and acceleration in the car, but it was not fully fixed. When I put my pedal to the floor, it would stutter a little bit and not give the full acceleration. I've been driving it all day and the SES light was flashing back on again. I need some help, as I already spend $1,000 on parts and labor and still have the same problem. I am thinking of doing coil packs next, anyone have any ideas? Thank you in advance.
Last edited by Jacob K; 05-13-2020 at 09:32 AM.
07-21-2020, 02:27 AM
#2
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Location: Chicago
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Hello, I have an 04 350z, 140,000 miles and has been giving me some trouble lately. P0300 random misfire detected code is showing. I have already changed
-Spark Plugs
-Valve Covers & Gaskets
-Camshaft Position Sensor (Driver & Passenger)
- Crankshaft Position Sensor
-New Coil Pack
Once I changed the sensors, I noticed right away that there was more power and acceleration in the car, but it was not fully fixed. When I put my pedal to the floor, it would stutter a little bit and not give the full acceleration. I've been driving it all day and the SES light was flashing back on again. I need some help, as I already spend $1,000 on parts and labor and still have the same problem. I am thinking of doing coil packs next, anyone have any ideas? Thank you in advance.
-Spark Plugs
-Valve Covers & Gaskets
-Camshaft Position Sensor (Driver & Passenger)
- Crankshaft Position Sensor
-New Coil Pack
Once I changed the sensors, I noticed right away that there was more power and acceleration in the car, but it was not fully fixed. When I put my pedal to the floor, it would stutter a little bit and not give the full acceleration. I've been driving it all day and the SES light was flashing back on again. I need some help, as I already spend $1,000 on parts and labor and still have the same problem. I am thinking of doing coil packs next, anyone have any ideas? Thank you in advance.
06-22-2021, 04:15 AM
#3
If you can get access to a scanner try to look at the live data . If your misfires occur on 1 3 5 or 2 4 6 cyl. The side its happening on could have a bad 02 sensor. If it is all over the place could be an intake gasket. Spray some carb clean around the intake on a cold but running engine If idle changes that's your problem.
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