Question about 2003 Nissan Murano

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My '03 Murano runs rough. At idle and during acceleration. I checked the code and it reads P0300 (Multiple Cylinder Misfire). I plan to bring it to the dealer next week, but would rather fix it myself if possible. Help!! Thank you, Brent

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Try to replace sparks and high-voltage wires.

Posted on May 20, 2011

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Posted on Jan 02, 2017

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3.9 engine is idling rough but smooth when accelerating or driving. If I put in neutral it's still rough. Have 250000 thinking maybe injectors? Or where do I start?


Take an have diagnostics run . Could be a vacuum leak , mass air flow sensor problem , If fuel injector's where the problem it wouldn't smooth out while accelerating > Have fuel trims check , O2sensors . EGR valve stuck open a little . If the check engine light was on an had a random misfire code P0300 could be fuel injector. or a specific cylinder misfire.

Oct 02, 2016 | Cars & Trucks

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Starts up but runs rough, exhaust smells, and when you give it gas it wants to shut off.


How To Fix P0300 random misfire codes in your car ...

? 2:56
https://www.youtube.com/watch?v=OyvdWeyDHf4
Feb 5, 2010 - Uploaded by Scotty Kilmer
Scotty Kilmer, mechanic for the last 46 years and counting, shows how to fix your car if the check engine light ...

P0300 - OBD-II Trouble Code - RepairPal

repairpal.com > Encyclopedia > OBD II Codes
OBD II Fault Code. OBD II P0300. Fault Code Definition. Random, Multiple MisfireDetected. Symptoms. Check Engine Light flashing; Rough running, hesitation ...

P0300 - Check Engine Light Diagnostic Trouble Code ...

https://www.engine-light-help.com/P0300-check-engine-light.html
The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. The computer can also normally identify the ...

Random-Misfire Page

www.random-misfire.com/

Jan 24, 2016 | Cars & Trucks

1 Answer

I have a 98 chevy lumina with 61k miles.what can I do about these codes, P0300. P1381


P0300 is a random or multiple cylinder misfire, and P1381 is a misfire EBCM (Electronic Brake Control Module) or PCM (Powertrain Control Module) Since you mentioned replacing fuel components, it could be as simple as a fuel injector being clogged up causing a cylinder misfire. Have you checked your fuel injectors?

Jan 21, 2015 | Cars & Trucks

1 Answer

What is code p0300?


P0300 - Random, Multiple Cylinder Misfire Detected Fault Code Definition
  • Random, Multiple Misfire Detected
Symptoms
  • Check Engine Light flashing
  • Rough running, hesitation, and/or jerking when accelerating
  • In some cases, there may be performance problems, such as dying at stop signs or rough idling, hesitation, misfires or lack of power (especially during acceleration), and a decrease in fuel economy
Common Problems That Trigger theP0300
  • Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
  • Incorrect ignition timing
  • Vacuum leak(s)
  • Low or weak fuel pressure
  • Improperly functioning EGR system
  • Defective Mass Air Flow Sensor
  • Defective Crankshaft and/or Camshaft Sensor
  • Defective Throttle Position Sensor
  • Mechanical engine problems (i.e.-low compression, leaking head gasket(s), or valve problems

Jul 25, 2014 | 2000 Dodge Durango

1 Answer

Rough idle and poor acceleration


P0300 Random/Multiple Cylinder Misfire Detected
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Jan 28, 2013 | Cars & Trucks

1 Answer

Rough idle jetta 2001 1.8t when it's cold codes p0300 and p0302


p 0300 is random misfires and 0302 is no 2 cylinder misfire
most misfires are from dirty injectors rather than plugs
run a quality injector cleaner and see if there is improvement

May 03, 2017 | Cars & Trucks

1 Answer

2003 2500hd rough idle and hesitation o2 sensor and multiple cylinder misfire codes but seems to run ok under normal driving


Sounds like a defective knock sensor. These bring on multiple misfire codes with little change to performance. Check your oil level too, this can make knock detection codes come on unnecessarily. Hope this helped...

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DTC PO300 and PO506 engine won't idle when cold


CODE PO300 MULTIPLE ENGINE MISFIRE DETECTED CONDITIONS. CODE PO506 IDLE SPEED TOO LOW CONDITIONS.LOOKS LIKE THE IDLE SPEED CONTROL IS NOT WORKING.

Sep 04, 2009 | 2003 Pontiac Montana

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