Question about 1999 Dodge Caravan

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144k on the 1999 dodge caravan and getting a check engine light, Connected code reader and got generic code p0300 "random/multiple cylinder misfiredetected" What now?

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  • Dodge Master
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POSSIBLE CAUSE CAN MANY THINGS.ASD RELAY OUT PUT CIRCUIT FAULT - CLOGGED FUEL INJECTORS.STOPPED UP FUEL FILTER.FAULTY FUEL PRESSURE REGULATOR OR WEAK FUEL PUMP.FAULT IN THE IGNITION WIRING OR COIL CONTROL CIRCUIT OR COIL FAULT.YOU COULD HAVE A VACUUM LEAK AT THE INTAKE MANIFOLD GASKET.

Posted on May 05, 2010

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  • Master
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Replace the spark plugs and plug wires unless you have already done so. Also check all vacuum hoses for leaks. After doing this post back if you still have the same issue. Remember to replace the plug wires or vacuum hoses one at a time as to not get confused. This will more than likely solve your random misfire. Reset the light after the repair with your scanner.

Posted on May 05, 2010

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Posted on Jan 02, 2017

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1 Answer

I get engne code p0300 what does that mean and what do i do already changed plugs and wires


check the coil, Normally when that code comes up its followed by more, as in P0301 02 03 , which would indicate which cylinder is being effected, P0300 Random/Multiple Cylinder Misfire Detected is what the code means and any of these could effect that code being thrown
  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor
  • Defective computer

Jul 10, 2011 | 1999 Dodge Grand Caravan

2 Answers

I have 1999 alero with a 3400 what does code P0300 mean and what does it cause the car to do


P0300....Random/Multiple Cylinder Misfire Detected

ask local mechanic to have a look for you ,could just be a cold damp engine or snow blown under the bonnet

Dec 03, 2010 | Oldsmobile Alero Cars & Trucks

1 Answer

I have a 02 dodge caravan with a check engine light my husband said the code coming up is p0300 what that?


random misfires.

Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

Nov 09, 2010 | 2001 Dodge Durango

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Engine is chocking by aplying on gas, did plug code reader the code is P0300 01/09 pls help


p0300--random/ multiple cylinder misfire detected. could be plug wires plugs coils etc.

Oct 31, 2010 | 1996 Dodge Ram 1500 Club Cab

1 Answer

Engine light comes on - Code shows P0300 and then


OBD II 300 Random/Multiple Cylinder Misfire Detected

When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code. For instance cylinder 1 misfire is P0301, cylinder 2 is P0302 etc. In this case we have either multiple cylinders misfiring, or the computer simply can't determine the specific cylinder, and as such we are left with the P0300 in computer memory.

Possible Causes:

Fuel injectors, related wiring, sensors and computer issues
Running out of gas, or poor fuel quality
Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
Incorrect Fuel Pressure
EGR system concerns: leaking EGR valve or restricted ports
Base engine concerns: low compression, valve train problems and timing issues
Ignition system concerns including, but not limited to:
Faulty spark plugs
Faulty coil or related wiring
Ignition module or related wiring issues
Ignition related sensor faults or wiring issues

Apr 04, 2009 | 1996 Dodge Ram 1500 Club Cab

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Fault code I believe is p0300


P0300 is a misfire that the engine computer hasn't or can't pinpoint to a specific cylinder yet

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