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I have a constant misfire number 2 cylinder on a 2003 Dodge Ram I have replaced the oil to fuel injector and the spark plug and still get a misfire code what do I do

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  • Contributor
  • 16 Answers

CHECK TO SEE IF THE TRUCK HAS A IGNITION CONTROL MODUEL OUR DOES EACH SPARK PLUG HAVE A COIL PACK BUT IF YOU HAVE A DISTIRUBTOR HERE IS A ROTOR AND COIL PICK UP INSIDE THE CAP AND ALSO TRY SCANNING THE CAR TO A SHOP THEY HAVE BETTER SCANNERS AND CAN PIN POINT PROBLEMS WITH MORE ACCURACY. IF THE MOTOR IS A 318 CHANGE THE CRANK SENSOR IF YOUR LOOKING AT THR MOTOR IT ON L/S LOOK BACK AT THE BELLHOUSING FOR TRANS YOU WILL SEE A SENSOR THAAT IS THE CRANKS SENSOR THAT CAN CAUSE THAT TOO HOPE THIS HELPS

Posted on Dec 04, 2014

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Posted on Jan 02, 2017

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  • 81 Answers

SOURCE: cylinder 3 misfire

Make sure you're using the recommended spark plugs. When my car did that, I had put Bosch Platinum Plus-4 plugs in and got that same problem. Turns out the plugs are too hot and cause it to fire prematurely and kick the misfire code.

Posted on Jul 24, 2008

StormStrikes
  • 104 Answers

SOURCE: engine misfires

You didnt mention having changed the spark plug wires, so that is another item that could be culprit as well. As well, it could be a coil pack that is not working properly.

I cannot recall at the moment if that model year uses coil on plugs or if it uses coil packs. Either way, if it uses a coil on plug set up, take the one for the #3 cylinder and move it to say #4 or anyone of your choice and see if the misfire follows

If it uses coil packs, there is likely one coil pack that controls two cylinders. In that case just swap the coil pack with an adjacent one and see if the problem follows. Pay attention to where the spark plug wires go because it will be an issue if you get them mixed up. You just swap the coil packs around.

I would, however, start with the spark plug wires if you have not changed them already.

Posted on Dec 31, 2008

Selvol
  • 115 Answers

SOURCE: Misfire with error codes P0300,P0302,P01303, P0102, P0748

Have you tried new Spark Plugs? Also after removing the plugs.
Take a paper towel and roll it up so it is like a long thick pencil. Stick that down the hole the spark plus came out of. Just to clean the moisture out. Also blow some compressed air down the hole.
Make sure all the moisture is out. The put the plugs in.
When you wash you car. Be careful if you wash the engine.
Dont let water get in to the plug holes..

Posted on May 21, 2009

  • 14036 Answers

SOURCE: 2001 Galant ES-V6 DTC is P0304 - Cylinder #4 misfire

look for weak valve springs.

Posted on Jun 22, 2009

  • 21 Answers

SOURCE: MISFIRE CYLINDER #3 CHECK ENGINE LIGHT COMES ON VEHICLE

Check spark plug wires for corrosion

Posted on Aug 27, 2009

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1 Answer

#2 cylinder misfiring why?


Usually if you know which cylinder, you check spark--fuel--compression on that cylinder.
You could do cylinder balance test, engine idling, kill each cylinder, one at a time. If you kill a cylinder that has no effect on rpms, that cylinder is dead for some reason, spark--fuel--compression?
I usually kill spark and do it quickly.

Jul 14, 2017 | 1999 Dodge Dakota

3 Answers

DTC P0302 code


The probable causes for DTC 0302 include:
1. Control unit software in need of updating
2. Faulty PCM ore ECM
3. Faulty fuel injector
4. Ignition system fault. Check ignition module, coil, spark plugs and wires. Have you checked/replaced all of these?
5. Fuel system problem

No doubt the last thing you check will be the problem. I checked for pertinent FSBs but found none.

Apr 28, 2014 | 2008 Dodge Durango

2 Answers

Cylinder 1 misfire 2003 chevy impala.. My car started running rough all of a sudden today. like the engine was shaking. took it to auto one said cylinder 1 misfire. what does that mean & what should i...


a number one misfire means that the number one cylinder is no longer working as good as it should or is not working at all. The number one cylinder is on the back side of the engine on the passenger side. 1-3-5 are the three cylinders in the back.

Three basic things can cause a misfire.
1. a bad spark plug wire
2. a bad spark plug.
3. a bad injector.

Remove the sparks plug wire from the spark plug and remove the spark plug. Inspect the inside of the wire and the outside of the plug to see if there is any carbon tracking. it will look like black lightning bolts. If there is any carbon tracking replace the plugs and wires.

Check the spark plug gap. It should be around .060". if its over .080" the plug is worn out.

Check for spark with a spark tester.

the fuel injector is a little trickier.

Start with the things above and let me know what you find and we'll go from there.

Sep 28, 2011 | Cars & Trucks

1 Answer

My 2003 Dodge Durango has hesitation when giving it gas and a misfire in cylinder 8. PO308 code. I have replaced all plugs numerous times (Champion Copper plus as recommended by the dealer). I have...


I had a dodge dakota that was misfiring at anything above 3000 rpm turned out to be the crank position sensor, next time it happened the truck would not start at all I replaced 2 crank position sensors over the time I owned it.

May 06, 2017 | Dodge Durango Cars & Trucks

1 Answer

99 dodge ram showing trouble code for number 2 cylinder misfire and the trouble code for number 8 injector circit what is wrong


the misfire on cylinder 2 may just be a fouled spark plug.on the number 8 injector circut try useing a ohm meter to see if the injector is bad.clear the codes and see if they return

Jan 21, 2011 | Dodge Ram Cars & Trucks

1 Answer

Giving a 300 and a 301 code where do i start sounds fine when started and then when you put in gear it start misfiring


P0300 - Random / Multiple Cylinder Misfire Detected

Possible Causes:
- Improper spark plug
- Insufficient compression
- Incorrect fuel pressure
- The injector circuit is open or shorted
- Fuel injectors may be faulty
- Intake air leak

Possible Solutions:
- Perform Injector Service
- Replaced Spark Plugs
- Replaced Injectors
- Replaced Ignition Coils

P0301- Cylinder Number 1 Misfire Detected

Possible Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak at cylinder

Possible Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

Most likely your issue is with cylinder number 1. Follow the info I have provided and you should be able to solve this issue.

Jan 14, 2011 | 2002 Toyota Tacoma

1 Answer

What is a p0307 code on a dodge truck 1500 5.7 hemi 2004 the truck is missing on one cyl.


P0301-P0308....2T catalyst........2004-05 Ram...Cylinder 1-8 Misfire Detected Conditions: Any time engine is running and the adaptive numerator has been successfully updated. When more than 1.5% (300M, Magnum), 2% (Durango, Ram), 2.5% (Durango LEV, Ram LEV), misfire rate is measured during 2 trips, or with 10-30% misfire during 1 trip. 3 good trips required to turn off MIL. Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed. Hope this helps you. Thank You for using fixya.If you like this solution please rate it....Thank You, iluv2fish....Ray

Jun 24, 2010 | 2004 Dodge Ram 1500

1 Answer

Cylinder 3 misfire


Misfire codes (including P0301, P0302, P0303, P0304, P0305, P0306, P0307 & P0308) indicate that there is a misfire in a cylinder, the last number indicates which cylinder has the problem. If something is causing a miss in random cylinders or is affecting all of them, a P0300 misfire code will be stored in the car's computer. It's always smart to begin with the basics. Also consider the mileage and service history when diagnosing a misfire. Higher mile vehicles are more inclined to have mechanical issues with the engines, like low compression from worn valves or rings etc. Any accompanying codes should also be considered in case they may be related. If the spark plugs are worn (excessive gap) or the car is past due for a tune up, it may be smart to go ahead and start with spark plugs and spark plug wires and go from there.
The most common misfire causes on the cars I've worked on have been:
  1. Spark plugs
  2. Spark plug wires
  3. Ignition coil
  4. Fuel injector
  5. Wiring to fuel injector
  6. Timing Belt (if eqipped)
  7. Vacuum leak or stuck open EGR
  8. Contaminated fuel or bad fuel pump
  9. Weak compression
  10. Blown head gasket

May 30, 2010 | 2004 Dodge Ram 1500

1 Answer

Odb 0308 - misfire #8 odb 0300 - random


Look at the spark plug, if looks ok then that's not the problem.with spark plug out check cylinder compression if good then check fuel injector, reinstall spark plug, start engine and listen for clicking noise at fuel injector, if none bad injector replace.

May 14, 2010 | 1997 Dodge Ram 1500 Club Cab

3 Answers

Check engine light


A multi misfire may mean that one or more of the following has happened:
Faulty spark plug or wires, Faulty coil (pack), Faulty oxygen sensor(s), Faulty fuel injector(s), Stuck/blocked EGR valve / passages, Faulty camshaft position sensor, Defective computer.

The engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wire, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the the problems were faulty fuel injectors. 

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

Good luck and hope this information helps, keep me posted, be glad to help you get the truck running 100% again. Not sure if your running a K&N air filter, and if you are there may be a flim of oil on the MAF sensor that is making you run lean. You may want to spray down the MAF sensor with a can of MAF cleaner. 

Jul 02, 2009 | 2004 Dodge Ram 1500

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