Question about 2004 Audi A6

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How to replace the ignition coil

Engine power is low and misfires. Same issue I had when the coil went the last time. Can I replace this myself?

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You can replace this yourself.  do you have a code reader to figure out what cylinder is misfiring.  Coils fail all the time.  It is best to replace all at the same time.   Because these coils fail so often this is the best plan of action.  In order to get to the coils you must remove some stuff.  Assuming you have the 3.0 liter engine.  On the passenger side remove the airbox assy.  On the drivers side remove the coolant resovior.  
Don't unook the lines just take the phillips screw out and move out of the way.  Next on each side there should be 2 torx t15 little ***** screws holding the coil wires. Remove these screws.  Next get a screwdriver and carefully pry on the underside of coil to pry it up some.  Do this to each.  They are in there kinda tough so it will take some leverage.  Once you have them moved up some unclip the connectors from the coils.  Careful not to break the connectors.   Once the connectors are loose just pull the coils up.  Reassemble in reverse order.

Posted on May 29, 2009

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Posted on Jan 02, 2017

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Engine died while driving, no spark, replaced coil, now starts, idles, runs well at low rpm, but misfires when accelerating. No check engine costs thrown. What should I check next.


Change your ignition module. The distributor is a weak point of the Honda, I will always change out the whole thing than just try the coil.

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P0303 Flashing Service Engine Light when driving


P0303 ignition misfire on cylinder #3.
Possible Causes:

1.Fuel injectors, related wiring, sensors, computer issues
2. Running out of gas, or poor fuel quality
3. Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
4. Incorrect Fuel Pressure
5. EGR system concerns: leaking EGR valve or restricted ports
6.Base engine concerns: low compression, valve train problems and timing issues
7. 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

You will have diagnose each element until you find root cause.
And it could be more than one element faulting out.
You

Jan 27, 2015 | 2002 Nissan Pathfinder

1 Answer

Tengo el codigo p0306 saben que es


Hi there:
A misfire is nothing more than a lack of combustion, which can be caused by poor fuel quality or metering, low compression, lack of spark or unmetered air entering the engine. There are other possible, less obvious causes as well, such as uncommanded Exhaust Gas Recirculatin (EGR), flow. 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 are left with a P0306 in the 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



Other details could be find HERE.


Hope helps.

Feb 11, 2013 | 1999 Jeep Grand Cherokee

2 Answers

My 2003 ford expedition reads a code 0303= 3 cylinder misfire, which side of my vehicle would that be on and could replacing ignition coil and spark plug fix it and stop the lose of power and hesitation?


Third cylinder back on the passenger side. I'd recommend changing all 8 coils and spark plugs. These coils don't last long, and once one goes, more will fail soon after. This job also requires removing the fuel rail to gain access to the coil and plugs. I personally have the same SUV and went through the same issue!!

May 08, 2010 | 2003 Ford Expedition

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Engine misfire under load. Engine compartment


I think you have bad ignition wires.

Feb 12, 2010 | 2004 Mazda MPV

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1999 Nisian Maxima and need to know what codes mean?


P1320 Ignition Signal
Signal wire from distributor
P0325 Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
O2 senor ( The one before the cat converter )
P0300 Random/Multiple Cylinder Misfire Detected
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 specific cylinder in which the misfire has occurred. A misfire is nothing more than a lack of combustion, which can be caused by poor fuel quality or metering, low compression, lack of spark or unmetered air entering the engine. There are other possible, less obvious causes as well, such as uncommanded Exhaust Gas Recirculatin (EGR), flow. 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 13, 2009 | 1999 Nissan Maxima

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

2 Answers

99 Daewoo Leganza DTC P0301


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.

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 specific cylinder in which the misfire has occurred. A misfire is nothing more than a lack of combustion, which can be caused by poor fuel quality or metering, low compression, lack of spark or unmetered air entering the engine. There are other possible, less obvious causes as well, such as uncommanded Exhaust Gas Recirculatin (EGR), flow.



P0301:

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

P0302:

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 02, 2009 | 1999 Daewoo Leganza

1 Answer

Chech engine light code OMDII 300 vehicle back fires from stand still till speed 35 to 40 mhp 1998 corolla can you help


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

Mar 24, 2009 | 1998 Toyota Corolla

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