Audi A4 Cylinder 3 Misfire

Something is causing cylinders to misfire at random which is a lot less cut and dry than a cylinder specific misfire code. Decat and intake pipe so not sure that would cause a misfire.

Cylinder 3 Misfire Audiforums Com

This bulletin applies to 2008-2014 Audi A3 A4 TT A5 A5 Cabriolet and Q5 and 2012-2014 A6 vehicles.

Audi a4 cylinder 3 misfire. 2009 Audi A4 20T Quattro B8 Misfire in Cylinder 3 and random misfire in 4 at idle. If the problem persists more tests needs to be done to diagnose problem see Possible Causes. Answered by Honest John.

Markbooker95 Verified VCDS User. This is a 2001 Audi Quattro with a misfire on cylinder no 12 and 3 on bank 1 watch the video and see what I found. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 3.

P0303 is a generic diagnostic trouble code DTC indicating an issue with the firing of cylinder 3. Cylinder 3 Misfire Detected. The P0300 Audi trouble code will trigger the A4s service engine soon light.

But the one new spark plug did help it. Cylinder 4 is misfiring. All ignition coils replaced new spark plugs replaced Coolant Temp sensor repaired crankcase vacuum hose.

Anyhoo its booked in at audi for free coilpacks so I assume they are the originals which have lasted 126k. An injector a sparkcoil. This DTC indicates that one or multiple cylinders are misfiring but the ECU fails to identify the cylinder.

The P0303 code means that the cylinder 3 is misfiring or is randomly misfiring. Car still sounds like is messed up and is shaking. Code P0303 is a misfire code for cylinder 3 Possible spark plug wirecoil or injector problem.

This code may be seen with other misfire codes as well as lean rich condition codes. Audi A4 Q missfire fix - YouTube. Theres a list of things that will affect three cylinders.

What the P0303 code means. 2006 Audi A4 20t P0300 P0303 Misfire Part 1P0300 - Random Cylinder MisfireP0303 - Misfire on Cylinder 3Didnt have much background on the car. Replaced all six and now p0304 is misfiring drives fine at low speeds but with more exceleration the car does.

Put in a different coil didnt really help. If the coking up is not too bad then there is a good chance that will clear it up. A6 30 TDI quattro2005 Audi A6L2005 Audi A4 DTM Edition2005 Audi A4 Cabriolet2005 Audi A4 Avant 32 quattro2005 Audi A4 32 quattro2005 Audi A4 30 TDI quattro2005 Audi A4 20T2005 Audi A3 20 TDI 3-door2004 Audi S4 Cabriolet2004 Audi RSQ Concept2004 Audi RS6 plus2004 Audi A8 L 6.

A4 P0300 OBDII Code Symptoms. A MIL may be on with P0300 andor P0301 P0302 P0303 P0304 cylinder misfire detected along with a rough idle. The P0303 DTC is set when the ECU detects multiple misfires from cylinder 3.

Code P0304 is shown. Changing coils and plugs didnt. Issues with my 2003 A4 30.

Misfires cause the ECU to set the Check Engine Light. Engine light is still flashing. I was told no.

The P0303 code means that the cylinder 3 is misfiring or is randomly misfiring. It started with me changing all the coils and plugs myself and inspecting the PCV valve after my first CEL was thrown for random misfires on multiple cylinders also got misfire codes for cylinder 34. P0303 is a cylinder specific misfire code which means that Cylinder 3 is misfiring and causing the code.

Light came back on replaced Evap purge Valve and then replaced one Catalytic converter Bank 1 due to it being under threshold. P0141 bank1 sensor2 is the upstream oxygen sensor this code may have been set by the misfire of Cyl 3 the lean condition is being cause by the misfire. A camshaft position sensor.

2000 Audi A3 18T Sport AUM K03SSecond ownerForge 007pCM TIPYellow DogbonePipercross panelStage1MapSOLD August 2014. 09 Audi A4 32L Quattro p0302p0303 kept misfiring was told I need new fuel injectors. The easiest possible answer to this is to run some fuel system cleaner through by adding to the tank then running exclusively on Shell V-Power Nitro.

If no leak are found the next step is to replace the spark plugs. Start date Oct 17 2019 Oct 17 2019 1. Audi A4 P0303 Definition.

What I dont understand is why the misfire was on two cylinders. PCV valve was good. Start by checking for intake leaks intake gaskets are common caused of multi-cylinder misfiring.

What does this mean. When found in 2008-2013 A3 TT and 2009-2013 A4 A5 Q5 and A6 vehicles with the 20l TFSI EA888 engines it maybe necessary to Reset the Misfire Adaptions. Theres a list of things that will affect a single cylinder.

An important thing to understand when finding the location of cylinder 3 is that its going to be the 3rd cylinder in the firing order of the vehicle and not the 3rd cylinder that you might see when looking at the engine. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 3. The engine may have reduced performance without significant loss of power or stalling.

Put in a new spark plug in cylinder 4 it runs better but still throws code and misfires. But its been misfireing in cylinder 3 at idle and randomly will misfire in 4. Took car to Audi for engine light they found misfires on cylinders 4 5 and 6.

On October 18 2016. If the problem persists more tests needs to be done to diagnose problem see Possible Causes. P0300 is a general and random misfire code which means that the code is not going to tell you which cylinder is causing the misfire.

The P0300 code means that a cylinders is misfiring or is randomly misfiring. The vehicle itself may begin to run. If the problem persists more tests needs to be done to diagnose problem see Possible Causes.

But this was two cylinders not one.

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