Help misfire
#2
11-22-2013 | 08:43 PM
Super Moderator
Joined: Sep 2009
Posts: 2,648
From: Stoke on Trent, England
Welcome to the forum. 
Excuse me but why would your wife put oil in the car while it was running, has no one ever told her what to do?
You need to get your motor scanned for any error codes logged in the ecu and post them, else there is a lot of guessing.
https://volkswagenforum.com/forum/ne...gnature-34185/
Excuse me but why would your wife put oil in the car while it was running, has no one ever told her what to do?
You need to get your motor scanned for any error codes logged in the ecu and post them, else there is a lot of guessing.
https://volkswagenforum.com/forum/ne...gnature-34185/
#4
11-25-2013 | 09:12 PM
Super Moderator
Joined: Sep 2009
Posts: 2,648
From: Stoke on Trent, England
VAG Error Code: 16684
EOBD II Error Code: P0300
EOBD II Error Code: P0300
Fault Location:
Random/Multiple Cylinder(s) - Misfire Detected
Random/Multiple Cylinder(s) - Misfire Detected
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Lack/loss of power.
Hard start.
Engine hesitation.
Malfunction Indicator Lamp (MIL)(K83) active.
Lack/loss of power.
Hard start.
Engine hesitation.
Air Intake System leaking.
Fuel Supply faulty.
Injector(s) faulty.
Ignition Cable(s) and/or Spark Plug(s) faulty.
Ignition coil(s).
Exhaust Gas Recirculation (EGR) Valve (N18) stuck/open.
Camshaft Position Sensor (G40) faulty.
Low compression.
Wiring/Connector(s).
Fuel Supply faulty.
Injector(s) faulty.
Ignition Cable(s) and/or Spark Plug(s) faulty.
Ignition coil(s).
Exhaust Gas Recirculation (EGR) Valve (N18) stuck/open.
Camshaft Position Sensor (G40) faulty.
Low compression.
Wiring/Connector(s).
Possible Solutions:
Check Misfire Recognition.
Check Air Intake System.
Check Fuel Supply.
Check Injector(s) and Injector Sealing.
Check Ignition Cable(s) and Spark Plug(s).
Check Ignition Coil(s).
Check Exhaust Gas Recirculation (EGR) Valve (N18).
Check Camshaft Position Sensor (G40).
Check cylinder compressions.
Check Misfire Recognition.
Check Air Intake System.
Check Fuel Supply.
Check Injector(s) and Injector Sealing.
Check Ignition Cable(s) and Spark Plug(s).
Check Ignition Coil(s).
Check Exhaust Gas Recirculation (EGR) Valve (N18).
Check Camshaft Position Sensor (G40).
Check cylinder compressions.
Special Notes:
This Diagnostic Trouble Codes (DTC) indicates that one or multiple cylinders are misfiring, but the ECU fails to identify the cylinder.
This Diagnostic Trouble Codes (DTC) indicates that one or multiple cylinders are misfiring, but the ECU fails to identify the cylinder.
Tech Notes:
The P0300 code means that a cylinder(s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. If no leak are found the next step is to replace the spark plugs. If the problem persist more tests needs to be done to diagnose problem.
The P0300 code means that a cylinder(s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. If no leak are found the next step is to replace the spark plugs. If the problem persist more tests needs to be done to diagnose problem.
When is the code detected?:
The control module monitors the crankshaft speed and has detected a misfire condition.
The control module monitors the crankshaft speed and has detected a misfire condition.
Description:
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.
P0302, P0303 are going to be the same only a different cylinder.
VAG Error Code: 16685
EOBD II Error Code: P0301
Fault Location:
Cylinder 1 - Misfire Detected
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Lack/loss of power.
Hard start.
Engine hesitation.
Lack/loss of power.
Hard start.
Engine hesitation.
Wiring/Connector(s).
Ignition system.
Fuel injectors.
Fuel pressure.
Running out of fuel.
EVAP canister purge valve.
Evaporative emission system.
Low compression.
Base engine problems.
Engine Control Module (ECM).
Fuel injectors.
Fuel pressure.
Running out of fuel.
EVAP canister purge valve.
Evaporative emission system.
Low compression.
Base engine problems.
Engine Control Module (ECM).
Special Notes:
This feature search for engine misfire in a specific cylinder. Most of the time the cause for a misfire is a lack of combustion in a cylinder due to absence of spark, poor fuel metering, or poor compression.
Tech Notes:
The P0301 code means that the cylinder 1 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 1. If the problem persist more tests needs to be done to diagnose problem.
When is the code detected?:
Engine Cylinder 1 is misfiring.
Description:
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.
VAG Error Code: 16486
EOBD II Error Code: P0102
Fault Location:
Mass Air Flow (MAF) Sensor (G70), Bank 1 - Low Input/Short Circuit to Earth
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Engine stall.
Engine running rough.
Excessive fuel consumption.
Excessive smoke.
Engine stall.
Engine running rough.
Excessive fuel consumption.
Excessive smoke.
Intake leak.
Air filter blocked.
Wiring/Connector(s) short to earth.
Fuse(s).
Mass air flow (MAF) sensor (G70).
Mass Air Flow (MAF) (G70) defective.
Dirty Mass Air Flow (MAF) Sensor (G70) air filter.
Wiring/Connector(s) short to earth.
Fuse(s).
Mass air flow (MAF) sensor (G70).
Mass Air Flow (MAF) (G70) defective.
Dirty Mass Air Flow (MAF) Sensor (G70) air filter.
Possible Solutions:
Check Wiring/Connector(s).
Check / Replace Mass Air Flow (MAF) (G70).
Mass Air Flow (MAF) sensor signal < 66 µs
Check / Replace Mass Air Flow (MAF) (G70).
Mass Air Flow (MAF) sensor signal < 66 µs
Special Notes:
In MY 1995-2002 (?) in Europe at VW-diesel-cars G70 had the bad reputation of slowly losing his performance, causing loss of power. It's not a matter of defective or breaking down, but it is filthy / dirty (not easy to clean). You can check functionality by making a log in [01-engine], [meas.blocks-08], group 003 (3e gear, full throttle, from 1700-4000rpm).
Tech Notes:
Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.
When is the code detected?:
An excessively low voltage from the sensor is sent to Engine Control Module (ECM).
Description:
The Mass Air Flow (MAF) sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM).
The temperature of the hot film is controlled by the Engine Control Module (ECM) a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the Engine Control Module (ECM) must supply more electric current to maintain the temperature of the hot film as air flow increases. The Engine Control Module (ECM) detects the air flow by means of this current change.
As taken from my https://volkswagenforum.com/forum/ge...oftware-34973/
Thread
Thread Starter
Forum
Replies
Last Post
