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Help Please my Audi a4 2.0 petrol b6 model over heated on the way home from work broken pipe connector at back of engine fixed this now it wont fire up it turns over then fire for 2-3 seconds and sounds like a diesel i changed the spark plugs and cleaned the air flow meter also when it starts there is a lot of steam out of exaust can any one help please please
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IIf the vehicle is front wheel drive and now Quattro than then the transmission range sensor is located inside the transmission and is part of the mechatronics unit (valve body). If the vehicle isn't Quattro then the transmission range sensor is bolted to the drivers side of the transmission where the cable connectors to the shift lever. When these range sensors go bad that will cause the flashing or solid PRND light on the cluster.
I assume u have been maintaining your oil & the proper amount is in the motor. If so it may be an oil pressure switch going bad. The oil switch must be replaced.It is mounted on the side of the engine block w a wire connector to it. Google exact location
Fuel filter may be clogged, replace. Fuel pump may be failing, replace. Never let your vehicle "run out of gas" as all the residue collected in the bottom of the gas tank, will migrate through the system and create problems.
I am having the same problem on my Audi A4 2004 FSI, lose power whilst driving at speed with the EPC light coming on. Looks like a design fault of some kind with Audi petrol engins, have read a few forums about this but no clear straight answer. Check the link below:
Firing order for 2003 (B6) Audi S4 4,2l V8 engine is: 1 - 5 - 4 - 8 - 6 - 3 - 7 - 2 Cylinder no.# 1 is first one from right front side of the car, and cylinder no.# 4 is the fourth one (front to rear) on the right bank of cylinder block. See picture below:
There are two things to check. 1.It is producing a spark. 2.It is getting petrol through.
To check whether isproducing a spark.
Remove one spark plug from engine. Reconnect HT lead and hold it touching car chassis and turn the engine. Do no hold the Ht lead with bare hands while doing this as it carries thousand of volts and will give you nasty shock. Hold it with some insulted material .
When you turn the engine you see spark across the plug electrodes.
As for fuel,trace the fuel pipe coming into the carbureter and disconnect pipe and have someone turn engine .Petrol should gush out showing that the petrol pump is working.
This i think is a problem with the air getting into your engine.. If you look under the bonnet.. there is a tibe of tube or pipe. It pumps air into the engine for the petrol to ignite.. Its easy to locate.. There is likely a split or hole in it where air escapes.. You can glue it together or tape it up but this fix is only temporary as the split will get larger. its ok in 3rd because the air is being fired in at a much higher rate. But you would be loosing around 10 to 15 horsepower. Check the pipe anyway.
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