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hello all , I discovered today ,after trying to start this car . that it will start up and run without the fuel pump fuse ,# 17 , in. will not start with it in. pull fuse and it starts and runs for about a minute. put fuse back in , fuel pump primes but wont start, it acts like it wants to but wont, pull fuse it starts and runs a little ruff for a minute then I guess it runs out of fuel .anyone have any ideas ?
Sounds like your engine is "flooded". For whatever reason the fuel system is running super rich. When you pull the fuel pump fuse now the engine will pump out the extra fuel and run for a minute..till all the extra fuel is gone. Reinstall the fuel pump fuse and the engine goes rich and "floods" again.
Could be the temp sensor G62 is defective or un-plugged..Air Mass Meter may be up-plugged. Something like that. Normally if the temp sensor is un-plugged or the sensor is defective the ECU will make some corrections so the car will run..but check G62 anyways.
Could be your fuel pressures are too high too. A defective fuel pressure regulator (could be plugged with rust) will make the engine run super rich.
ok ,so I pulled the ect sensor to get better access to test it and it is way out of range. fpr seemed to be fine no dirt or debris, new fuel filter a while back. ordered ect. from FCP and will post results when installed. wish me luck.
new ect and air cleaner in ,car started with fuel pump fuse in,ran rough but seemed to be clering up slowly ,tried to give it a little gas and it shut off .now its back to the same thing. pulled a 2332 code g108 o2 sensor which I had pulled b4 but then it cleared itself of that .
Still do the longer run with #17 fuse pulled? If so..do look at the spark plugs..they may be fouled. Any way you can check the fuel pressures? And the fuel volume..the tests are in the Bentley.
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1995 A6 quattro 2.8 12v 5 speed
