Urgent - Engine died and wont start

[Greg_S]

Guys,

Was on the way to bedford audi this morning to pickup a reverse light switch and the engine suddenly lossed power and died, simultaneously the 30 mile fuel warning light came on.

I thought I had run out of petrol so got a can full of petrol in but it still wouldnt start.

When you crank over it appears to start for about 1/2 second then die.

I was planning to start by checking the fuel pump and pulling fault codes which I am about to do now, but i need to get the car working asap.

Any advice would be very welcome

thanks

[Jamo]

Fuel Pump Relay? There is a wiring trick to test the if the relay has gone and just bypass it

[trackslag]

which engine have you got?

[trackslag]

my friend has same prob it turned out to be crank sensor just gave up that will stop spark, are you getting spark/fuel?

[Greg_S]

Its an ABY, will check the relay etc first and see if I can get it to work. Its the two hall sensors on the bell housing for the flywheel too isnt it?

[trackslag]

one is a speed sensor other is crank pick up, start with fuel then take a plug out rest it on rocker cover and check for a spark DO NOT TOUCH IT WHEN CHECKING!!!!!!!! it hurts so much!! ive never been same since hair always sticking up now

[Jamo]

It wouldn't start if it was the sensors IIRC as you wouldn't get spark as all 3 sensors have to be in the same window by the ecu.

The other issue could be fuel pump, you have a 044 do you not? deffo try bridging the relay and see if the pump activates

[s2_bo]

one is a speed sensor other is crank pick up, start with fuel then take a plug out rest it on rocker cover and check for a spark DO NOT TOUCH IT WHEN CHECKING!!!!!!!! it hurts so much!! ive never been same since hair always sticking up now

That explains your profile picture.

Good luck Greg, hope its something simple.

[Rocco]

did you check the rotatory part of the hall sensor???

a year ago my car my car does not want start and after some hours of looking for the problem we discovered that my rotatory part from the hall was BROKEN¡¡ it was in plastic..and now i have it in metal


good luck

[s2_bo]

ABY doesn't use that type of rotary hall sensor, it takes its reading from the cam pulley.

[A80Avant]

i had a similar thing, and it was the fuel pump relay.

[Greg_S]

Rocco, Do you mean the two sensors on the bell housing?

Well an update so far. The fuel pump is def running, I have taken the cover off over the tank and you can hear it. It runs when cranking then dies when you stop turning the key.

Next job is checking the voltage to the pump during and after the ignition key is released.

How do you go about briding the fuel pump relay?

[pixsaudisex2]

On my brothers s4 his wouldnt start and i remember a thread about pooring water behind the cam wheel to mess the cam sensor up. I did this and hey bingo it worked, strange but true.

[Jamo]

Yeah thats the trick for the hall sensor if it's on it's way out. It overheats. If you have to do this change the sensor asap

[Rocco]

Rocco, Do you mean the two sensors on the bell housing?

Well an update so far. The fuel pump is def running, I have taken the cover off over the tank and you can hear it. It runs when cranking then dies when you stop turning the key.

Next job is checking the voltage to the pump during and after the ignition key is released.

How do you go about briding the fuel pump relay?

sorry i am not understunding you

hope to take a picture the next week in you want,and i can show you wich part i had broken

sorry for my english