ECU or Injector probs???

[blues n 2s]

can anyone shed any light on common problems?hometune tells me no signal to injectors and tells me ecu problem but can be corrected.is this likely?if so where is ecu,an how much am i lookin at?cheers guys. oh its 3b.

[blues n 2s]

anybody???? found where it is located thanks

[david]

can anyone shed any light on common problems?hometune tells me no signal to injectors and tells me ecu problem but can be corrected.is this likely?if so where is ecu,an how much am i lookin at?cheers guys. oh its 3b.

you will find it under the glove compartment on the passenger side

i think you may have blown your ecu.
try and test with another 3b ecu just to be sure.

[blues n 2s]

you will find it under the glove compartment on the passenger side

i think you may have blown your ecu.
try and test with another 3b ecu just to be sure.

blown it!!! damn she was tickin over then cut out.refuses to start now
ok does anyone in the northwest have 1 i could borrow pls.will leave a deposit obviousy,or if i take mine off an plug into your vehicle

[blues n 2s]

hello guys pls help with this have had auto spark out. wired inj's direct pos an fired up but not fixed yet.ecu had clean bill of health just seems to be electric fault.there are no apparent breaks tho spark seems apprehensive to dig too deep as this is a conversion. any common places to look.he has gone to check some sort of auto data sheets(???) little concerned he wont find info req'd cheers guys

[S2central.net]

Look for 3B wiring diagrams in technical --- electrical pages of www.s2central.net

1st thing to check is that all the engine fuses are good... one of them protects supply to the injectors.

Is this a 3B transplant into some other Audi - was the fuel pump relay wiring done correctly - and are you on the correct relay for 3B ?

[blues n 2s]

Look for 3B wiring diagrams in technical --- electrical pages of www.s2central.net

1st thing to check is that all the engine fuses are good... one of them protects supply to the injectors.

Is this a 3B transplant into some other Audi - was the fuel pump relay wiring done correctly - and are you on the correct relay for 3B ?

ok will do thanks mate.yes it a 3b into cq 2.3 20v.not sure about wiring done correctly or on the correct relay.However it hasn't been problematic it just ticked over rough then stopped,on its way to pre booked mot wouldn't ya no lol.This car knows when to play silly ******s -how do i tell which relay to check btw cheers mr.Genius

[S2central.net]

Should be a 208 relay in position 10 main fusebox. Tricky bit is when wiring to make sure it's done right as the 3B uses additional pins on the fusebox to drive not just fuel pump but injectors, MAF etc etc

If the car ran good previously then the wiring must have done ok. Would be worth a check that something silly hasn't been disturbed or shorted if there was a bad connection somewhere.

[blues n 2s]

Almost There.cant Find Fault But When Put Live Feed To Injectors She Runs.however I Dont Know How The Live Is Fed , My Spark Skills Are Poor :sad:thinkin Will It Be Easier To Just Run Ign Live Wire Myself As The Pulse Side Is Apparently Ok.are The Injectors 12v Or Somethin Different.help Deeply Appreciated Guys

[S2central.net]

I am finding this hard to follow now... i think I should go on a UK tour and try to rectify some of these wiring niggles on engine transplants... there seems to be a spate of them the past few weeks.

[blues n 2s]

I am finding this hard to follow now... i think I should go on a UK tour and try to rectify some of these wiring niggles on engine transplants... there seems to be a spate of them the past few weeks.

WELL THATS ME KNACKERED IF YOUR STRUGGLIN :SCRATCH: LOL

[S2central.net]

If you can wait a few days until I have a 3B loom in my hands... I will document a detailed guide with lots of pictures and annotations so that folk like yourself can check more things out. There is no point in me quoting you terminal 87F from the CEP on a gn/ge wire via S13 if you dont know WTF I am on about...

[blues n 2s]

If you can wait a few days until I have a 3B loom in my hands... I will document a detailed guide with lots of pictures and annotations so that folk like yourself can check more things out. There is no point in me quoting you terminal 87F from the CEP on a gn/ge wire via S13 if you dont know WTF I am on about...

HAHAHA I CONCUR WITH THAT PAUL. THANK YOU.SPARK WHO LOOKIN AT IT FOR ME COULDN'T BELIEVE NO INFO ON HIS AUTODATA LOL(EVEN THO I TOLD HIM)PAUL CAN YOU MAKE IT SIMPLE AS PLS TELL ME WHERE ON VEHICLE I SHOULD BE LOOKIN ETC. CHEERS MATE HAD THIS CAR BOUT 6YRS NOW AN NEVER HAD IT IN THE ROAD PROPERLY.CAN I DO MY SUGGESTION JUST TO TRY N GET IT THRO MOT?INJECTORS 12V?

[blues n 2s]

does any one no if the injectors are 12v or not so can run temp live so as to MOT car (no doubt will fail)whilst i wait for the genius that is s2central

[S2central.net]

The black/blue wire side of the injectors is 12v when the ignition is on. You should also see 12V at the MAF supply as well here.

This is achieved by the ECU holding relay until the fuel pump relay activates to take the load when engine is running.

This black/blue wire must be fused though