boxerfan

OK... here's the poop... that wagon I just bought still won't start, but I think I may be on the track as to why (but perhaps not and hence the post).

The distributor in it is different than the one I have installed in FrankenAudi. Completely different part number. The only difference I can see (other than it being clean and shiny because it is brand new) is that the windows for the hall sensor number more than one. The one in Frank has just one window and gives the timing refernce from the hall sensor only once per revolution. The other one I think must have 5 windows, and when the timing marks are aligned the hall sender is further round clockwise. I swapped the new one into Frank and he wouldn't start either.

So, now the first question... Is the distributor wrong?

Also, when I put the old dizzy back into Frank something new has started to happen. I think the distributor was originally rotated further clockwise. He starts much easier now, BUT as soon as I hit positive manifold pressure the check engine light comes on. ARRRRRRRGHHHHH!

Any thoughts?

cuatrokoop

It is used as a "Cam position sensor" of sorts, whereas the naturally aspirated 10v's use a 5-window distributor, as it needs one trigger per timing event (5cyl = 5 window).

auditech1218

If you have a 034 905 205 or 034 905 205H with 5 windows,thats for non turbo

boxerfan

Does a non-turbo car have a different ECU?

cuatrokoop

and since it doesn't need a PT to read MAP, it doesn't need to control boost with the WasteGate Frequency Valve (WGFV) which is essentially an early form of an N75 valve or Electronic Boost Control (EBC), which is all the rage today! Nice of Audi to use a WGFV since, well, always with the turbo motors.

boxerfan

So is it a different ECU for non-turbos? I imagine the timing is very different.

cuatrokoop

Most definitely a different ECU......