[V8] Flaky ECU Communication

[Dave Saad]

I picked up a distributor from a VW 4cyl motor way back when and  
noticed that the hall sensor/pickup was pretty much the same as on  
the V8. I don't remember the details now but it seemed that you could  
remove the parts from one and put them on the other. You may need the  
services of a machine shop to press on/off various bits, but if you  
pick up a good donar for cheap who knows - you may get lucky. Be sure  
to get the connector too if they are different, and you have to  
verify the pinout.

btw, I got a set of distributors for my motor from a Canadian salvage  
yard for cheap too. As I recall, I got both distributors and the  
electric cooling fan for under $100US shipped - and it turned out  
that the fan was brand spanking new!
Those things are crazy expensive now - if you can even get one from  
the dealer.



Dave


On Aug 6, 2007, at 9:21 AM, Andrew Schlueter wrote:

> I have never been able to communicate to my ecu, I have tried 3  
> different vag-com cables with different computers every time. I  
> have been having multiple running issue with my v8, mainly i need a  
> new hall sensor. I cannot seem to find one anywhere.
>
>
> Andrew W. Schlueter
> '90 V8 Quattro
> '90 Jetta Quattro
> www.hausofdub.com
> ________________________________________
> From: v8-bounces at audifans.com [v8-bounces at audifans.com] On Behalf  
> Of urq [urq at pacbell.net]
> Sent: Monday, August 06, 2007 10:46 AM
> To: v8 at audifans.com
> Subject: [V8]  Flaky ECU Communication
>
> Lately on #2 I've been noticing that the car can get into a mode  
> where it
> has some major surging at over half throttle but less than WFO.   
> When I get
> home I see a fails to control emission (don't remember actual text,  
> but it
> means the ECU can't lean it out) code; the car runs better after  
> the code is
> cleared.  I drove the car about 400 miles yesterday and I hooked up my
> PDA/ProDiag.  Before getting started I tested to make sure I could  
> connect,
> but when the car was misbehaving I couldn't talk to the ECU.  On  
> the way
> home last night I left the carpet pulled up so that I could see the
> interface communicating with the ECU ... It certainly appeared to  
> be trying
> to talk to the ECU.
>
> I'm going to try swapping in another ECU just to see if it changes  
> things,
> but since the diagnostic plugs connect directly to the ECU I don't  
> think
> there's much else that could be wrong.
>
> Has anyone else noticed problems communicating with an ECU while  
> the car is
> being driven?  I've used the PDA before on shorter trips and have  
> not had an
> issue logging the data blocks ...
>
> Steve B
> San Jose, CA (USA)
>
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