200 10V stumbles, poor mileage

[kbogach at comcast.net]

That what I thought how it should work. But there is 12V across the connector when car was running for awhile (and was hot). Can someone test it on a running car? :) I recall from long time ago that other people reported that CSV was engaged well after cranking. 
-- Konstantine 

----- Original Message ----- 
From: "Ben Swann" <benswann at verizon.net> 
To: john at westcoastgarage.net, kbogach at comcast.net 
Cc: audi at humanspeakers.com, "Quattro List" <quattro at audifans.com> 
Sent: Tuesday, December 29, 2009 9:04:55 PM (GMT-0500) Auto-Detected 
Subject: RE: 200 10V stumbles, poor mileage 

That does not sound right. 

The injector should pulse during startup when the engine is cold. Duration of pulses is dependent upon engine temp. The pulse is caused by a switching to ground AFAIK - either through the ECU or some other means - depending upon ECU. 

There should not be a constant current path on both side of injector terminals. There would be a positive voltage present on one terminal all times and shared with other devices (blue/black wire), but other terminal should not go to ground except through the ECU(pin 1). 

That is the way I recall without looking in more detail at the manual or other schematics. 

See http://www.gtquattro.com/MCWiring.html for wiring details - MAC-14 is similar. 

Ben