[V8] SMOG MIL Problem w 90 V8 Quattro

David Head v8q at bellsouth.net
Mon Mar 8 06:31:35 EST 2004

I believe there's a wire behind the instrument cluster that still needs 
to be connected for that to work - didn't Steve post about that?

Bob Herguth wrote:

>I'm new to the list and have Ford EFI experience, but no Audi experience.
>My neighbor's 1990 Audi V8 Quattro failed a CA Smog check simply because the
>MIL (Check Engine Light) didn't flash during the appropriate part of the
>test.  It appears from reading the archives that pre-March 1990 cars and
>Federal, Non-CA cars didn't have a light installed.  He doesn't think it was
>originally a CA car, so this may be the cause of the problem, however, he
>just paid a shop to install a lamp and it still failed the lamp test.  I
>haven't tried flashing out the codes yet as I intend to build a VAG 1115
>I also read in the archives that older cars had a place on the FP relay to
>cause the ouput of codes through the use of a fuse as a jumper.  This sounds
>very odd to me, but OK.
>1. Where is this relay on a '90 so I can give it a look?
>2. Besides this relay possibility, are there any other reasons y'all can
>think of why the MIL wouldn't flash?
>	-- Bob
>	1986 Mustang LX 5.8l
>	1992 Mustang LX 5.0l
>	1994 Taurus SHO ATX
>	1989 Taurus SHO MTX (Soon!)
>	1999 Durango 4x4
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