Ignition Light

[Bernard Littau]

> My 87 5kcstq has been a joy to drive ever since I installed the SJM
computer
> mod and 1.8 bar spring.  Lately, the last 200 miles to be exact, the
yellow
> check engine light comes on when the car gets to about 3200 rpm in any
gear.
> This is the light with a picture of the engine with a symbol in it which
> looks like #.  I thought that I might have gotten a particularly bad load
of
> gas (I normally use regular) and changed from regular to premium (BP
> Ultimate, since I work for BP).   The light still comes on at about 3200
> rpm.  Have any of the listers had a similar problem ?  Would I be causing
> serious damage if I drove through the light, assuming that this is just
Audi
> electronics and nothing is wrong or should I take this warning light
> seriously ?  Could this be a knock sensor malfunction ?

I would not drive through this warning.  You need to pull the codes to see
why the check engine light comes on.

SJM's web site has the info you will need to pull and interpret the codes:
http://www.sjmautotechnik.com/ecuf.html

Let us know what codes you find.

Best,

Bernard Littau
Woodinville, WA
'88 5ktq