Birger Eriksson

Hello my sixspeed Audi S8-1998 doesn't start.
Found this codes any suggestion where to start.


16684
18010
16686
16687
17917

jfrahm

I suggest googling the codes to see what they mean.

Birger Eriksson

I put in a good battery for one of the codes so it turns properly but does not start.
Suggestions please.

jfrahm

Try a puff of starting fluid or inject some into a vacuum line to see if it'll catch.

90SQ

These tend to fail, one for right bank(1-2-3-4) other for left bank(5-6-7-8). Try switching them around, erase checks and try to start the car, if checks come back with 5-6-7-8 misfire that's your culprit. Replaced one of these on my '98 a while back with the same problem your having.

Birger Eriksson

I have not erased the codes but tried that part on the upper easier accesible module.
Tomorrow with less cold( 7degrees celsius below zero) outside will I try to change place with the other module .