[V8] V8 won't start when engine is hot!

[Tony and Lillie]

Subject: [V8] V8 won't start when engine is hot!


> Hi guys, haven't posted in a while since I moved on to a 20V
> Turbo but I have an issue and need help.  Both Audis decided to
> sh*t on me at the same time.  S6 siezes the rear caliper while
> fiance is driving it and proceeds to turn the rotor into
> hamburger, and the V8 which I just put back on the road last
> week will now not start when it's warm.  The car always started
> very quickly since I have onwed it the last 5 years, I mean like
> in 2 cranks, but now all of a sudden will not start when the
> engine is warm.  When it is cold it starts right up, like
> nothing is wrong.  Any insight out there as to what this is?  I
> have not pulled any codes b/c I never have and don't know the
> procedure.  If I recall correctly from my 4 years of lurking on
> this list does a engine speed sensor sound like the problem?
> Thanks for any help.  I am currently stuck at home b/c both of
> my Audis are down.......this sucks:(
>
> I must be sadistic to have 2 of these 4 ringed bast*rds!
>
> John
>

John,

I'll agree on the sadistic part.

Your problem sounds exactly like the speed sensors. There are two of them on 
the drivers side of the engine. The are held in by two 10mm head screws. The 
connectors are under the drivers side distributor. It's easiest if you 
remove it. The replacements are about $170 each. However, I've recently 
found that the ones for a 5000-or your S6 for that matter-function exactly 
the same as the V8. For that matter, both on the V8 are functionally exactly 
the same. The ones for the 5000 are about $112 on bimmerzone.com, you might 
find them elsewhere for a little cheaper. Th only difference in them is the 
length of wire before the plug. On the V8, it's about 10", on the 5000, 
about 2 feet. I'd just make a couple of nice loops and zip-tie them.

Tony Hoffman