Ferrari Mailing List: FW: 308 tech question

[George P . (ygpz4re]

Might be a crank position sensor going bad - known to cause backfiring (ask me how I know - or better yet, don't.), and could also be root cause of 11K tack reading (bad signal out = bad signal in somewhere else, i.e. tach).
 
Just a thought.....
 
gp
 

>
> Hi Guys,
>
> I took my 85 308 out for a mountain spin today, and had a weird running
> experience - for the first 3-4 miles of city driving the engine was
> backfiring pretty bad and the tach was showing 11k RPM, but I was only
> actually running around 2-3k..
>
> Then, after about 4 miles she suddenly settled down into her normal purr for
> the rest of the 60 mile drive J
>
> She has not been out for approx 3 months, and perhaps was just a little
> pissed at me for neglecting her(as most women would be)?? Or other
> thoughts?
>