'88 90q part #: ques.

[Huw Powell]

jDolan wrote:
> 
> I'm having some fuel problems with my tired 90q. It seems to be fuel
> starved, and the intensity of that condition is intermittent, mostly
> occurring at startup, and improving somewhat after warm-up. It seems to
> be progressively worsening, and now that I remember it, it was there,
> only to a lesser degree, last fall before I replaced the fuel pump and
> filter after the FP died.
>  So, I'm on a quest to figure this out, and without the benefit of a
> Bentley's. I consider if could be the regulator(?) thing back next to
> the fuel pump? I pulled the intake this AM and cleaned that and the ISV,
> also inspected all hoses for cracks, etc. checked tightness of (new)
> valve cover gasket, everything I could think of. Nothing found, nothing
> improved at re-assembly.
>  If anyone has any pointers to throw this-a-way, I'd gladly receive
> them. The problem mimics a stuffed filter

does it run well at WOT under load when warm?

I suspect you should check the temp sender for the ECU - maybe the poor
thing never even knows when it is cold... and needs more fuel.

Measuring current to the DPR will give you some clues.

-- 
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/