90 100Q cant rev past 5k under load

[Ray Rollins]

>From: "Bernard Littau" <bernardl at acumenassociates.com>
>To: "Ray Rollins" <rollins_ray at hotmail.com>, <quattro at audifans.com>
>Subject: RE: 90 100Q cant rev past 5k under load
>Date: Thu, 11 Apr 2002 13:12:30 -0700
>
> > I have a strange problem that seem to be slowly getting worse on
> > my 90 100Q.
> > The car starts and drives fine but it will not rev past 5000rpm
> > from second
> > gear on. I first noticed it on a trip a couple of months ago when
> > accelerating on to the highway in third and attributed it to the fact
>that
> > put 87 octane in it and the computer might have retarded the timing. I
>was
> > able to redline in first and second gear. Took a long trip last week
>(300
> > miles Rt) with 93 octane and did the same test running up through
> > the gears
> > from second. The car feels like it's hitting a soft rev limiter
> > when it gets
> > to 5k. In first it will got to redline and feels very quick for a big
>car
> > with all of 130hp. I am suspecting the fuel pump relay but is
> > there anything
> > else I should check for.
>
>This sounds like a fuel flow or fuel pressure problem.  When was the last
>time you changed the fuel filter?
>
>If a filter change does not cure the problem, there is a fuel delivery test
>you can run.  I assume the Bentley for the 100Q will have the particulars.
>A fuel pressure test would be in order after the fuel delivery test.
>
>Best,
>
>Bernard Littau
>Woodinville, WA
>'88 5ktq
>

The filter and pump are 4000 miles old. The car was bing driven on a bad
fuel pump for who knows how long, but my knowledge of this got me a better
price when I bought it.

Thanks,
Ray



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