Date: Fri, 12 Oct 2001 19:22:33 +0200 From: Mats <vem_tror_dunopsamail.com> Subject: Re: Pulsating brakes, climbing idle
On Wed, 10 Oct 2001 18:38:53 -0400, Dave <ddhartwicknopsamPAMearthlink.net> wrote: >I have an 89 900S, 170K. > >Problem 1) Unstable idle. Had a stable, ~900 rpm for years. Now after >starting, it starts at about 1100 rpm and climbs to about 1400 rpm >over a period of 7-10 seconds, then drops back to 1100. This cycle >then continuously repeats itself. Behavior doesn't seem to change >after warm-up--I think. Engine runs fine otherwise. No starting >problems. Fuel management computer replaced a few years ago. > >Problem 2) Pulsating brakes. This is especially noticeable just prior >to stopping. My dealer had a look and said the rear rotors were >warped, which were replaced. No difference. Is it obvious that the >front rotors are also warped/need turned, or could this be caused by >another problem--something in the power assist system? > >Could there be a relationship between Problems 1 and 2? >Dave There could be a realtionship between the problems, as your idle is unstable, the vaccum for the brakes is also unstable, but it sounds like a long shot. /Mats
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