Re: No Start - 89 100

[johnholt@cybernet.on.ca (John Holt)]

Dave Conner wrote ...

>This is an 89 100 with automatic trans.
>The starter won't turn, and doesn't seem to be getting any power from the
>ignition switch.  The starter checks out OK.  When I run jumper cables
>directly from the battery to the starter it works and the car runs fine.  I
>replaced the electrical part of the ignition switch and it started once,
>but no more.  Prior to this, during the previous month there were a couple
>of times where the car wouldn't start (no response from starter) but after
>waiting a while it would work.  So it seems like it began as an
>intermittent problem.
>My latest idea is to check the switch at the brake pedal which locks out
>the starter (I think).
>There are two switches and I think one is for backup lights and the other
>for the starter.  The car won't start unless your foot is on the brake
>pedal.
>Does this switch sound like it's my problem?  I don't believe it's even
>shown in Bentley.
>Anybody got any ideas what else I might check?

It's obscure and it looks like you may have eliminated it as a problem but
I had the same symptoms. When you checked the starter, did you bypass the
solenoid by connecting directly to the starter?. If so, go back and check
the braided wire between the solenoid and starter to ensure that it is
solid. Don't just look at it...you must roll it between your fingers and
give a reasonable tug from the centre to both ends. Mine disintegrated in
my fingers.

>
>What's the best way to learn more about electrical troubleshooting.  At the
>moment, owning three older Audi's, I surely feel like I'm learning the hard
>way.

Is there another way? Just add the The List and The Bentley.

John

2 of those 1988 90Qs