Just picked up a 1989 900 turbo convertible with electrical issues. I
have 2 main problems-wiper motor runs but not strong enough to make it
across the windshield + at idle the engine surges. I know there are
some electrical bugs in the car because when I turn on the wipers the
side marker lights come on. When I step on the brake 3 bulbs illuminate
on the left/1 on the right & something lights up in the front as well,
although I haven't checked to see which bulb that is yet. When I got
the car the taillight bulbs were screwed up-wrong bulbs installed &
some were corroded. I replaced a few but need to pick up more.
For the surging issue I heard it could be a fuel delivery problem so I
tried fuel injector cleaner & replaced the fuel filter but it didn't
help. I'm wondering if a lot of these problems could be related because
the car didn't surge when I test-drove it nor was there a problem with
the wiper motor. That is until I took it on the highway (1st time in a
couple of months according to the previous owner).
Any advice would be much appreciated.