Quirky electrical problem - Saab 900 Bulletin Board - Saabnet.com
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Quirky electrical problem
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Posted by Sam (more from Sam) on Tue, 19 Oct 2004 10:15:38 Share Post by Email
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An odd electrical fault has developed on my '88 900i.

It first manifested the other night when I arrived home and switched off the ignition, except the engine did not stop and the lights remained on, when I took my foot off the brake then it stopped.

On investigation I find, with the ignition off, when I depress the brake pedal the ignition/alternator lights illuminate briefly before going out, the parking brake and brake warning lights dimly illuminate before a relay
clicks, then these warning lights brighten and the headlamps illuminate and the fuel pump spins up.

I investigated the front crossmember earth, a number of the wires disintegrated as I removed the bolt and I had to replace a connector. I cleaned all the very corroded terminals. This had no effect on the problem but now the lights are loads brighter and the engine is running smoother than ever. :-)

I had a look at the left hand rear light cluster. A previous owner has added a suplementary earth and smeared the connectors with grease. I cleaned up the connectors and the supplementary earthing terminal - no improvement.

Tomorrow I'm going to have a look for the earthing point under the left hand speaker, if I can find my torx bits :-) Are there any other earthing points I should be looking for, or am I barking up the wrong tree?

Any ideas anyone?

Cheers all

Sam



posted by 81.178.2...

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