BrickBoard Archives
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Intermitent Anti-Brake Signal[740-760/1989] posted by Greg Crowley on
Wednesday, 10 June 1998, at 7:43 p.m.
I have a 1989 740GLE that sometimes has the anti-lock brake warning light on. The brakes are new so I know the're OK. Is there a connector somewhere that should be cleaned?
--Greg Crowley
Re: Intermitent Anti-Brake Signal[740-760/1989] posted by George Swift on
Wednesday, 10 June 1998, at 10:23 p.m.
Check ABS sensors at front wheels, and clean them. Check B+ wires @ positive battery cable. Corroded positive terminal could be the problem.
George Swift / Volvo Car Care
Re: Intermitent Anti-Brake Signal[740-760/1989] posted by Dave Stevens on
Monday, 15 June 1998, at 4:03 p.m.
If George's suggestions of cleaning the front ABS senders (sensor and pulse wheel) and associated electrical connectors doesn't stop the intermittent ABS fault then you may need new sensors. I found the original old style sensors (rectangular tipped) on my '89 were over-sensitive, especially at low speeds on very smooth surfaces. Your car may or may not have received the in-warranty upgrade to the less sensitive new style sensor (diamond shaped tip). If not, it would be a relatively easy DIY upgrade.