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ABS problem 700

posted by  Aussie 74 144 on  Fri Apr 22 23:55 CST 2005
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Hi all

I have a ABS problem with 89 740Ti

The ABS light it flashing on and off and the ABS relay under the dash is going berzerk. I removed that relay to stop it from burning out untill I can fix the problem

I noticed that the light goes on and off when I go over bumps and uneven roads

Does this mean one of the flexible wires from the sensor to the body has failed of is there a bigger problem

George

Cars I own

Restoration project
Personal import 1974 144gl B20a M40

Cars I have owned
1982 244GL B23e/M45
1986 760GLE B28f/AW71

Everyday car
1989 740 turbo B230ft/M47 5 speed








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ABS problem 700

posted by  swede4 on  Mon Apr 25 17:03 CST 2005
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Wouldn't hurt to check connections and also remove cables/sensors and clean them up. They collect iron dust from the brake pads because the sensor tip is magnetic. If possible, check cable resistance with a known good one.
Clean teeth of sensor wheel in hub.








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ABS problem 700

posted by  spasske on  Mon Apr 25 02:19 CST 2005
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last visit: Thu Oct 23 10:11 CST 2014
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You may have other problems, but cleaning the two connectors by the struts that go to the sensors may help. Make sure the wires are pushed into the connector from the outside. sometimes they make a poor contact in the connector.
--
Paul NW Indiana '89 740 Turbo 110,000







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