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Discussion Starter · #1 ·
1989 740 Turbo
My brakes are seizing on the front rotors after they have been used frequently in traffic epecially in warmer weather. They are girling w/ABS. When cooled off they return to normal and the calipers seem to release normally. Is it time to change calipers? Is there a proportioning valve on this model and if so where is it lcated. I would like to repair this as efficiently as possible without changeing everything needlessly. Any sugggestions as to what is causing this? Thanks.

Corny
 

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I would say to look at the rubber flex lines to the calipers. and to check the calipers.You can try pushing the caliper back and if they are really hard then the calipers are going bad.
 

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I think there is if so it should be on the drivers side by the bottom of the car.It is hard to explain where it is.I think it might be more of a warning valve.That is what makes the brake failure light come on.
 
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