2006GXP Posted July 17, 2011 Report Share Posted July 17, 2011 I have a 1990 Grand Prix Mclaren. It has a break motor that kicks on when you apply the brake. It wont shut off. I went through two batteries and replaced a eletronic control that is suppose to control the brake motor. It burns them out. At 500 per unit I dont know what to do. Any advice would be appreciated. Quote Link to comment Share on other sites More sharing options...
jman093 Posted July 19, 2011 Report Share Posted July 19, 2011 Never worked on an a PM3, but I'd guess the accumulator is leaking so the motor has to run all the time. Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted July 19, 2011 Report Share Posted July 19, 2011 $500 sounds like a pretty good price, thought these thngs ran for over a grand? Quote Link to comment Share on other sites More sharing options...
White93z34 Posted July 19, 2011 Report Share Posted July 19, 2011 is the anti-lock light on, on flashing or removed from the instrument panel? Quote Link to comment Share on other sites More sharing options...
GOT2B GM Posted July 19, 2011 Report Share Posted July 19, 2011 Either a sticking relay or failed pressure switch. Quote Link to comment Share on other sites More sharing options...
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