bella Posted March 22, 2006 Share Posted March 22, 2006 My problem is that with engine at idle speed(850-900 rpm), if I press brake pedal, RPM falling down around 6-700 rpm even if engine is warmed up.Could be vacum leack??Or what...?? Thanks 1 million. Quote Link to comment Share on other sites More sharing options...
[HTi]Johnson Posted March 22, 2006 Share Posted March 22, 2006 It could be a vacuum leak with the brake boost cylinder or a crappy electrical connection with your brake lights that causes too much of a draw on your alternator. (I've had the second one happen) P.S. A year and model will help a lot. -Justin Quote Link to comment Share on other sites More sharing options...
bella Posted March 22, 2006 Author Share Posted March 22, 2006 It could be a vacuum leak with the brake boost cylinder or a crappy electrical connection with your brake lights that causes too much of a draw on your alternator. (I've had the second one happen) P.S. A year and model will help a lot. -Justin 1986, Leone, Sedan, EA82, 1.8GL, Carb, 4WD. Thanks. Quote Link to comment Share on other sites More sharing options...
somick Posted March 22, 2006 Share Posted March 22, 2006 This is normal. Brake booster uses engine vacuum. Sam Quote Link to comment Share on other sites More sharing options...
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