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With engine running, pull main vacuum line from brake booster and see if there is suction/vacuum. If so booster may be bad or another line is not connected right. Make sure you're getting enough engine vacuum for the power brakes to work. Use a vacuum gauge to find out if it's creating enough vacuum. You may need to set up the timing or check for some kind of vacuum leak to get the brakes to work properly. Answer All Super Coupes do not use a vacuum booster. They have ABS system. Look under the ABS unit, right side (nearest to engine) and you will find a connector that runs the ABS pump. Without this the pump wont run and have very hard brake pedal. Make sure wire is connected/inserted completely. Next check the ABS pump relay connection located on the right side firewall near where the hood hinge mounts. You should see 2 or 3, 1 inch by 1 inch "boxes". The brown one is the ABS pump relay. Both may have been disconnected when your engine work was done and was missed when it was put back together!

2009-09-04 14:36:30
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