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I took care of the leaking china walls on my '89 TPI recently. After putting everything back together I'm getting an INTERMITTENT high idle (1-1.2K), and no brakes. The car runs great, but the brake pedal requires both feet to stop the car from 25 mph (hard pedal).
Now, my first thought was the brake booster, but it worked before the tear down. So, unless I banged it up during the process, I'm also skeptical that is the issue.
Other vacuum lines were tested by removing them and/or carb cleaner.
Somehow your brake booster vacuum hose is not connected correctly resulting in a vacuum leak and not enough vacuum to the booster. Check the hose and anything that t's off of the hose.
Somehow your brake booster vacuum hose is not connected correctly resulting in a vacuum leak and not enough vacuum to the booster. Check the hose and anything that t's off of the hose.
But the line from the plenum to the brake booster check valve has been checked and double checked.
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.