Quote:
Originally Posted by
rob the elder
If you have to wait for a minute or even two minutes for brake pressure (vacume) to come up, then that is just the way your car operates. Our Sky takes about 15 seconds to come up to full normal pressure. I wait 20 seconds before I make a brake demand, then I check pedal pressure before I back out. Its part of the normal operating procedure for the car. I have never had a problem since I adopted this procedure. I dont think that GM screwed up because the car does not always have instant on brakes.
My 07 SOL has the vacume pump and I still wait for 15-20 seconds for the engine and appliances to come up to normal operating pressure, rpm etc. Then I put my foot on the service brake and know that all is well. Then I drive out.
If you dont' have braking after a minute then you have a problem. You need to get it repaired and returned to service.
Complaining about the evil GM and how they are out to screw us is . . . well just pointless and wrong.
And this is where the car as appliance breaks down. When we are being told to never warm up a vehicle as it is bad for the environment, just start an go then that is a problem. Now we are being told to warm up the vehicle since the highly sophisticted and most modern brakes cannot work on vacuum alone or there is insufficient vacuum produced by the engine. I had a diesel Chevy with the converted Olds. Diesels do not produce vacuum, so in place of the distributor was a vacuum pump and the brakes worked immediately and all the time. Why GM needed to complicate things with hydraulics just complicates things. It isn't like the brakes don't work under manual pressure - they do, but take more foot pressure than some drivers might be able to exert. And if you cannot hold the vehicle still, even when in neutral for starting - and have not employed the parking brake then there could be cause for alarm. But this will obviously be many drivers' first exposure to a not-instant on and ready to go car since the days of manual chokes.