1990 Toyota Corolla "hydrovac" Questions

...goes up every time i hit the break. Look for a valve in the hose connected from the brake master's hydrovac going to your engine's intake manifold . check if it is still working, the valve traps the ...

Brakes are out, accepts fluid but no leak, and pedal goes to floor. Any suggs? Try to check your HYDROVAC assembly.. remove assembly and detach brake master, see if there are fluids present on the ...

...only sometimes ? this has a 7.5 international diesel Are you sure that your truck does not use a hydrovac unit rather than a traditional power brake booster unit? The hydrovac unit runs off a pump ...

...valve, does the fluid flow solid when brakes are applied? If yes then the problem will be on the hydrovac. You can have a vacuum leak that's why the brake pedal stays on the floor. If the

...IN THE WORLD COULD MAKE THIS HAPPEN? Hello and welcome to FixYa! If I we're you, I'll replace the hydrovac itself. It may be worn out that's why this issues occur. Two things that can result by a ...

What Could Be The Cause Of No Brake Pressure? Hi! A broken hydrovac can cause this no brake pressure. I strongly suggest that you replace this to avoid accidents. HOpe this helps and have a good one!

...locking up calipers lock up in front even after replacing them problem is in your brake master (hydrovac).  just replace the brake kit located inside the brake

hydrovac if you step the break and hold it for few mins. the break start to go down. i check the brake master there is no leak. any suggestions? check rear brake lines and rear slave cyl

is no relay for power brakes, it is operated by means of vacuum from the intake manifold, the servo/hydrovac is located at the bottom of the brake master. Hope that helps you out

...mostly at the right when you open the hood, it is connected with the big black round thing its the hydrovac. hope this helps, have a nice ...