Quote:
Originally Posted by Jim Nolan
If the check valve on the power booster sticks and doesn't release pressure will the brakes lock up. The Z was sitting for about 2 months and I took it out for a ride and one of the brakings the brakes stayed applied, the brake pedal was full up, hard as a rock, with no give to it. After the car was shut off for about 10 minutes then started back up all was normal. This happened about 5 years ago once and never again until yesterday.
The service manual does not give instructions for replacing. Is it just prying the old one out and lube and install the new.
Also no MPH reading and FX3 codes 23
Jim
|
Do the VSS check for the Code 23 and no MPH display first I believe. Clean the under-car connection at the VSS first, it wouldn't be unusual to have a situation there. That would have this issue out of the way. You don't mention the year and the VSS is of different construction '90 MY and then the later '91+ years. Which is yours?
THE BRAKES?
The OE/GM check valve is still available from GM but the price will take your breath away. The OE/GM # 12521454 did NOT fit anything other than the C4 Corvette. The grommet was also a C4 only application and that is NLA. Will the other $4 choices do for the valve?
I believe I'd do a salvage part and get the grommet with it if I wanted to try the check valve.
Quote:
Originally Posted by mike100
even removing yours and trying to blow air thru it to see if it works every time or not.
|
This I don't believe would be very wise. I might try a very LOW controlled vacuum suction on it and see if it maintained but a blow through I believe could just as easily ruin maybe a good one. Just my thought! Check the price of the OE first. That could be a game plan changer!
Which brake locked? There are two hydraulic lines from the master to the ABS module on the LT5 that of course seldom fail but you did mention lock up so maybe that would be a good place to start.