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its a new master cylinder.

If applied slow and steady at lower speeds the peddle will bottom out but if applied hard the peddle will initially be hard then sink to bottom out. I still have breaks but not as good as I think it should be.

The brake system as a whole does appear to work properly to include the ABS. When driving fast and getting on it, I can brake and the system functions well and will slow the vehicle down. The sponginess is noticeable when a steady application to the brake peddle is applied at a slower speed...

Hello LLC5 I see you are a Master Mechanic. If I were to purchase a bi-directional scanner that is compatible with the 1990 C4 and capable of actuating the ABS system for bleeding. What would you recommend?

Hello Hib Is there a substitute for the T1 and Bosh ABS ALDL adapter that I can use to bleed my system? Is it possible to use a newer bi-directional scanner that will enable me to bleed it?

Where could I possibly find a "TECH1 with the Bosch ABS ALDL adapter, to run the "Mode 4: ABS Tests" " Or does anyone know what a suitable substitution would be to get the job done?

I see you are from Apollo Beach, Fl. I used to live in Riverview when stationed at McDill.

How did you bleed yours? Did you need a T1 and adapter?

Thanks for responding. I don't have the T1 and correct adapter, so I will just have to try the pressure bleeding and cracking the fittings on the ABS. You are correct that it is not in the service manual about bleeding the ABS. thanks again.

Hello I have a 1990 C4. I changed out the MC and booster, brake lines and calipers then flushed and bled the system; however, I still have a spongy brake peddle. Do I need to bleed the ABS pump/ system as well? If so, is there a way to do it without a abs scanner? I would appreciate any...

Light silicone spray worked. Hey Thanks again I thought I was going to have to pull the steering wheel and replace that hazard switch but the light silicone spray worked like a champ. I was able to slowly work it free and it seems to be working ok now. Appreciate the help. You are the Master...

Thanks When I manipulate the multifunction switch I can feel it slightly move but it has not popped out yet. I will try it with the silicone spray and see if that helps out. Appreciate the info.

My hazard light button is stuck in the on position. I tried to pull it out but it will not budge. Has anyone else had this problem, if so how did you fix it? Appreciate any help.

I tried to pull it out but it will not budge. I don't want to risk breaking it. Has anyone else had this problem and how did you solve it? Appreciate any help.