jpuskas

I have a 65 coupe with disk brakes. The car rolls fairly easily when its cold but after the car has been driven a while, the car will not roll easily and its very difficult to push the car by hand. After it cools off, its fine again. Any thoughts?

Avispa

How's your master cylinder? It may not be fully releasing fluid pressure.

kellsdad

I"d start by trying to note if the brakes on one of the wheels is hotter than the others. If so, that brake may be sticking for any of several reasons. .... One way to test is to drive for a while and return home with minimum braking (so the good brakes don't get hot). As soon as you park, spray a little water on each of the rotors. A hot one may steam more than the others.

Greg

Or lift the car and turn each wheel to see if you can isolate a caliper/hose problem. If they are all locked then look to the master cylinder.

Powershift

Master cylinder internal issue or a collapsed brake hose.

Try to identify which wheel or wheels are affected. That may identify exactly the problem. Is brake system power brakes with the dual reservoir??

Larry

Vet65te

I had a 66 Coupe and one day while backing out of the garage, it rolled with no problem for the first 20-30 feet but then stopped as if I had just run up against a wheel chock. Rolled forward and no problem but when backing up, it stopped again. Turns out the lower emergency brake spring had snapped and the shoes weren't being held in place and backing up made it grab the rotor. Probably a long shot but...
Mike T - Prescott AZ

Tampa Jerry

You may need to adjust the rod at the master cylinder. If it is a bit too long, it can allow the pads to stay in contact with the rotors and cause a drag. If this is the case, it will effect all four wheels as the system heats up. Jerry

SJW

Measure the heat at each corner with an I/R thermometer after driving the car. If all four corners are too hot, loosen the master cylinder from the firewall just a bit, and see if it rolls freely. If it does, you need to adjust the pushrod from the pedal.

If fewer than four corners are too hot, crack the bleeder at the hot corner(s) momentarily to relieve hydraulic pressure, and see if it rolls freely. If it does, replace the brake hose(s) that are in-line with that/those corner(s).

If none of these free it up, you probably have sticking calipers or possibly something squirrely going on with the E-brake mechanism.

Live well,

SJW

ah53

I was on Rt17 in Sloatsburg, NY this morning and passed a C1 with a cutout hood and maybe a blower (didn't get a good look) coming out of a Dunkin Donuts. I was driving the "65 GTO. Just wondering.

Joe