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Breaks sticking 84 Honda Accord

1984 Honda Accord, Automatic 1.8L 4cyl.

After driving the car long enough for the breaks to warm up, the front breaks begin holding. The break pedal gets very firm with no travel until the car wont go anymore. After the car sits and cools down, the breaks release. I have replaced the master cyl, break booster, front pads and calipers. Bleed the entire system but the same thing still happens. Any ideas? No fluid is leaking and the breaks work fine until they heat up from stopping several times or going down a hill. Someone suggested the proportioning valve. Can this valve cause this problem? I have contacted all of the local auto parts stores and none of them sell any proportioning valves 'dealer only'. I have looked up used ones on ebay and they seem to all have the same connections mine has, can I use one from any car as long as it has all of the connections or does it have to be specifically for this car?

ANY suggestions/info will be greatly appreciated.

Thank you

Reply to
mholstein
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I don't think the prop valve could be your problem, as that would generally cause issues with the *rear* brakes - the fronts generally run unproportioned straight from the master cylinder.

Have you ever replaced the brake hoses on this car? My first guesses would either be simply old front hoses that are acting as check valves, or else improper master cylinder pushrod adjustment (do you have enough freeplay in the brake pedal?)

Also, are you sure that it is the front brakes? if they are dragging badly, you should be able to feel the wheels and find them to be quite warm. If it is actually the rears that are dragging, there are other things to check,. like parking brake adjustment.

Finally, if you are sure that the front brakes are the problem, if you have the ability, next time the brakes start dragging, immediately jack the whole front of the car up and try to spin the wheels. I'm assuming that you will find that they are in fact dragging. then crack a bleeder screw on one wheel, If both free up your problem is not at the caliper or hose, but in the master cylinder, pedal free play, etc. If only one frees up then the problem is likely either the hoses or else bad reman calipers. If they don't free up at all it's a mechanical problem with the caliper or something in that area.

good luck

nate

Reply to
N8N

THANK YOU!!!!!! It was the master cylinder pushrod. Minor adjustment and now the breaks are perfect! After messing with this thing for over 4 months...

A million thanks!

mikey

Reply to
mholstein

Great! glad to hear you fixed it and thanks for the feedback.

nate

Reply to
N8N

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