Sketchy brake diving/pulling issue
#1
Sketchy brake diving/pulling issue
If you punch the brakes at any speed, my 88 firebird pulls hard to the left, and at high speed it's getting somewhat dangerous (when you arent expecting it). I bought the car about a month ago and tore apart the front brakes, expecting them to be fried, but it had nearly new pads, calipers, and rotors with even wear.
Thinking one of the slide pins may have been seized, I cleaned and lubed it all and put it back together. Still does the same thing.
Possibly related: over the 3 months the car has been sitting, I noticed a small spot of brake fluid from the left rear drum, coming from the inside. I took the drums off and the brakes still look operational, just wet from where the wheel cylinder is leaking. Is this without a doubt, 90% the problem? It seems obvious, but I wanted some input before I start throwing something as boring as drum brake parts at it.
I was an auto tech for awhile, and the pulling really does feel like it's coming from the front. What are the chances the rear brakes are working at full capacity anyway (enough to cause the pulling)
Thanks
Thinking one of the slide pins may have been seized, I cleaned and lubed it all and put it back together. Still does the same thing.
Possibly related: over the 3 months the car has been sitting, I noticed a small spot of brake fluid from the left rear drum, coming from the inside. I took the drums off and the brakes still look operational, just wet from where the wheel cylinder is leaking. Is this without a doubt, 90% the problem? It seems obvious, but I wanted some input before I start throwing something as boring as drum brake parts at it.
I was an auto tech for awhile, and the pulling really does feel like it's coming from the front. What are the chances the rear brakes are working at full capacity anyway (enough to cause the pulling)
Thanks
#2
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: Sketchy brake diving/pulling issue
My money is in a failing rubber flex hose up front causing this issue. Replace them both.
Rebuild the rear brakes either way, since they are leaking. Do both sides, and the flex hose too.
Rebuild the rear brakes either way, since they are leaking. Do both sides, and the flex hose too.
#4
Re: Sketchy brake diving/pulling issue
I agree. Replace all of the flex hoses though. After you said the front brakes were fine I would have almost bet that the right rear would have had the leak or issue though.
#5
Re: Sketchy brake diving/pulling issue
The lack of vacuum from a big cam already makes the brakes in the car less than ideal; it would be nice to at least have them more predictable.
#6
Re: Sketchy brake diving/pulling issue
Problem solved. The passenger hose looked kinked and was missing its outer jacket in that spot. Naturally, I ordered two drivers side hoses by accident. I see they are identical except for the way they go into the hanger bracket thing. That was easily "adapeted" with a die grinder.
#7
Senior Member
Re: Sketchy brake diving/pulling issue
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