JAMMAN
Owns A Torsen
Joined: Mon Sep 18th, 2017
Posts: 6436
Name: Jim ... Occupation: 5 axis cnc programmer ... Interests: RBV's ...
Reputation Points: 6436
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I have seen this believe it or not. It wasn't a ranger, and I only think I figured it out.
It would only happen at sustained rapid acceleration, between 80 and 100MPH. I had it to 130 once on the highway.
It was after I re routed the exhaust. It had side pipes, when one fell off I put 2 glass packs on and pointed them to the side. Then the brake problem happened.
My initial thought was the brake fluid was getting heated up by the exhaust routing, one of the outlets was by a brake line on the left. You think I'm dumb now, you didn't know me as a kid.
Accelerating to high speeds would result in the brake pedal going to the floor on the first hit with little or no effect.
My theory later was my rotors were warped, my drums were warped, and at high speeds the warped rotors would spread the pads apart as far as they would go (this is back in the day when you had rotors turned. Several times. When they were smaller than the limit, you found a place that would turn them anyway).
Same on the drums, it would shake the rear cylinders in to the max, coupled with worn shoes / no rear adjusters, drums turned several times there was more travel on the 6 pistons than could be filled by one pump of the master cylinder. Second pump you could feel resistance.
I didn't prove either of these but the second theory seemed more likely.
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00 XLT 4WD RCSB 3.GO! Jalapeño
01 XLT 2WD RC Steppie 3.0 auto Silver
The future belongs to those who show up.
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