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Old 11-06-2019, 02:08 PM   #13
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Join Date: Aug 2018
Location: Woodland Wa
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Quote:
Originally Posted by particlewave View Post
I took it for a test drive today. Results:

1) After a 10 minute drive with some hard braking, front drivers side rotor was at 210f, front passenger 145f (oddly with a 1cm band in the middle of the rotor reading 190f), rears 90f (50f outside).
2) Braking power is still there, I just have to press a lot harder (pedal not hard or soft, feels normal).
3) The front end wandered a bit under hard braking, but only a couple times (didn’t seem significant).
4) Brakes lines are not swelling under pressure, but I’m going to replace them anyway.

Maybe low vacuum?
I think I should order a good manometer as I don’t trust my diy tube setup.
Sounds almost as if you have a torn diaphragm in the brake booster.
If you have something like a mighty vac with a gauge hooked to it you could pull a vacuum on the vacuum hose side of the brake booster and see if it holds.

Or in a safe place roll it down a hill with engine off hit the brakes then compare braking to normal engine running braking. If it feels the same both ways I would look at the booster more closely.
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