getdealtwith
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My '04 Navigator's idle has been dropping / stumbling at stop lights a couple of times. This doesn't happen frequently or consistently though.
What does happen ever since my mechanic replaced the master cylinder and brake reservoir because of a leak is that after cold starting and backing the truck out of the downhill driveway (applying the brakes) is a weird pop / release noise from where the diaphragm is located near the brake pedal.
I'm not experiencing any other symptoms of a failing brake booster, no hissing sounds and the vacuum line to the intake manifold is new.
Should I replace the booster? It definitely has some surface corrosion from the brake fluid but I've seen that before without any problems. (Pics attached)
What does happen ever since my mechanic replaced the master cylinder and brake reservoir because of a leak is that after cold starting and backing the truck out of the downhill driveway (applying the brakes) is a weird pop / release noise from where the diaphragm is located near the brake pedal.
I'm not experiencing any other symptoms of a failing brake booster, no hissing sounds and the vacuum line to the intake manifold is new.
Should I replace the booster? It definitely has some surface corrosion from the brake fluid but I've seen that before without any problems. (Pics attached)
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