Cold "hooosh"... brake booster?
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Cold "hooosh"... brake booster?
When I start up to drive my 4Runner on these "cold" AZ mornings, I get a strange sound inside the cab.
It sounds like a vacuum leak. Thing is, if I apply the brakes even the slightest... it stops completely. Once everything is warmed up, no more "hooosh".
I don't seem to have any performance problems with either the motor of brakes. The 4Runner has done this for some time, but I always forget about it when the seasons change and the colder temps go away.
Any guesses as to the source?
It sounds like a vacuum leak. Thing is, if I apply the brakes even the slightest... it stops completely. Once everything is warmed up, no more "hooosh".
I don't seem to have any performance problems with either the motor of brakes. The 4Runner has done this for some time, but I always forget about it when the seasons change and the colder temps go away.
Any guesses as to the source?
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95.5-2004 Tacomas & 96-2002 4Runners
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07-20-2015 01:29 PM