Last post on Jan 15, 2011 at 9:26 AM
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Electrical, Engine, Fuel System, Fuel Efficiency (MPG)
#111 of 112 Re: Break don't work first time in Cold weather [thebignewf]
Jan 15, 2011 (9:17 am)
Does it feel like the power assist isn't working?
#112 of 112 Re: Break don't work first time in Cold weather [srs_49]
by Mr_Shiftright HOST
Jan 15, 2011 (9:26 am)
That's what I was thinking...that his power brake booster is somehow not getting enough vacuum (or has bled out the vacuum reservoir) at first start-up. If that's the case, I'd check for vacuum leaks but if it's some internal problem with the booster, that could be tricky to diagnose.
It would be interesting to note if the pedal "feels" different upon first application---very hard and unyielding.
It would also be interesting to see if you could "stab" the brake pedal a few times before starting out in the morning, to see if that corrects the problem.