Mikes91
Full Access Member
Would a vacuum pump issue cause brakes to lock?
Reason I ask is this...
In the morning, after the truck's been sitting overnight, the brake pedal often is very firm the first time or two I apply the brakes.
If I apply the brakes more than just a touch, the brakes will lock.
Tonight I tried and tried to get the brakes to lock (truck had been driven earlier in the day), and the problem was much less apparent.
As a matter of fact, I'm thinking this: when Ford replaced the A/C compressor last week, they may have torqued the vacuum belt a little tighter when they installed a new A/C compressor belt. If that is the case--if the vacuum pump is able to deliver more power to do its job--perhaps this is why the brake lock issue seems less later in the day.
Of course, that doesn't fix the firm pedal in the mornings.
Does that sound like a bad vacuum pump? Does the locking brakes sound like something related to a weak vacuum pump?
In the mornings, it is no kidding feather touch on the brakes or the wheels will lock.
Thank you,
Mike
Reason I ask is this...
In the morning, after the truck's been sitting overnight, the brake pedal often is very firm the first time or two I apply the brakes.
If I apply the brakes more than just a touch, the brakes will lock.
Tonight I tried and tried to get the brakes to lock (truck had been driven earlier in the day), and the problem was much less apparent.
As a matter of fact, I'm thinking this: when Ford replaced the A/C compressor last week, they may have torqued the vacuum belt a little tighter when they installed a new A/C compressor belt. If that is the case--if the vacuum pump is able to deliver more power to do its job--perhaps this is why the brake lock issue seems less later in the day.
Of course, that doesn't fix the firm pedal in the mornings.
Does that sound like a bad vacuum pump? Does the locking brakes sound like something related to a weak vacuum pump?
In the mornings, it is no kidding feather touch on the brakes or the wheels will lock.
Thank you,
Mike