mustangmatt89
Full Access Member
So I have a 93 f250 7.3 idi. Over the winter I got an extremely hard break pedal. I figured it was just the booster since I saw the master cylinder leaking on it a little so I replaced both. I still had the hard pedal. Also my heating vents don't change until I get up in rpms driving and that is when I usually have one push with the power brakes, and then I am back to manual. What pressure should these things be operating at? I am thinking it is my vacuum pump. I hook a vacuum gauge to it and I have 5 ibs at idle, and close to 10 ibs if I rev the engine a little. Any suggestions?
Also this is the first time I've posted on here in a while. I posted a lot when I was redoing my truck a few years ago. This is an awesome forum!! Glad it is still here!!
Also this is the first time I've posted on here in a while. I posted a lot when I was redoing my truck a few years ago. This is an awesome forum!! Glad it is still here!!