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Old 02-20-2013, 02:59 PM   #11
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As I stated in my message I'd check the brake booster first but Diesel engines do not create vacuum so there is a vacuum pump needed to work the brake booster first thing I would eliminate Is the brake booster and vacuum pump then move on to the rest only if the booster and pump are good
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Old 02-20-2013, 02:59 PM   #12
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My .02 your brake booster is out
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Old 02-20-2013, 10:15 PM   #13
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As I stated in my message I'd check the brake booster first but Diesel engines do not create vacuum so there is a vacuum pump needed to work the brake booster first thing I would eliminate Is the brake booster and vacuum pump then move on to the rest only if the booster and pump are good
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My .02 your brake booster is out
brake booster doesn't cause the pedal to go down and lose pressure when applied. if the brake booster ere out, the brake pedal would be hard to push all the time. not when applied, then reapplied. brake booster is what amplifies the force you apply to the pedal. failed brake booster would be like having no power brakes.
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Old 02-20-2013, 10:22 PM   #14
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Just a FYI Knuckles bleed easer then brakes
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Old 02-20-2013, 10:23 PM   #15
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Once found the inside of the vacuum hose was collapsing and blocking any from moving the diaphragm. With your engine running--take the hose loose from the booster. If no change then there is a blockage.
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Old 02-20-2013, 10:27 PM   #16
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Oh and as for the brake system it gets worse when it's cold but if said I could stop on a dime is be lying...big time haha. It takes me a few seconds after slamming the brake pedal (like trying to stop before running into the back of someone ) and if I pump the pedal it gets hard as a rock and it won't even slow down for a couple seconds before eventually creeping to a stop. I checked my brake pads by poking my head in behind the tire on my front (disk) brakes and they seem to have a good amount left on them. I have yet to have a warm day here in New York to set aside to get in there and look at them. Also a few months ago I had my rear (drum) brakes off and I really can't be sure if I adjusted them back out far enough. From what I understand the majority of the braking power comes from the front brakes but I figure while I have my brake system under construction why not look at them as well. Also I'm pretty sure that I have a leak somewhere, any tips on how to go about tracking it down?....whew talk about sore fingers that was a damn essay lol
My .04 brake booster is out
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Old 02-20-2013, 11:04 PM   #17
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I've got something under my good that looks like a coffee can? I haven't looked to see where it goes to but could they be my vacuum connected to my brake system? It is rusted out on the bottom of it and it would do no good to be a vacuum
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Old 02-20-2013, 11:09 PM   #18
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I've got something under my good that looks like a coffee can? I haven't looked to see where it goes to but could they be my vacuum connected to my brake system? It is rusted out on the bottom of it and it would do no good to be a vacuum
that's just the vacuum reservoir for your vacuum accessories like the heater and A/C vents and doors and any other vacuum operated devices. has nothing to do with the brake vacuum system.
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Old 02-20-2013, 11:14 PM   #19
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Originally Posted by axxe55

that's just the vacuum reservoir for your vacuum accessories like the heater and A/C vents and doors and any other vacuum operated devices. has nothing to do with the brake vacuum system.
So does it need to be replaced? I don't have power locks or windows and my heat works just peachy....haven't tried the AC yet though dunno if it will come out cool or not
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Old 02-21-2013, 01:46 AM   #20
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Its not the door locks or windows that it helps control its the blend air door. The blend air door is moved by vacuum when you turn the switch from hot to cold. It moves the air to the heater core for heat or the ac system for cooling. With that being said yes it does need replacing but no it has nothing to do with your brake booster. The brake booster is mounted to the firewall and the master cylinder bolts to it. The vacuum line (should be about a 3/4 rubber hose) goes from the booster to somewhere on the intake.
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