Brake problem again!

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Jan 18, 2012 | 06:48 PM

#46

dougbrown

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From: Crapy southern New Jersey

Found a 2003 7.3 cc 4x4 I'm temped to go look at if I cant figure this out.

Jan 18, 2012 | 08:13 PM

#47

oldbird1965

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From: AZ

Maybe this has been mentioned before but the insides of the brake lines can deteriorate and cause blockage of brake fluid flow. Did you replace them?

Jan 18, 2012 | 08:28 PM

#48

dougbrown

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No I didn't but looked them over very well.

Jan 18, 2012 | 09:12 PM

#49

Brown Falcon

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From: Thomasville, GA

Quote:

Originally Posted by dougbrown

Brown does the unit come with the pin that push on the MC?

As far as I know yes... I havn't done the swap yet myself. I just researched it and found the part numbers. It's supposed to come with the rod for the brake pedal.

Jan 18, 2012 | 09:13 PM

#50

dougbrown

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Thanks man.

Jan 18, 2012 | 09:19 PM

#51

oldbird1965

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I've heard a lot of conplains that the rod doesn't come with it. Guys were making their own.

Jan 18, 2012 | 09:33 PM

#52

Brown Falcon

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From: Thomasville, GA

It depends on where you order it Glenn. The guy I talked to at autozone said it came with it... I couldn't look at the actual unit because they have to order it, not kept in stock.

Jan 20, 2012 | 10:00 PM

#53

dougbrown

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Brown I don't think the auto zone one come with it. I order mine tonight, should be here tomorrow. It remaned and hope it good, Also got a new MC I have to pick up tomorrow, going to take it apart and clean it before I try it.

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Jan 21, 2012 | 05:16 PM

#54

Brown Falcon

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From: Thomasville, GA

Well I hope it works for you. Did you get another stock MC or did you get the bigger F-superduty one that went with the hydroboost?

Jan 21, 2012 | 05:23 PM

#55

dougbrown

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From: Crapy southern New Jersey

Nope I just got the stock one and going to mod it. I should have dome answers tomorrow.

Jan 21, 2012 | 05:42 PM

#56

FARM69

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From: Kearney, Nebr

So it's pulling 45 lbs of vac at idle? Why so high?

Jan 21, 2012 | 07:36 PM

#57

madpogue

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From: Madison, WI

45 kilopascals (kPa), maybe? Atmospheric pressure is 15-ish psi, so even if it's measured absolutely (as psi below atmospheric), it can't possibly be more than 15. Even in inches Hg, absolute vacuum is only 29.something. According to this chart: Vacuum Pressure - Converting Units , 45 kPa is about 13 in Hg, which is below spec of 17-21.

Jan 21, 2012 | 08:18 PM

#58

dougbrown

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From: Crapy southern New Jersey

I'll take a picture of the gauge tomorrow. Says vacuum psi.

Jan 22, 2012 | 12:27 PM

#59

dougbrown

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From: Crapy southern New Jersey

Ok so I put another new mc in it day and still has a soft pedal. I'm going to try driving it and see how she stops. I was wrong on vacuum. It floats between 15 and 18 psi. When I pump the brakes I can pump it down to about 5. Should this happen? When I get home I will post up a vid and pics.