• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

Big problems


MX174

New Member
Joined
Oct 24, 2007
Messages
2
Reaction score
0
Points
0
Age
34
Transmission
Automatic
What I have is a 90 Bronco II. Ive put a full size d44 in it and a 9" in the rear. I have everything finished except the brakes. Ive ran all new lines and put a new master cylinder on it. When you bleed the brakes with the engine off it has good pressure on the pedal. Once you start it the pedal goes to the floor and I dont have any brakes. They have been bled numerous times. Any ideas? :dunno:
 


thegoat4

thegoat4

New Member
Joined
Aug 12, 2007
Messages
613
Reaction score
6
Points
0
Vehicle Year
1998
Make / Model
Ford
Transmission
Manual
Sounds like something in the system has too much give to it. Did you adjust your drum brakes? Adjust them out until they drag, then back off just enough that they don't anymore.
 

MX174

New Member
Joined
Oct 24, 2007
Messages
2
Reaction score
0
Points
0
Age
34
Transmission
Automatic
I havent adjusted them yet but i will try that. Thanks.
 
lil red

lil red

New Member
Firefighter
Joined
Oct 14, 2007
Messages
1,062
Reaction score
2
Points
0
Location
Dirty Jersey
Vehicle Year
94
Make / Model
Ford
Engine Size
4.0
Transmission
Manual
no, pump them and have somebody watch under the truck
my truck had that same problem, and it was a leak in a line, or mabe a bad booster
and if it does start to feel better, it was just that your brake cylinder was in too far and you just adjusted it out to the drum
 

High Desert Ranger

New Member
Joined
Aug 8, 2007
Messages
247
Reaction score
0
Points
0
Age
49
Location
High Desert, Calif
Vehicle Year
1987
Make / Model
Ford
Transmission
Manual
You also have to realize that the D44 and 9" use bigger brakes than the stock bronco II. Larger piston and large wheel cylinder. This could be part of your problem.

Also check that you haven't swapped caliper sides and have the bleeders facing down.

You got to realize that you might not be able to press the pedal hard enough to find out if there is air in the system but the power booster can provide the additional effort to compress the air in the system.

Worse comes to worse either use a pair of hose pinch off pliers or needle nose vise grips and clamp down on the rubber brake hoses one at a time, than try again with the vehicle running and see if (with the hose clamped in either the front left, front right or rear) if your pedal is good.
 
chico4554

chico4554

New Member
Solid Axle Swap
Joined
Aug 10, 2007
Messages
577
Reaction score
2
Points
0
Age
37
Location
CT
Vehicle Year
1993
Make / Model
Ford
Engine Size
3.0
Transmission
Manual
im having this problem as well right now. I swapped in a 44 front. The pedal is good when bleeding but when i drive the truck, the pedal goes down far. The brakes do work though. The brakes were fine when i started the swap, so i dont think its the drums in the rear. Ive bled them a few times already.
 
You must log in or register to reply here.

Sponsored Ad


Sponsored Ad

Staff online

Members online

Total: 670 (members: 8, guests: 662)

Today's birthdays

Member & Vendor Upgrades

For a small yearly donation, you can support this forum and receive a 'Supporting Member' banner, or become a 'Supporting Vendor' and promote your products here. Click the banner to find out how.

Latest posts

Truck of The Month


Shran
April Truck of The Month

Recently Featured

Want to see your truck here? Share your photos and details in the forum.

Follow TRS On Instagram

Latest Album Photos

Hunters
20240409_190831.jpg
20240409_190818.jpg
20240409_180824.jpg
20240409_182648.jpg
20240409_181010.jpg
20240408_175026.jpg
99 Ranger
20200706_161414.jpg
20240207_155117.jpg
20240207_155111.jpg
20240207_154537 - Copy.jpg

TRS Events

25th Anniversary Sponsors

Check Out The TRS Store


Sponsored Ad


Sponsored Ad

Sponsored Ad


Amazon Deals

Top