Done SAS to my Ranger....Brake pedal goes all the way to the floor

driveoverit · 11-27-2007, 09:04 PM

OK I've bled the brakes...put new master cylinder in. Pedal goes hard when engine not running....but when engine is running pedal goes all the way to the floor...Oh yeah 9 inch rear end...so rear abs disconnected...new brakes lines pretty much everywhere
Its a 93 Ranger

I'm stumped

AKBroncoII · 11-27-2007, 09:19 PM

air in the line. You aren't bleeding properly.

**brendank** · 11-28-2007, 12:54 AM

Did you follow the procedure to bleed the master cylinder before you installed it?

driveoverit · 11-28-2007, 03:18 PM

yes i bled the master cylinder in the vice...I'm going to try to bleed the brakes again today and see what happens

driveoverit · 11-28-2007, 07:35 PM

ok i bled the brakes again and still it goes to the floor when its running(goes hard when its off)....could it be something to do with the Rabs module??? How about bypassing it??? Does it contain a residual check valve?

94STXRanger · 12-01-2007, 01:17 AM

Is the vacuum booster working properly?

driveoverit · 12-08-2007, 07:12 PM

i think you might be on the right track with the booster....when the truck is running and you press your foot to the floor the truck almost stalls out

94STXRanger · 12-09-2007, 12:57 AM

I would thoroughly inspect the booster. Leaks, hoses, check valves. I wonder if you could have got moister in there or something, or if that would even matter. WIth the truck off press the brakes and then hold them as you turn it on. It sould make the pedal eaisier to press. Thats an easy way to make sure its working. I guess its sinking to thefloor though so it must be.

driveoverit · 12-18-2007, 10:38 PM

i figured it out...it was the calipers hanging up on the steering knuckles....i have the chevy disc brake swap...there is a clearance issue between the two...i have since ground down the knuckle and a little bit off the caliper....

i think it was the backing plate flexing from being hung up on the knuckle therefore making the brake pedal go all the way to the floor

thanks for the suggestions

**Jspafford** · 12-18-2007, 10:48 PM

Thats the same thing that happened to me. I had accidently put in a pad wrong and it was compressing or something and causing the caliper to compress sideways.

AKBroncoII · 12-19-2007, 02:54 AM

Make sure that it's not a clearance issue with the rotor itself. Not all chevy 44 backing plates are the same. Different years had different hat sizes for the rotors. Not all will work for the swap if you kept the 5x5.5" pattern.

11-27-2007, 09:04 PM	#1
driveoverit New Member Join Date: Nov 2007 Location: Vancouver B.C Year: 1993 Make: Ford Model: Ranger Posts: 7 Rep Power: 0 iTrader: (0)	Done SAS to my Ranger....Brake pedal goes all the way to the floor OK I've bled the brakes...put new master cylinder in. Pedal goes hard when engine not running....but when engine is running pedal goes all the way to the floor...Oh yeah 9 inch rear end...so rear abs disconnected...new brakes lines pretty much everywhere Its a 93 Ranger I'm stumped Last edited by driveoverit; 11-27-2007 at 09:13 PM.
	Tweet

11-27-2007, 09:19 PM	#2
AKBroncoII Member Join Date: Aug 2007 Posts: 486 Rep Power: 12 iTrader: (1)	air in the line. You aren't bleeding properly.
	Tweet

11-28-2007, 12:54 AM	#3
brendank It's only money... Join Date: Aug 2003 Location: Saskatoon, Saskatchewan Year: 1993 Make: Ford Model: Ranger Posts: 633 Rep Power: 10 iTrader: (2)	Did you follow the procedure to bleed the master cylinder before you installed it? __________________ Blue 93 Ranger 4.0L 4x4 5spd, 38.5's on 16x10's EB coils, 6" Skyjacker Leafs, Belltech 6400's, Bilstein 5150's Fullwidth D60, Lockright, 5.38's, Dedenbear C's 14BFF, 5.38's, Detroit, Disc Braked 3" B/L, Dual batteries, 9500lb winch, Bushwacker cutouts
	Tweet

11-28-2007, 03:18 PM	#4
driveoverit New Member Join Date: Nov 2007 Location: Vancouver B.C Year: 1993 Make: Ford Model: Ranger Posts: 7 Rep Power: 0 iTrader: (0)	yes i bled the master cylinder in the vice...I'm going to try to bleed the brakes again today and see what happens
	Tweet

11-28-2007, 07:35 PM	#5
driveoverit New Member Join Date: Nov 2007 Location: Vancouver B.C Year: 1993 Make: Ford Model: Ranger Posts: 7 Rep Power: 0 iTrader: (0)	ok i bled the brakes again and still it goes to the floor when its running(goes hard when its off)....could it be something to do with the Rabs module??? How about bypassing it??? Does it contain a residual check valve?
	Tweet

12-01-2007, 01:17 AM	#6
94STXRanger Member Join Date: Aug 2007 Location: Kansas City Year: 1994,1965 Make: Ford Model: Ranger supercab, Mustang Coupe Engine: 4.0, 302 Posts: 769 Rep Power: 13 iTrader: (1)	Is the vacuum booster working properly?
	Tweet

12-08-2007, 07:12 PM	#7
driveoverit New Member Join Date: Nov 2007 Location: Vancouver B.C Year: 1993 Make: Ford Model: Ranger Posts: 7 Rep Power: 0 iTrader: (0)	i think you might be on the right track with the booster....when the truck is running and you press your foot to the floor the truck almost stalls out
	Tweet

12-09-2007, 12:57 AM	#8
94STXRanger Member Join Date: Aug 2007 Location: Kansas City Year: 1994,1965 Make: Ford Model: Ranger supercab, Mustang Coupe Engine: 4.0, 302 Posts: 769 Rep Power: 13 iTrader: (1)	I would thoroughly inspect the booster. Leaks, hoses, check valves. I wonder if you could have got moister in there or something, or if that would even matter. WIth the truck off press the brakes and then hold them as you turn it on. It sould make the pedal eaisier to press. Thats an easy way to make sure its working. I guess its sinking to thefloor though so it must be.
	Tweet

12-18-2007, 10:38 PM	#9
driveoverit New Member Join Date: Nov 2007 Location: Vancouver B.C Year: 1993 Make: Ford Model: Ranger Posts: 7 Rep Power: 0 iTrader: (0)	i figured it out...it was the calipers hanging up on the steering knuckles....i have the chevy disc brake swap...there is a clearance issue between the two...i have since ground down the knuckle and a little bit off the caliper.... i think it was the backing plate flexing from being hung up on the knuckle therefore making the brake pedal go all the way to the floor thanks for the suggestions
	Tweet

12-18-2007, 10:48 PM	#10
Jspafford Logan Andrew Feb 17, 2012 Join Date: Jan 2001 Location: Canal Winchester, Ohio Year: 1989 Make: Ford Model: Bronco II Engine: 2.9L Class: 4x4 Used For: Getting Passed Posts: 8,002 Rep Power: 10 iTrader: (15)	Thats the same thing that happened to me. I had accidently put in a pad wrong and it was compressing or something and causing the caliper to compress sideways. __________________ 1989 Bronco II, 2.9L, Manual Trans and T-case, Manual hubs \| 2004 Tahoe Z71, 5.3L 4L60E, AutoTrac 4WD, Leather, Bose, DVD, Loaded \| 2009 Silverado 2500HD Duramax/Allison Crew Cab Long Bed 5" MBRP Straight Pipe, EFI Live Tuned by Longhorn Fab Shop.
	Tweet

12-19-2007, 02:54 AM	#11
AKBroncoII Member Join Date: Aug 2007 Posts: 486 Rep Power: 12 iTrader: (1)	Make sure that it's not a clearance issue with the rotor itself. Not all chevy 44 backing plates are the same. Different years had different hat sizes for the rotors. Not all will work for the swap if you kept the 5x5.5" pattern.
	Tweet

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode