Question about 1993 Cadillac DeVille

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1993 cadillac deville: caliper problem

If there is pressure build up in brake lines would that not lock out all brakes? My problem is with the RH front caliper only. How would I release the pressure from a single line? I bleed it but it bleeds slow. The master cylinder in this auto looks to be two, one to puit in fluid and a second one down by the radiator?

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  • dragnclick Jul 27, 2009

    Sorry for delay, Unsure of clasped hose? Problem is I step on brake and stop but the RH side caliper does not release pressure and stays locked. Replaced caliper because I thought it was a bad one. Within 10 mile drive it locked again. Wheel heats up and smokes. Will not release. Piston seems to be pushed out, rubber seal is also pushed out on one side. Pads are new and new style metal pads? Autozone. Please explain clasped brake hose as this is probably my problem? Thanks, mike in NH

  • mike loshbough
    mike loshbough May 11, 2010

    You have a clasped brake hose on that side



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On a 1993 Deville I believe that GM installed 2 seperate brake lines from LH and RH leading from the calipers so that if one went out at least you had stopping power in the other caliper. this was done as a safety feature because of past fatalities from previous accidents.

Posted on Jul 26, 2009


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Want to put new brake line in 1993 Cadillac Deville, need diagram.

no diagram need to bolts on the back side hole the caliper lossening both of these slide bolts out you will need a 6 inch c clamp and a 3/8 allen wrench, to take bolts out then be for removing the brake pads match up each pad, then take the c clamp and old brake pad a press in the caliper piston back repeat this process on replaceing the caliper and new pads. good luck.

Sep 13, 2013 | 1993 Cadillac DeVille

1 Answer

Brake fluid is leaking from what appears to be some type of small (index finger size) filter in the brake line under the drivers side passenger door. I've never heard of a filter in the brake line,...

i think what your referring to is a proportioning valve that regulates the pressure to the brake that the line goes to,this helps regulate brake pressure to all the wheels so they are the same during braking so there is no wheel lock up while the other wheels don`t lock up.this is a common place for the fluid to leak out when the car gets old enough due to environmental conditions such as winter driving,corrosion,wet weather (lots of rain),salt conditions(living near salt water),it will have to be replaced and the brake lines should be checked for condition as they may need replacing as well.

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1 Answer

Drivers side front brake pads sticking, smoking bled allready no help

Sounds like you need new calipers and or the rubber portion of the brake line that goes from the steel brake line to the caliper. This part of the brake line (rubber part) can colapse inside acting as if there is a one way valve in the line keeping pressure on the caliper piston as if the brakes are applied.

Nov 28, 2010 | 1991 Cadillac DeVille

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1993 jeep cherokee

It also sounds like a more likely problem is a seized caliper on the left side. If a caliper seizes, the braking system transfers the pedal pressure to the other caliper thus, the working caliper locks up. Pull both front wheels and look carefully at the wear on the pads. Both wheels should have the same amount of wear. If one side is worn more than the other, the side with the least wear is seized and needs to be changed.
Never heard of a hydraulic repostioning valve, but maybe with ABS there is one. I do know of a proportioning valve which apportions brake pressure front to back and also blocks braking to front or back in the event of brake line failure. Maybe see which he is talking about, should be able to explain the difference. Hope this helps.

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1 Answer

RH caliper keeps locking out: 1993 Cadillac Deville

check to see if there may be some pressure buillt up in the brake lines and also could be having a problem with your master brake cylinder too.

Jul 26, 2009 | 1993 Cadillac DeVille

1 Answer

Left front brake caliper hanging up on 1991 Cadillac Deville.

Flex line at caliper (hose) will cause that as well, even if it looks good from outside, they tend to collapse inside & restrict flow causing caliper to hang up.

May 31, 2009 | 1990 Cadillac Deville

1 Answer

I need a diagram of the entire breaking system on a 1993 ford taurus i just replaced a rear line and i think i stripped the extention piece i had to add to the end of the break line. the one that goes into...

here is a 96 taurus

Item Part Number Description 1 2C296 Anti-Lock Brake Tube 2 2C219 Anti-Lock Brake Module 3 2005 Power Brake Booster 4 2263 Front Brake Tube 5 2B091 Brake Pressure Control Valve 6 2140 Brake Master Cylinder 7 2B547 Brake Load Sensor Proportioning Valve 8 N802191-S60 Bolt 9 2L568 RH Rear Brake Tube 10 2L569 LH Rear Brake Tube 11 2C287 Brake Fluid Distributor Tube 12 N808531-S301 Bolt 13 — Front Side Member 14 N802324-S56 Bolt 15 18124 Front Shock Absorber 16 2B121 Front Disc Brake Caliper 17 2078 Front Brake Hose 18 2264 Front Brake Tube 19 2553 Rear Disc Brake Caliper 20 2A442 Rear Wheel Brake Hose 21 N808728-S60 Bolt 22 — Side Rail 23 N802324-S60 Bolt
Brake Load Sensor Proportioning Valve

Item Part Number Description 1 2B547 Brake Load Sensor Proportioning Valve 2 — Body 3 N802191-S56 Bolt (2 Req'd) 4 2L568 Brake Tube Assy 5 2L569 Brake Tube Assy 6 2265 Brake Tube Assy 7 2B255 Brake Tube Assy 8 5500 Rear Suspension Arm and Bushing 9 W611634-S301 Bolt A — Tighten to 11.4-15.6 Nm
(8-12 Lb-Ft) B — Tighten to 10-14 Nm (7-10 Lb-Ft)

Brake Hose, Rear —Drum

Item Part Number Description 1 — Rear Side Rail 2 2L569 Rear Brake Tube 3 N602324-S60 Screw 4 N611193-S60 Screw 5 2C023 Left Hand Rear Hose and Connector 6 2210 Rear Drum Brake Backing Plate 7 18125 Rear Shock Absorber 8 2267 Rear Brake Tube A — Tighten to 16-20 Nm (12-15 Lb-Ft)

May 10, 2009 | 1993 Ford Taurus

1 Answer

Brake bleeding

your line is clolapsed

Dec 17, 2008 | 1993 Mazda 626

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