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After replacing the calipers on my car and bled the brakes by hand, the brake pedal went to the floor?

Tiny
DAVENOOB
  • MEMBER
  • 2005 FORD FIVE HUNDRED
  • V6
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
So, I changed the calipers on my car and bled the brakes by hand. One person pumping brake while I loosen and tighten the bleeder valve. After I did this pedal went to the floor. I started front tire brake reservoir side then next front then rear on res side than last farthest from res. Is it possible a big air bubble is trapped in there and I need to really pump even once fluid comes out? Thanks, please let me know if I need to explain better.
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Thursday, October 17th, 2024 AT 7:43 PM

12 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

When you bleed brakes, start at the wheel furthest away from the brake reservoir (right rear). Then go left rear, right front, and then left front (closest to the reservoir).

Here is a link that explains how:

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

Keep in mind, if the brake pedal goes to the floor, the master cylinder may have been damaged. Over time, corrosion accumulates in the plunger bore. In the area that the pedal travels, it stays clean. If the pedal goes to the floor, it can damage the plunger because of the corrosion in the area not normally traveled by the plungers.

Try the bleed I mentioned below. Also, let me know if you get any brake pedal if you pump the brakes a few times.

Let me know.

Joe
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Thursday, October 17th, 2024 AT 8:15 PM
Tiny
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Thanks, I've been taught wrong!
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Friday, October 18th, 2024 AT 4:59 PM
Tiny
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Hi,

No problem whatsoever. Let me know how things work out for you or if I can help in any way. I'm interested in knowing.

Take care,

Joe
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Friday, October 18th, 2024 AT 9:22 PM
Tiny
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Will do.
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Saturday, October 19th, 2024 AT 6:25 PM
Tiny
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I bled brakes starting from back and yep big air bubble. If the brakes haddent been bled correctly can that cause the caliper piston to not pull the brake back properly? Like make the piston be locked applying pressure? If so if I push the piston back and rebleed will they function properly? Thanks
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Tuesday, October 29th, 2024 AT 2:58 PM
Tiny
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Hi,

Sorry for the delay. No, the air won't cause that to happen. It could be a few things. Here is what I need you to try.

Have a helper pump the brake so the affected caliper won't release. Then, open the bleeder to see if the caliper releases. If it does, replace the rubber brake hose on that caliper. If it still doesn't release, either the caliper piston is stuck or the slide pins or brake pads are stuck. Try that and let me know the results. Once I know what you find, I can further direct you.

Take care,

joe
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Thursday, October 31st, 2024 AT 6:27 PM
Tiny
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Cool thanks I just changed the calipers so maybe not that, but I will check the pins as I have the lube for them. The hose that goes from the caliper to the metal brake line, right?

Also, I don't get the first sentence. If I release the bleeder that should make the piston pull back? So, have a helper push the brake down and when it's all the way down then release the bleeder and the piston is supposed to retract right? Also lube up the pins. The rubber hose doesn't come with the caliper that might be good to replace anyways. Thanks again. I will hit you up if I have any more questions and let you know if it worked.
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Thursday, October 31st, 2024 AT 10:29 PM
Tiny
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Hi,

If the rubber hose is preventing the return of brake fluid to the master cylinder, opening the bleeder will allow the brake to release. Basically, you are providing a different route for the fluid to release. If it doesn't release, then it could be one of the other things I mentioned.

Let me know. Hang in there. We'll get it fixed.

Take care,

Joe
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Friday, November 1st, 2024 AT 9:23 PM
Tiny
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Okay, so I got the line and replaced it. Also pushed the brake while caliper was off rotor, and it pushed put yay! It did not, however, pull back in. Also rebleed brakes after replacing line and still not pulling back. I've replaced this specific caliper 3 times since Nov 2023 and it's done the same thing every time. Locks up gets whole tire hot just a mess. I've replaced the wheel hub assembly last time I did this as well. I've read that there might be air in the abs solenoid and I need someone with a special tool to release the air in the system. Does that make any sense or apply to a car this old?
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Monday, December 16th, 2024 AT 9:01 PM
Tiny
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Hi,

If you replaced the hose and the brake applies but doesn't release, have you inspected all steel hoses? Also, does the caliper release when you open the bleeder?

As far as the caliper springing back when the pedal is released, that isn't what happens. Pressure is released from the brake pads. You won't see them moving back.

Let me know. As far as the bleed procedure is concerned, there isn't an automated bleed for this vehicle. Also, if there was air in the system, it wouldn't cause the caliper to hang up. It would likely cause a spongy brake pedal.

Do me a favor. Send me a pic of the caliper in question. Also, due to the complexity of the fluid path within the rear integral parking brake calipers, it is necessary to press and release the parking brake during the bleed procedure. Once the rear caliper is bled manually and the bleeder tight, it is recommended actuating the parking brake five times.

Let me know.

Joe
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Tuesday, December 17th, 2024 AT 6:52 PM
Tiny
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Nope I didn't do that with the parking brake. I followed your link on bleeding starting from caliper farthest from rez to closest. I had a helper pressing brake. Now that I changed the brake line when I was rebleeding brake fluid would come out of said caliper but as a drizzle not a jet like normal. When I tested the piston it was completely off the rotor. Then screwed it back in all the way installed and pushed brakes and it locked no wheel rotation nothing. No pressure released. I've had 2 of these same cars and the rear calipers have always been a pain.
However do you have a link for how to bleed the ebrake? I had no clue about that at all. I'll send I pic when I get home tomorrow. What part of the caliper do you want to see?
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Tuesday, December 17th, 2024 AT 10:40 PM
Tiny
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Hi:

I attached the directions below from my manual. Note that it does indicate using a scan tool, but that is if the HCU was replaced.

I hope this helps. Let me know.

Joe

See pics below Please ignore the next to the last pic. That was accidentally added and I can't delete it.
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Thursday, December 19th, 2024 AT 5:49 PM

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