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2010 town and country. had locked up calipers on the front,

Customer Question
2010 town and country...

2010 town and country. had locked up calipers on the front, replaced both front calipers and the master cyl do to a sinking brake pedal. Now no matter how many times we bleed the brakes pedal still sinks to the floor.

Mechanic's Assistant: Have you tried cleaning and oiling the brake pedal's pivot under the dash?

No wouldn't think that would cause a spongy/sinking pedal?

Mechanic's Assistant: Are you fixing your Town and Country yourself? What have you tried so far?

Im actually a service manager at a corporate repair shop. we've pretty much done everything we could think of

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No i can explain more if questions are asked

Submitted: 8 months ago.Category: Dodge
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Answered in 33 minutes by:
8/3/2017
Dodge Mechanic: Jaybird61, ASE Certified Master Technician replied 8 months ago
Jaybird61
Jaybird61, ASE Certified Master Technician
Category: Dodge
Satisfied Customers: 2,311
Experience: Automotive Instructor at Palm Beach State College
Verified

Hi, My name is Jay

You have either got a defective master cylinder or got some sludge into the internal rubber cup seals. Replace the master cylinder again or take it apart and clean the internal parts.

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Customer reply replied 8 months ago
I've put 3 different new masters, all bench bleed correctly. All the calipers, pads and rotors are new and the booster. I've done the IPB "integrated parking brake" bleed procedure, also did the abs bleed with the soulus. I'm lost.
Dodge Mechanic: Jaybird61, ASE Certified Master Technician replied 8 months ago

I am opting out to see if another expert may have an idea. Please do not respond so question does not lock to me and another expert will contact you.

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Dodge Mechanic: david craig, Auto Mechanic replied 8 months ago
david craig
david craig, Auto Mechanic
Category: Dodge
Satisfied Customers: 5,178
Experience: owner/mechanic at 3D Automotive
Verified

Hi Im David, check the calipers and make sure the bleeders are above the brake lines

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Customer reply replied 8 months ago
All the breeders are on top. Even did 2 sets of rear calipers do to IPB possibly being faulty causing air to be caught.
Dodge Mechanic: david craig, Auto Mechanic replied 8 months ago

ok, thats was my concern. also I have seen where the brake hoses deteriorate internally and a piece will get stuck inside and act like a check valve and not let fluid flow both ways

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Customer reply replied 8 months ago
I'm getting pretty good pressure on all 4. Even power bleeding. But hoses, lines and abs module are the only original components left.
Dodge Mechanic: david craig, Auto Mechanic replied 8 months ago

See if you can watch the hoses when the vehicle is off and pumping the pedal. see if they swell

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Customer reply replied 8 months ago
Will do. Apparently these vans have somewhat shady brake systems. But brakes are brakes. Never had this problem before.
Dodge Mechanic: david craig, Auto Mechanic replied 8 months ago

Ive had this over and over and it seems it always something different.

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Customer reply replied 8 months ago
Ended up being the abs pump....
Dodge Mechanic: david craig, Auto Mechanic replied 8 months ago

once again its always something different. Im glad you got it figured out.

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