Ok so hoping for some help. Grandmother has a 2011 journey AWD with disc brakes all around. they were in need of rear brakes. so she took it to her local shop intown. the did the work and when she got the vehicle back the brake pedal would bleed to the ground but it did have brakes. She took it back to the shop.
*Will do My Best To Explain Everything*
Once they had it back the figured it just needs to be bleed, (Didn't work)
Second they replaced the master cylinder factoring in the symptoms. (Didn't work)
Third they couldn't figure it out themselves so they towed it to Chrysler dealer and had them Diagnose, Was told it was the rear right caliper,
Replaced it and same issue continued.
They Gave up and told her sorry.
Week later she brought it to my shop.
First Looking over everything that had previously been done, in my opinion master cylinder did not look new, (Northern IL Vehicle you can tell if something is new or been effected be our Salty Winters)
So replaced master cylinder with new, Bleed the system and seemed to have a hard firm pedal with engine off and engine running.
Great figured it out and decided to Drive it for a day home.
Started it up to go to work the next day and pedal goes to floor. BUT IT STILL HAS BREAKS, just bleeds to the floor
Get to the shop and start some diagnosing.
Removed all wheels and did a brake test.
Found front right caliper frozen, replaced both front calipers.
After bleeding found right rear caliper is extending and then retracting completely with the release of brake pedal.
Replaced left rear caliper. So all Calipers have Been Replaced
For the hell of it I replaced all soft lines and brake booster.
Bleed system and Pedal still Bleeds to the floor but it has brakes. I'm Stumped
Sense the rest of the brake system has been replaced I went ahead and replaced the abs Pump/control Module.
Bleeding the Brake System Over and Over mechanically and electronically still no difference in pedal.
Checked all Brake System Fuses, All Good.
And of course all this work is no charge to my grandmother.
Any help would be appreciated!