kalle3507 Posted September 30, 2018 Report Share Posted September 30, 2018 I have a 2008 Edge FWD that sat for a month while awaiting parts for the airbag recall. While taking it to the dealership to get fixed, I noticed the brakes were a bit mushy/spongy and had a "metal scraping feel to it" before the pedal recovered to normal press. I took the front DR caliper off (to start) and I notice the rubber sleeve for the lower caliper bolt was dry rotted and came apart when removing the bolt. I replaced the boot (loaded with grease) all the metal clips (the hardware kit came with all) and put everything back thinking that was the issue. Took off down the road and by about mile 1-2, same thing again....mushy/spongy metal grab feel then the pedal comes back to normal level. I wanted to rule out air in the lines, so I bled all 4 calipers and took off down the road and again, at about 1-2 miles same thing all the sudden. I came home and loosened the caliper bolts and noticed that this time, the calipers didn't need compressing to remove (both front calipers) as I was able to remove with a very little effort. At this point my options are master cylinder (most likely by the symptoms) or the brake booster. They are both a pain to get off, even more if its the brake booster as I have to pull the master cylinder, wiper arm and a several other brackets off. Has anyone else ever ran across this and may have a solution as I am out of straws to pull. Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted October 1, 2018 Report Share Posted October 1, 2018 Usually the brake booster that fails,not to say the MC has not failed in your Edge, but statistically the odds are on the BB. As far as replacing only the BB, you can swing the MC out of the way, you do not have to remove it. You can look up autom8r's post on his replacement to get an idea of what you are in for. And keep a new replacement stoplamp switch handy. All too often this gets destroyed during the DIY replacement process. Does the brake fluid look clean? Symptoms are similar to having dirty fluid in the system. Quote Link to comment Share on other sites More sharing options...
kalle3507 Posted October 1, 2018 Author Report Share Posted October 1, 2018 It looked a little discolored. Not the black/rusty color that indicates needs to be flushed. However, as I am asking for help, I will do a full flush and see if that helps..that's a quick and cheap t-shooting step. Thank you! 1 Quote Link to comment Share on other sites More sharing options...
kalle3507 Posted October 3, 2018 Author Report Share Posted October 3, 2018 Flushed the fluid and same results. I hesitant to call it the BB since there doesn't seem to be an vacuum loss to the engine, but I ordered a MC yesterday and plan on replacing it later today and will update this thread. 1 Quote Link to comment Share on other sites More sharing options...
IWRBB Posted October 3, 2018 Report Share Posted October 3, 2018 I'd throw a new booster in here while you are at it. Ford part is only $100. 1 Quote Link to comment Share on other sites More sharing options...
kalle3507 Posted October 7, 2018 Author Report Share Posted October 7, 2018 I replaced the master cylinder and while I doing that i ripped the BB boot and replaced it. After i got everything back together, the same thing and I have no more bullets left in the chamber. All I can think of is that some where I'm getting air in the line or a vacuum hose is messed up. I am not leaking any fluid, but the back calipers pulled right off without any effort once the bolts were removed. Any tips or suggestion on tracking a leak in either the vacuum o system or brake line itself? Quote Link to comment Share on other sites More sharing options...
kalle3507 Posted October 14, 2018 Author Report Share Posted October 14, 2018 So to anyone that may have been following this for a resolution, it was the ABS Module. The part itself runs 150-200 online and upwards of 700-800 from Ford. I pulled one off an 08 edge at a junkyard and all brake issues resolved. If not sure what to look for, follow the lines out of the MC and you'll track it down. You have to remove the Battery and Tray to get to it. 1 Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted October 15, 2018 Report Share Posted October 15, 2018 Are you saying that the ABS module caused mushy, low peddle brake problems? Quote Link to comment Share on other sites More sharing options...
kalle3507 Posted October 16, 2018 Author Report Share Posted October 16, 2018 (edited) Replacing it fixed the issue for me. I found a video on youtube this guy had all the same symptoms and changed all the same things I did and after he replaced the module, it fixed his. Its a Flex, but same issue so I figured why not.... worked like a charm for me as well. Here is the part # for mine and I found that its the same part on 08-11 Edge and fits at least an 08 Lincoln MKX Edited October 16, 2018 by kalle3507 1 Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted October 17, 2018 Report Share Posted October 17, 2018 Good info, thank you. Quote Link to comment Share on other sites More sharing options...
IWRBB Posted October 17, 2018 Report Share Posted October 17, 2018 Just FYI, there are companies that repair the ABS modules too. Eventually there are no new ones left, so you have to get them rebuilt if you drive something that's relatively older. 1 Quote Link to comment Share on other sites More sharing options...
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