Crunchy Brake Pedal?

[Vortech347]

This is the only way I can describe what my MM is doing.

When I push the brakes hard the pedal goes down and has a crunching/grinding sound.

Booster? Thats what I'm leaning towards. Are they MM specific?

[zr271cuda]

Mine is doing the same thing. Its kinda like air in the booster, but the car stops fine. I guess it stops fine cause its been that way for the 6 months that I've owned it, so I don't know any different.

[fastblackmerc]

Maybe the bushings need some lubrication?

[Vortech347]

Mine is doing the same thing. Its kinda like air in the booster, but the car stops fine. I guess it stops fine cause its been that way for the 6 months that I've owned it, so I don't know any different.

Exactly!

Which bushings are you referring to?

[mrjones]

Add mine to the list of stupid stuff that it does...

[fastblackmerc]

Exactly!

Which bushings are you referring to?

The ones that the brake pedal rotate on, under the dash.

[Marauderjack]

It's the boot on the plunger that goes into the booster....Ford had problems with this in CV's for years....only real fix is to cut the boot off or replace the booster!!!:argue:

You can try to lube it inside and it will be quiet for awhile??:rolleyes:

I cut the boot off of one of my CV's with no apparent ill effects......my Marauder hasn't done it....YET!!:shake:

[MMarauder03]

The ones that the brake pedal rotate on, under the dash.

^^^ +1 :o

[musclemerc]

Yeah I had the creeking pedal as well. Like Marauderjack said cut the boot. I just loosened it up a little with a exacto knife and the noise was history

[fastblackmerc]

Yeah I had the creeking pedal as well. Like Marauderjack said cut the boot. I just loosened it up a little with a exacto knife and the noise was history

How about just lubing the shaft that goes thru the boot?



I know.... I know.....

Lubing the shaft!!!

That's what she said!

[Marauderjack]

Ha Ha.....that will work but it is easier said than done......give it a try and report back!!??:cool:

[4play]

Why waste money on lube when you can just use spit :dunno:

[Vortech347]

I will try lubing the shaft. hahaha Thanks guys. I'll report back!

[tbone]

I will try lubing the shaft. hahaha Thanks guys. I'll report back!

No thanks.:puke:

[2vmodular]

i took pictures of a spare power brake booster & pedal box that were used in the 2003-2004 marauders. maybe these will give you some troubleshooting ideas.

http://images112.fotki.com/v589/photos/8/42438/8968139/PICT6732-vi.jpg

http://images47.fotki.com/v1399/photos/8/42438/8968139/PICT6734-vi.jpg

http://images116.fotki.com/v700/photos/8/42438/8968139/PICT6758-vi.jpg

http://images43.fotki.com/v1369/photos/8/42438/8968139/PICT6763-vi.jpg

http://images116.fotki.com/v716/photos/8/42438/8968139/PICT6767-vi.jpg

http://images112.fotki.com/v600/photos/8/42438/8968139/PICT6768-vi.jpg

http://images54.fotki.com/v552/photos/8/42438/8968139/PICT6780-vi.jpg

http://images43.fotki.com/v1505/photos/8/42438/8968139/PICT6812-vi.jpg

[MM2004]

This is exactly what mine has been doing for a while.

Couldn't find the right word to describe it until I saw this thread.

"Crunching" is a great description.

So,... would it be the boot, bushing(s) or both :confused:

My brake pedal also has quite a bit of travel in it.

Mike.

[2vmodular]

sounds like you've got two seperate problems. the pedal box and power brake booster aren't going to cause low brake pedal issues.

i'd try installing new brake pads on all 4 wheels and seeing if your brake pedal feel improves. if not, then try installing a new master cylinder. marauder owners are having these leak around the cup seals internally at really low mileage.

here's a recent thread about master cylinder problems:

http://www.mercurymarauder.net/forums/showthread.php?t=64956


My brake pedal also has quite a bit of travel in it.

[jonroe]

The ones that the brake pedal rotate on, under the dash.

Bingo! Same thing here. I had it in the Ford garage and that's what they found. Unfortunately, the lubing does not last long. It is quite annoying.

[2vmodular]

you'll get a minimal amount of lubricant inside the pivot shaft by spraying it externally. for a long lasting repair, you'd probably want to pull the pedal box out of the car and disassemble the shaft. this does not look like a fun job with the big spring there on the shaft.




Bingo! Same thing here. I had it in the Ford garage and that's what they found. Unfortunately, the lubing does not last long. It is quite annoying.

http://www.p71interceptor.com/powerpedals/powerpedalsback.jpg

[2vmodular]

there are more pictures of the pedal box used in the 2003-2004 marauders on this webpage:

http://www.p71interceptor.com/powerpedals/

the 03-04 marauders use the same pedal box & booster that the 2001-2002 crownvic/grandmarq/towncar with adjustable pedals did.