Went shopping, parked, came back to the truck, no brakes pedal went right to the floor. Pumping gave me a little pedal and since I was only 3 miles from my dealer, nursed it in. Left it at dealer they called later that day to say they could find nothing wrong, brakes work perfect.. The next morning they went to move it and the pedal went to the floor (thank goodness).. They put on a new master cyclinder, hope this is the problem???

 

Wow. Not something you want to have happen while driving. You may want to let the NHTSA know about it, in case there's a chance it could happen to someone else.

http://www-odi.nhtsa.dot.gov/ivoq/

 

hey i lost my brakes too. i was driving and they went to the floor and i ended up almost in a ditch. i had the truck towed back to ford they said it was the master cyliner also, but my brakes still was not right they would slip at stop lights and the paddle would go half way to the floor. and they squeaked to high heaven. finally the dealer did a buy back my truck and i picked another one off the lot. they couldn't ever figure out what was wrong with the brakes. also there is going to be a recall on the rear ends on these trucks. they have techs working on a fix right now. good luck on the brakes they sure scared me!

 

Lost my brakes this week (2004 FX4 SCREW) Went through an intersection like Sherman went through Atlanta. Had to get towed to a Ford dealer. First they suspected the MC, now they are telling me a trouble code came up for the ECU.

she's now sitting in their lot for the past 3 days waiting for parts.

 

What are the build dates on the trucks that are losing their brakes?

 

Mine was March 2004

 

That is really scary. I hope you all do report your problems to NHTSA, you may end up saving some lives.

 

Well i am not sure what day or when my truck was made. ford bought it back from me. this truck almost KILLED me. the brakes went out on me and was never right after that. ford is going to recall the rear ends on these trucks too they have tech. working on the howling they make. i was scared to drive this truck i had and still to this day after 2 months it is still sitting in ford parking lot on the service side . I guess they will never figure out what is wrong with. I now have a new ford f-150 and so far so good i have 1,500 miles on it and all is ok.

 

This brake problem is absolutely unbelievable, as are all these other leaks, vibes, clunks and about everything else (on a new vehicle). I'm still wondering why there is no pedal when this problem suddenly occurs- I mean this is a first class invitation to die. I'm still totally baffled as to why the dual reservoir master cylinder / brake system does not prevent this from happening. The way it sounds, going down the road in our new trucks is similiar to playing Russian Roulette. Shouldn't there be a recall on this problem over and above all others?

 

MWH

When I asked the Ford tech what the ECU has to do with the brakes, he said that it does have an effect on the brakes. If you look at the master cylinder, there is a wire harness coming out of it. i guess if the ECU fails, then the brakes fail. Sounds like a **** poor system to me. At least with a totally hydraulic system, there is a 2 part master cylinder.
i'm just glad I wasn't doing 70+ on the Hwy at the time.
Oh BTW, my truck ws built in the Kansas City plant.

 

man would suck if there were cars at an intersection and you were going about 40-50mph thinking your brakes would stop you

 

The ECU doesn't have anything to do with brakes. You can go down the road with no power and still have brake. Brakes work with pressing down the brake pedal and that pushes the plunger in the MC and that distriputes fluid to the lines. I think the deal was telling you that so you would leave thinking it's nothing bad.

 

i kind of figure that after these so called techs replace the ECU, they're still not gonna have my brakes working. I'll see what kind of excuse they come up with next. I'm going to see my dealer on Monday. i know the shop foreman and I'll talk to him.

 

Fcal--just about a year ago I looked at the '04 Chevy trucks. Before I drove one, I looked under the hood, the salesman quickly pointed out a brake vacuum gizmo that he said was a new standard feature that always provided vacuum or whatever for the brakes for emergency stops. I really didn't completely understand this because I thought they had brakes mastered long ago-but, this deal has always been in the back of my mind. So, just maybe this new device is what's needed on the F-150s for the same reason.(they sure need something for a backup!!)

 

Any idea how to report this?

Mine went out about a week after we got it, MC and "some other hydraulic stuff "

My door sticker says 7/04.

I count about 4 of us who have had the same thing happen.