Brake Problems - FordTough.ca - Home of Canadian Ford Truck Enthusiasts
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post #1 of 39 (permalink) Old 04-08-2013, 07:30 AM Thread Starter
 
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Brake Problems

I'm wondering if anyone else has had this issue or heard of it. I did a quick google search but haven't found anything yet.

This has happened to me 5 times in total now...three in the last three days. I go to back out of my driveway, and while moving in reverse, I get about 30 feet and the brake pedal goes rock hard. Today was the worst as I only got about 15 feet before it went hard. And yesterday when it happened, I felt a grinding noise, which sounded/felt like the ABS had kicked in.

So clearly I'm losing the vacuum assist while reversing...but once it happens and I go forward, stopping effort is fine. I only seems to happen once a day, usually in the morning.
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post #2 of 39 (permalink) Old 04-08-2013, 07:37 AM
 
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I know, I know, I know. Ford brakes are not engineered correctly, they're shit just like the rest of the truck.

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post #3 of 39 (permalink) Old 04-08-2013, 08:17 AM Thread Starter
 
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haha.

I do have to say that the brakes actually do work very well (in the forward driving position). It stops very well for a 6000+ vehicle. And the wear on the brakes has been excellent too. When I had them checked after one year of service, they still had 80% life left.
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post #4 of 39 (permalink) Old 04-08-2013, 12:42 PM Thread Starter
 
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Okay...we'll find out tomorrow. Going into the shop to get checked.
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post #5 of 39 (permalink) Old 04-08-2013, 07:24 PM
 
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Are they drums on the rear? If so then thats why. Get your foot off the brake and on the throttle. Anyone who doesn't stop for you has no respect for Fords and deserves to get hit.

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post #6 of 39 (permalink) Old 04-08-2013, 08:17 PM
 
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Seems like Ford always has an issue with brakes no matter what generation of F 150 when you do a search LOL. I personally.....(knock on wood)..... have never expirienced any brake issues with any of my Fords that i have had.

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post #7 of 39 (permalink) Old 04-08-2013, 10:03 PM
 
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3.5 turbo? They have an aux vacuum pump underneath the l/front headlamp assy. I have done only one which took a dump on its own, and I have done two others on trucks with collision damage.

The pump cycles on and off via a command from the ABS module, which in turn monitors the BOO switch and the booster vacuum switch. Testing is easy for a dealer tech - there is an output state control PID for the pump using IDS. Command it on and check for VBatt - ground is virtually straight to the frame.

Common symptom for a bad pump is a hard pedal (especially for the first 30 seconds after start up) and that 'abs' sensation you're complaining of.

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post #8 of 39 (permalink) Old 04-09-2013, 06:35 AM Thread Starter
 
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Quote:
Originally Posted by Varsity Tyler View Post
Common symptom for a bad pump is a hard pedal (especially for the first 30 seconds after start up) and that 'abs' sensation you're complaining of.
Thank you, this does make sense. I think I've seen that pump too when I had the head lights out...I was wondering what that thing was.
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post #9 of 39 (permalink) Old 04-09-2013, 07:57 AM
 
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Quote:
Originally Posted by SVT4MT View Post
I know, I know, I know. Ford brakes are not engineered correctly, they're shit just like the rest of the truck.

Press on regardless!
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post #10 of 39 (permalink) Old 04-09-2013, 03:18 PM Thread Starter
 
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Well, apparently it falls under TSB 11-10-24. Don't know if the pump is defect yet as I haven't seen the invoice, but they are replacing my brake pads. Kinda a shame this happened now and not in another year, cause there's probably at least 60% pad life left. Oh well.

TSB 11-10-24

10/27/11

HARD BRAKE PEDAL FEEL DURING NORMAL BRAKING

FORD:
2011 F-150

ISSUE
Some 2011 F-150 vehicles built on or before 8/23/2011 may exhibit a hard brake pedal feel during normal braking with no reduction in braking effectiveness and no brake warning indicators or diagnostic trouble codes (DTCs) present.

ACTION
Follow the service procedure to correct the condition.

SERVICE PROCEDURE

1. Perform brake booster component test procedure. Refer to Workshop Manual (WSM), Section 206-00. Does brake booster operate correctly?

a. Yes - proceed to Step 2.

b. No - do not continue with this article. Perform normal diagnostics. Refer to WSM, Section 206-00.


2. Is the vehicle equipped with a 3.5L gasoline turbocharged direct injection (GTDI) engine?

a. Yes - proceed to Step 3.

b. No - proceed to Step 6.


3. Check brake vacuum pump operation.

a. Ignition switch on and engine off.

b. Exhaust all vacuum by applying brake pedal five (5) times.

c. Using IDS, enter diagnostic mode:

DataLogger - ABS Module.

d. Toggle vacuum pump (VAC_PMP) active command to turn the pump on for 30 seconds.


4. Does the brake vacuum pump run?

a. Yes - proceed to Step 5.

b. No - do not continue with this article. Refer to WSM, Section 206-09, pinpoint test T.


5. Does the brake booster provide brake assist?

a. Yes - proceed to Step 6.

b. No - perform normal diagnostics. Refer to WSM, Section 206-07.



The brake booster uses the engine for its primary vacuum supply. The brake vacuum pump helps to maintain vacuum supply when the engine is under boost conditions.

6. Reprogram the ABS module to the latest calibration using IDS release 75.04 and higher. This new calibration is not included in the VCM 2011.9 DVD. Calibration files may also be obtained at the website.

7. Replace the front brake pads. Refer to WSM, Section 206-03. It is important to follow the instruction sheet included in the brake pad kit for proper pad orientation.








Parts Block

WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT : Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME

111024A 2011 F150: Perform 0.9 Hr.
Diagnosis, Reprogram The
ABS Module And Replace
The Front Brake Pads

DEALER CODING
CONDITION
BASIC PART NO. CODE
2001 42
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