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Old 07-18-2014, 02:50 AM
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Bad Brakes

Hi all,

Looking for some help. I own a 2006 f250SD Lariat. The last 3 years or so I have had continuous brake problems, and now I'm at my wits end. Here's what happens;

With the truck not running I can push the brake pedal to the floor it gives some resistance but I can get it there. When I start the truck the pedal will go to the floor. When I hook up my trailer trailers brakes to the brake controller and push down on the pedal, the trailer brakes will not actuate nor will the brake controller show any gain. I then actuate the brake controller manually and the trailer brakes work and gain is shown on the controller as per normal. So this tells me the controller is working properly.

When I drive the truck either with or without the trailer and press the brake pedal for braking, the brakes start to shudder so hard that I have a difficult time keeping the truck under control. To me it seems that I have a warped rotor, but the front two rotors were turned, the rear two are brand new. Then I thought I have a sticky brake, as I have had sticking brakes in the past, I have had one in the front and one in the back replaced last year.

Could this be a master cylinder or hydroboost issue at least with the trailer issue I have. Any ideas on how to troubleshoot this. I'm a competent mechanic with proper equipment to service brakes, I'm just totally stumped.

Also can someone recommend the best pads, calipers, rotors that I can install that will stop my truck.

Thanks for any help, it is much appreciated.
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Old 07-18-2014, 03:50 AM
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Quote:
Originally Posted by tritom45ca View Post
Hi all,

Looking for some help. I own a 2006 f250SD Lariat. The last 3 years or so I have had continuous brake problems, and now I'm at my wits end. Here's what happens;

With the truck not running I can push the brake pedal to the floor it gives some resistance but I can get it there. When I start the truck the pedal will go to the floor. When I hook up my trailer trailers brakes to the brake controller and push down on the pedal, the trailer brakes will not actuate nor will the brake controller show any gain. I then actuate the brake controller manually and the trailer brakes work and gain is shown on the controller as per normal. So this tells me the controller is working properly.

When I drive the truck either with or without the trailer and press the brake pedal for braking, the brakes start to shudder so hard that I have a difficult time keeping the truck under control. To me it seems that I have a warped rotor, but the front two rotors were turned, the rear two are brand new. Then I thought I have a sticky brake, as I have had sticking brakes in the past, I have had one in the front and one in the back replaced last year.

Could this be a master cylinder or hydroboost issue at least with the trailer issue I have. Any ideas on how to troubleshoot this. I'm a competent mechanic with proper equipment to service brakes, I'm just totally stumped.

Also can someone recommend the best pads, calipers, rotors that I can install that will stop my truck.

Thanks for any help, it is much appreciated.
To me this sounds like a master cylinder, hydroboost, or ABS module issue. None of what you describe could be occurring at the wheels. I would start with changing the brake fluid and bleeding the master cylinder and entire brake system. I would then flush the hydroboost system.

In terms of best pads and rotors, I've been very pleased with Powerslot Cryo Rotors paired with Hawk Super Duty pads. I recently replaced both front calipers and went with OEM.
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Old 07-18-2014, 03:38 PM
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Thanks for the insight skanj0, I was doing a little reading and saw someone talking about sticking a magnet into the power steering reservoir to see if there was any metal particles. I tried that and notice a couple of very small slivers on the magnet.

I removed the return line on the hydroboost and ran a couple of liters of fluid through while turning the wheels and pumping the brakes, no change to the condition.

With the truck shut off, I tried turning the steering wheel to see if there was excessive play. I can easily turn the wheel about 60 degrees each way. Is this excessive?

I think I need a steering box, is there a good place to get a red head steering box?
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Old 07-18-2014, 04:00 PM
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Quote:
Originally Posted by tritom45ca View Post
Thanks for the insight skanj0, I was doing a little reading and saw someone talking about sticking a magnet into the power steering reservoir to see if there was any metal particles. I tried that and notice a couple of very small slivers on the magnet.

I removed the return line on the hydroboost and ran a couple of liters of fluid through while turning the wheels and pumping the brakes, no change to the condition.

With the truck shut off, I tried turning the steering wheel to see if there was excessive play. I can easily turn the wheel about 60 degrees each way. Is this excessive?

I think I need a steering box, is there a good place to get a red head steering box?
Yes, that is excessive. I got mine direct from Redhead. Great guys. Fast core refund too. I was shocked at the amount of metal dust that came out of the box. Ironically, tomorrow I am helping my buddy put a Redhead box in his truck (06 Super a Duty). He has a lot more play in his steering box than I ever did, so I know he will be thrilled with the change.
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Old 07-24-2014, 11:49 AM
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Quote:
Originally Posted by tritom45ca View Post
Hi all,

Looking for some help. I own a 2006 f250SD Lariat. The last 3 years or so I have had continuous brake problems, and now I'm at my wits end. Here's what happens;

With the truck not running I can push the brake pedal to the floor it gives some resistance but I can get it there. When I start the truck the pedal will go to the floor. When I hook up my trailer trailers brakes to the brake controller and push down on the pedal, the trailer brakes will not actuate nor will the brake controller show any gain. I then actuate the brake controller manually and the trailer brakes work and gain is shown on the controller as per normal. So this tells me the controller is working properly.

When I drive the truck either with or without the trailer and press the brake pedal for braking, the brakes start to shudder so hard that I have a difficult time keeping the truck under control. To me it seems that I have a warped rotor, but the front two rotors were turned, the rear two are brand new. Then I thought I have a sticky brake, as I have had sticking brakes in the past, I have had one in the front and one in the back replaced last year.

Could this be a master cylinder or hydroboost issue at least with the trailer issue I have. Any ideas on how to troubleshoot this. I'm a competent mechanic with proper equipment to service brakes, I'm just totally stumped.

Also can someone recommend the best pads, calipers, rotors that I can install that will stop my truck.

Thanks for any help, it is much appreciated.
What type of friction are you using now? I always go with Motorcraft. The commercial fleets seem to have an alternate favorite out there. For severe duty it's appears to be a viable substitute. The warehouse I deal with has offered this alternative for years.
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