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Old 07-04-2020, 10:10 AM   #1
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Brakes

My father inlaw has freedom express brings it home and says the brakes are very jagged and the truck says its not hooked up.
I jacked it up put my sons truck on it spin the wheel and it will brake but only after the wheel spins several times then it releases. I pulled the break away and they grab and hold.
Anyone had issues like this before
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Old 07-04-2020, 10:42 AM   #2
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Any information about the truck? type of controller? yada yada yada.
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Old 07-04-2020, 04:27 PM   #3
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Any information about the truck? type of controller? yada yada yada.


The ford has the factory in dash controller and so does the gmc i tried.
I am going to check power and ground going the brakes tomorrow
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Old 07-04-2020, 04:31 PM   #4
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Any braking effort when you use the manual squeeze tabs?
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Old 07-04-2020, 05:21 PM   #5
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It has been awhile but I had a similar issue with my 2005 f350 with the built in brake controller.

It kept saying there is an issue with the brakes. I checked everything regarding the truck and found no issues.
Took trailer to repair shop and their tester said nothing wrong with the brakes.
The solution:
1 found that the controller works based on the VSS (vehicle speed sensor) and the controller would not apply brakes at low speeds < 5 mph.

2. Found that the brake cable (electric) was not the same length to the brakes on the trailer. Extra cable was coiled up on the frame.
We made the cables same length. After that never had an issue with the controller saying the trailer was disconnected or no braking.

Also found that in a parking lot the brakes would not apply on the trailer but if you hit the brakes out on the street the brakes would apply based on speed.
I took the trailer down a quiet street at 55 mph and buried the brake on the truck. ABS on truck actuated and the trailer came to a smooth stop. No tire slide at all.

That's the whole story
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Old 07-04-2020, 05:42 PM   #6
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You do know these brakes will only work if the trailer is moving ? The magnets push up the cranks that push the shoes out , must be underway .
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Old 07-04-2020, 05:51 PM   #7
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The brakes sound like they are working properly since they work with the breakaway switch. I would measure the voltage at the trailer when you operate the manul lever on your brake controller to see what you get.
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Old 07-05-2020, 12:51 PM   #8
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The brakes sound like they are working properly since they work with the breakaway switch. I would measure the voltage at the trailer when you operate the manul lever on your brake controller to see what you get.


Just put a good batter on the trailer axles up spun the hell out of the wheels touched the battery and all wheels stopped.

Went to the truck i have 13 volts on max gain when the controller is activated
But when stepping on the brakes 2 volts is all i can get.
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Old 07-05-2020, 01:00 PM   #9
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Just put a good batter on the trailer axles up spun the hell out of the wheels touched the battery and all wheels stopped.

Went to the truck i have 13 volts on max gain when the controller is activated
But when stepping on the brakes 2 volts is all i can get.
If it’s an inertia based proportional braking system, stepping on the brakes probably would not apply much voltage. The controller would need to see activity on it’s inertia sensor to apply more voltage when the brake pedal is pressed. In other words, it needs to feel that you are slowing the truck down, and the voltage would increase depending on the deceleration rate.
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Old 07-05-2020, 08:11 PM   #10
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If itís an inertia based proportional braking system, stepping on the brakes probably would not apply much voltage. The controller would need to see activity on itís inertia sensor to apply more voltage when the brake pedal is pressed. In other words, it needs to feel that you are slowing the truck down, and the voltage would increase depending on the deceleration rate.


Im going to hook it up tomorrow and take it for a drive. I canít take his word for it
Must see for myself lol
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Old 07-05-2020, 08:12 PM   #11
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Im going to hook it up tomorrow and take it for a drive. I canít take his word for it
Must see for myself lol


Thanks for all the info and help people
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