hi, my 2000 f350 super duty every time I stepped on the brake pulled to the left, I thought the caliper was bad, but it turned out that when I disassembled it, no fluid came out of the hose, when I stepped on the brake nothing came out, I followed the line As far as it connects, it seems to me that it is the main ABS case and I unscrewed that line and when I stepped on the brake no liquid came out either, can someone tell me if I have to replace the complete abs or is there any way to fix it, thanks

 

Can you crack the bleeder screws on a different caliper and see if fluid comes out when braking, exactly the same as if you were bleeding the brakes, this likely wont change the diagnosis but it would be nice to know that the other brake calipers are working correctly.
Is the ABS light on or do you have any ABS codes.

Just to make sure I understand correctly you followed this calipers brake line to the ABS module, unscrewed that single brake line from the ABS module and no fluid came out of the screw hole?
Based on this it does sound like the ABS module has a solenoid hanging blocking fluid flow.
I do not but hopefully someone else will have knowledge of if you can rebuilding the module or not.

 

the other caliper works well and comes out liquid, from the line and from the module abs

 

anyway i replaced the caliper and hose

 

abs light is not on

 

Yeah this defiantly sounds like a ABS module fault to me. Check in your area how much a new one costs and decide if its worth trying to find someone who will rebuild the current one and how long it will take to rebuild.

 

I've been seeing some used ones on ebay, but if mine is already damaged, I imagine that the same thing could happen to any used one I buy, I'll see if I can find a place that is dedicated to repairing them,thanks to all the people who gave me their help