Sensor on master cylinder
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Junior User
Joined: Sep 2003
Posts: 61
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From: South Carolina
Sensor on master cylinder
Y'all help me figure something out. Several months ago I hopped in my '96 f-250 4*4 to go pull a neighbor out of a ditch. Cranked right up, mashed brake to shift into drive, nothing happened. Shifter wouldn't budge. ABS light started flashing! Started visual trouble shooting at the master cylinder and found a burned sensor and wire harness on it. I disconnected it and continued checking things until I found a blown fuse. Replaced fuse and truck has worked fine ever since. This sensor on the master cylinder is now leaking a little bit and I want to replace it. Is it something important? Can I plug it? Will I have to bleed brake system?
Elder User
Joined: May 2003
Posts: 589
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From: Canastota
That sensor tells the ABS computer if there is enough fluid in the res. and if not, it disables the ABS. If the sensor is bad, it will have a fit and say there is not enough. To replace it, you need to drain the fluid out of the res, then gently pry it out of the master cylinder with a screw driver or something of the like. Then replace it with a new one. Yes, you need to bleed the brakes too. Well, you should, so the manual says.
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