Brake Antilock Wheel Speed Sensor Problems of Ford E-250

1998 Ford econoline van 5. 4l eng. Abs brakes: while applying brakes, the brake pedal responds with forceful back pressure to prohibit brakes from operating. Operator then exerts excessive pressure to force braking, still yet vehicle brakes very sluggishly. Operator notes that when the condition occurs, if he releases then re-applies brake pedal pressure the brakes tend to grab and try to lock up. Operator has taken the van in for service, replaced the speed sensor on rear diff, problem went away for 2 days recurring there after. Shop mgr states that the problem could be a dump valve causing malfunction. Still investigating problem. Vehicle mfr has recently sent a recall notice identifying desc # 09s09, speed control system modification. Operator will be scheduling the service. More to follow on this subject. Problem has been noted and continues to this day, Dec 28 2010.

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There is a pressure switch on my master cylinder of the braking system. There is o listed recall for my pickup truck how ever after about $900. 00 and 2 different auto shops I found this switch to be the defective part and when I went to the dealer jim click of tuscon az and the parts guy gave me the part I requested I questioned the wiring harness adaptor and why the switch was not the same as I brought him. He stated well there was a lot of failures with the old design and it was a recall I stated well shouldn't the part be free no response - - the defect in the part was an air leak causing me to chase it for a year on and off constantly bleeding little air bubbles out with over a gallon of fluid. I noticed it with just the ever so slight of dirt sticking to the leak on the under side of switch which could not be seen. This leak resulted in a constantly soft pedal with a about a 1-2 second braking delay. I checked to Ford site and the only existing recall is a speed sensor. Not for this part.

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