The mechanic here was baffled. At the time he was involved the phenomena was so rare he could not road test to experience it. No, the pedal does not sink if steady pressure is applied. I thought maybe the actuator might be different than the master because of the solenoids and chambers. More strangely it only happens as I am almost stopped and then the pedal will just release and travel maybe an inch or inch and a half. It does not bottom. Then it may not happen through the next three or four stops.
It seems to happen when I hit a certain speed like 8 mph (just a guess) If I brake to slow while at traveling speed no problem. Your bulging line idea is interesting but I think that would happen every time and at all speeds. The fluid level does not change so I am not leaking from a pin hole or wheel cylinder. A guy on this sight back a month or so is the one who mentioned the actuator and even sent a link to a part picture for an on line parts store. The part is over $300 with obviously no returns. I was looking for service manual guidance because I read somewhere the ABS has to be sequence bled with a special tool and so that seems to force me to a dealer. My mechanic will replace the part if I buy it but won't purchase it because of the iffiness of success. We didn't try to get a code read because no lights come on to indicate any problem with the ABS. You think there might be a code fault for an intermittent hydraulic anomaly?
If a dealer gets this truck we both know I ain't getting out alive particularly when anything they tell me I would have to trust since I have no clear idea what to reject.
Also, the part the other online troubleshooter was not recognizable to me so I thought a year specific repair manual guide would give me a clear diagram to compare to my as built truck. It has been 5 degrees outside here for a while and I am old so I haven't stuck my head under the hood for a while. I didn't want to order that part until I am certain it is a match.
Lots of words and no additional information.
That part only shows up on the parts store he recommended so I am assuming if Advance and NAPA don't even list it all arrows point to the Blue Oval. ****! Those dudes get their pound. I'll feel abused for a month after until I manage to forget it which at my age requires less and less time.
If you're out of ideas I'll understand. You won't be the first.
Friday, February 11th, 2011 AT 11:17 PM