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**jocko** · 05-20-2012, 02:53 PM

sounds like you've covered all the obvious things, and then some. The ONLY thing that i could guess is a bad booster? (hard pedal). Sometimes when many things are replaced at once, there is a possibility that you get a bad new part. Could possibly be the check valve? As for the light coming on, that's an additional clue, but seems the only thing I can think of is under a hard stop the wire is shorting somewhere?? Or the new pressure diff sensor you installed is bad. Stinks when brand new, but could be the case.

Btw, there have been many posts about this crazy pressure diff pressure switch on these trucks - I'd love to see a pic side by side of one that is popped and one that is not.

05-20-2012, 02:53 PM	#2
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,994	*Re: sigh* Brake help...** sounds like you've covered all the obvious things, and then some. The ONLY thing that i could guess is a bad booster? (hard pedal). Sometimes when many things are replaced at once, there is a possibility that you get a bad new part. Could possibly be the check valve? As for the light coming on, that's an additional clue, but seems the only thing I can think of is under a hard stop the wire is shorting somewhere?? Or the new pressure diff sensor you installed is bad. Stinks when brand new, but could be the case. Btw, there have been many posts about this crazy pressure diff pressure switch on these trucks - I'd love to see a pic side by side of one that is popped and one that is not.