Brake Pump runs all the time Reply #15 – August 22, 2010, 11:20:15 AM Oh ya i also tried a different accumulator just to see if the accumulator was bad and both do the same thing. Quote Selected
Brake Pump runs all the time Reply #16 – August 22, 2010, 01:00:56 PM Fluid flow from the pump will normally be low volume, it doesn't gush out, but it can develop very high press when pumping against resistance. It stores this energy in the accumulator. If you have clean, clear fluid coming out of the accumulator hole, you're really at the point that a pressure gauge needs to be screwed into the accumulator hole, or the pump output, to check pump output pressure. The issues here are that the thread size and pressure dictate a specific gauge. You need one capable of measuring 2000 psi. You might be able to rent one from a local parts house, like O'Reilly or Autozone etc. Ideally also you need to "purge" or cycle the solenoid assembly while the pump runs to clear it, but try bleeding it and if there is brakes enough to drive it safely, do some hard brake stops in the dirt. I believe some aftermarket scanners can perform this function too so check with your tool rental shop to see if they have something that can help you with this. (I fortunately had the luxury of the factory tools so I'm not able to direct you which scanners to look for but I would try to get hands on OTC, MPSI, or Snap-on if you can.)You are either now still fighting the solenoids or the pump went Kaput.FYI, when an accumulator goes bad, it causes the pump to shut off within a couple seconds with no assist reserve. Normally the pump should run 30 second to a minute after pumping the pedal 4 or 5 times.Loaded87IROC- your description sounds like your volume output is a little lower than I'd expect. I forgot to look for my TEVES info last night. I'll try to look tonight. Quote Selected
Brake Pump runs all the time Reply #17 – August 22, 2010, 01:09:23 PM One more side note; make sure you don't use DOT 5 brake fluid. It's silicone based and it actually is compressible and will give you all kinds of fits with mushy pedal, pressures etc. Quote Selected
Brake Pump runs all the time Reply #18 – August 22, 2010, 01:15:46 PM Ebay currently has a Breakout box listed at about $30 including shipping. Might be what you need! Search "Teves J-38716". Are we allowed to post an actual link on here? Quote Selected
Brake Pump runs all the time Reply #19 – August 22, 2010, 01:41:14 PM Now I'm hogging the thread, sorry!Someone elsewhere suggested that a completely ruptured bladder in an accumulator might allow it to fill with air causing a pump run-on. I have never seen this happen in the field myself, but theoretically it would make sense. You could invert it and fill it with brake fluid prior to reinstalling to check for this. l would probably take a half pint of fluid in this case. I assume your replacement was used? By the way, what was your original symptom that caused you to replace the pressure switch? Quote Selected
Brake Pump runs all the time Reply #20 – August 22, 2010, 03:49:11 PM Quote from: oljeeptek;332988Ebay currently has a Breakout box listed at about $30 including shipping. Might be what you need! Search "Teves J-38716". Are we allowed to post an actual link on here?links are OK , and welcome Quote Selected
Brake Pump runs all the time Reply #21 – August 22, 2010, 07:49:09 PM My original symptoms were the pump would not run at all unless I jumpered out the switch or jumpered the relay. After replacing the switch the pump now runs as described I do think that if bleeding the brakes doesnt solve my problems I will be going to a conventional setup with vac assist instead of the Teves Quote Selected
Brake Pump runs all the time Reply #22 – August 23, 2010, 02:57:26 PM I stumbled across this link , check it outhttp://www.thelincolnmarkviiclub.org/phpBB3/viewtopic.php?f=12&t=3591 Quote Selected
Brake Pump runs all the time Reply #23 – August 27, 2010, 02:20:24 PM Sorry, I've been swamped here. It looks like you made the correct initial diagnosis with the switch.Let us know how it works out. Teves is a very simple system actually, but the parts are $$$ and it's tough to work without the guage and a valve actuator. (It was also used by GM for it's Hydroboost system and I've been thinking of adapting one to my 69 Bronco but that's a whole 'nother can o worms.) Good luck anyways!Hypostang that is a good link with a lot of great info. Quote Selected
Brake Pump runs all the time Reply #24 – August 27, 2010, 11:01:49 PM Thanks for all of your help but after bleeding the brakes ALOT the wife thinks her right leg is bigger than the other now I will be picking up my SVO M/C in the morning. Quote Selected
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