'06 Dodge Caravan (6 cly small engine) loss of breaks - peddle all the way to the floor

'06 Dodge Caravan (6 cyl small engine ~ 100K) loss of breaks - peddle all the way to the floor. Pumping did no good.
One time occurrence, no idea of the cause unable to duplicate no matter what
we try.
My DIL (van full of grand kids) had this happen one time. Since she is a careful diver no harm came of the incident except that I'm now driving the van until we find the cause and fix the problem
I can't find any information on or off line on what may be the proximate cause much less what to do so that it does not happen again.
Any ideas suggestions recommendations would be greatly appreciated.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

There have been reports of a steering stop problem that allows the caliper to be pushed back if the steering is turned to full lock in one direction. This will cause the caliper piston to be fully depressed and could require quite a few full pedal strokes to take up the clearance and provide a firm pedal (and braking power) Might be worth trying cranking in full lock both ways, then checking pedal travel.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

Thanks ever so much. I doubt this is the proximate cause as the van was traveling in a straight line at the time of failure.
On the chance that it could be related we're going to give it a good hard test.
I'll post the result in the event the information if of any help to others.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I put my money on master cyclinder. if any caliper pistons or wheel cyclind ers goes bad, you will see wetness on brake system. if the master cyclinder goes bad, it will not apply pressure. as you keep pumping, the seals in th e master cclinder expand alittle bit or move alittle bit to seal the system . More importantly, since the leak is internal, you will not lose fluid.
I had a similar experience on my hydtrolic clutch on ford escort. please se arch for "spongy clutch at ford escort". My clutch once a while goes all th e way but if you pump a couple of times, it works. It happened once a week before i changed master clutch cyclinder.
On Monday, October 8, 2012 6:36:54 PM UTC-5, NotMe wrote:
- peddle all >>the way to the floor. Pumping did no good. >> >>One time occ urrence, no idea of the cause unable to duplicate no matter >>what >>we try . >> >>My DIL (van full of grand kids) had this happen one time. Since she is a >>careful diver no harm came of the incident except that I'm now drivi ng the >>van until we find the cause and fix the problem >> >>I can't find any information on or off line on what may be the proximate >>cause much le ss what to do so that it does not happen again. >> >>Any ideas suggestions recommendations would be greatly appreciated. >> >> >> >> > There have been reports of a steering stop problem that allows the > caliper to be pushed back if the steering is turned to full lock in > one direction. This will c ause the caliper piston to be fully > depressed and could require quite a f ew full pedal strokes to take up > the clearance and provide a firm pedal ( and braking power) Might be > worth trying cranking in full lock both ways, then checking pedal > travel. Thanks ever so much. I doubt this is the pro ximate cause as the van was traveling in a straight line at the time of fai lure. On the chance that it could be related we're going to give it a good hard test. I'll post the result in the event the information if of any help to others.
I put my mone on
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Had it happen to me on a '97 Caravan. I was sitting stopped at a RR crossing when the pedal started sinking slowly to the floor. After many slow pumps, it came back up to normal and got me to a repair shop. Replaced the master cylinder and all was fine from then after.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.