I replaced the two front calipers,than i bleed the brakes the old fashion way but the brake pedal goes right to the floor,no more pressure in the system.This truck is an 07 with ABS for the rear brakes only.So what is going on!!!!!!!!!

 

You got air in it somewhere. Keep bleeding it. I assume the brake fluid reservoir is full?

 

so far i whent trough 1.5 litre of brake fluid

 

Did mine the old fashioned way last time, no probs. Guess it is possible that your master cyl could have failed. Have heard of it happening before during a brake bleeding.

 

Try bleeding the front. I suspect you may have induced air during your previous bleeding process.

 

I have the same issue with my 01 ram 1500. I've been told its the master cylinder. But I just dumped 350 in breaks, rooters, and calipers. I'd hate to dump another hundred in it.

 

If you do replace the master cylinder, I'd look hard at doing a vacuum bleed on it.

I use this kit from Harbor Freight, and it works a champ for me. It's a cheap HF version of the high end My-T-Mite type units professional shops use (as in, in a day you could kill it using it in a shop, but for home usage it's great.)

RwP

 

Try bleeding the entire system, including the rear. there is the possibility that air was induced into the rear ones.

I had one of calipers come apart (piston pushed out) when i did my hub, I only had to re-bleed the 2 front and it came back to normal. It was a PITA to get the piston back in.

I had a minor leak in my rear brake line not long ago (Parking break cable wore into it) and I would loose pressure alot, and it wasnt a big leak, didnt leak when parked.