Hey guys this message board this site has been a lot help lately. My car runs great now but doesnt drive great. Whenever i brake car pulls to left. I took for wheel alignment they said its brake related, I replaced front brake pads,calipers,rotors, and replaced passenger side brake line and took shop had bled. I'm thinking this has to do with what problem is.. I ran brake line from passenger tire to proportion valve the line coming out the side closest to firewall passenger side I left old brake line in place was pain to get out so i just snapped other end off valve and ran straight to tire. Am i missing something?? Please help runs great just cant drive it safely. I really dont want waste another sat day at pep boys as they really pain in *** deal with.

 

By brake line, are you referring to the metal line that goes from the proportioning valve over to the wheels and connects to a rubber flex hose. Did you replace the flex hose also by any chance? If not, that is probably the dirty rotten culprit since they have a nasty habit of collapsing internally and not allowing a good flow of fluid to the brake.

 

maybe the prop valve isnt proportioning right. sending too much fluid to one side?

 

not likely!

 

pt 2

 

I can think of a few WAAY out there ideas, so dont laugh, I have actually seen these problems.

1. Passenger wheel bearing too loose, but I highly doubt thats your problem.

2. Do your brakes on both sides work? Jack up the front, spin the tires, and have someone hit the brakes. If you replaced the rubber line, then you might have a block in the metal line, after it breaks into a Y.

3. Control arm bushings on driver side. See if the wheel assembly moves forward and backwards.

4. Rotate tires left and right on the front and see if your car pulls to the other direction. I would try this first or second, after testing the brakes in #2.

 

Thanks im going try replacing flex hose in morning hose that connects to caliper/metsl brake line was thinking maybe that couldnt hurt to replace but looked like was in good shape ill replace in morning. As far as rotating tires they both brand new installed in past month half. Wheel bearings i tried method in manual says pull wheel back and pull forward snd check for oises etc no probs there.. Thanks for imput if its not flex hose going take it somewhere Monday. Don't want replace valve or master cyl for hell of it.

 

I HIGHLY DOUBT its either your Master Cylinder or Prop Valve. I am not 100% on this, but I am fairly sure that the fronts are a single line that splits after the prop valve, and the rears are a single that splits after.

If its pulling and you think its because the tire on one side is losing pressure, wouldn't both sides in the front be weak since they are on the same fluid circuit?

Get the car back together with the new line, and do the test #2 and report back here. If they both stop, test drive and see. If one doesnt...well, your in deep **** and you would probably need to replace the metal line from the prop valve where it splits, to the flex line.

Hope that helps.

 

Two more things.

I meant shake it physically forwards and backwards...HARD. Its not supposed to move at all.

Also, the line can look fine on the outside, but if its rubber, the internal material of it can swell up and start to close off the line, giving the area for the fluid to travel through a much smaller area.

Thats why I run braided lines in my car.

 

My car did the exact same thing,replaced calipers,rotors,pads and it still did it.Replacing the flex hoses fixed it.Another couple things i checked were the bearings and tire pressures,but i bet your problem is in the flex hoses.I always change both sides when replacing brake parts,otherwise the new part/old part combo can make for uneven braking.

 

My car did the exact same thing,replaced calipers,rotors,pads and it still did it.Replacing the flex hoses fixed it.Another couple things i checked were the bearings and tire pressures,but i bet your problem is in the flex hoses.I always change both sides when replacing brake parts,otherwise the new part/old part combo can make for uneven braking.

 

Thanks, should have replaced flex hoses when replaced brake line. Damn those lil things are $20 each but fixed prob just need take it get brakes bleeded again thanks for the help.