Automotive Brake combination valve - how to test and how they work !!! 

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TRILLGATES2K6 dats right..ayoo

Ayooo

😂😂😂

And when you slam the brakes it sounds like a skuuuuurt and a aaaaaadriannn!!!!!!!

Operation Dominica you might want to check the condition of the brake pads to see if there is any contamination from leaking brake fluid or axle grease seal that could make the brake pads more prone to sticking and locking your wheel. if that looks good, make sure self adjusters are working and adjusted properly. those are more likely to cause your problem than a malfunctioning prop valve.

thanks for watching and dont forget to subscribe

thanks for watching and commenting

Thanks for watching!

Thank u

thanks for watching

+klowny1969 why would the rear valve (metering valve?) leak brake fluid? Any insight would be extremely helpful

+X Man bad seal

+klowny1969 replace the proportioning valve or can the seal be fixed?

thanks for watching

+klowny1969 2003 gmc sonoma, ,valve very similar to the one in your video. It's leaking brake fluid out the back of the valve (metering valve?). Why would this be?

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Thanks for watching

TheRockJericho if the brake light is on then you have low pressure in either the front or back..check for leaks

klowny1969.., Will do. Thanks.

Or check that the proportioning valve is bad. If the light is stuck on even without your foot on the brake than the imbalance piston is stuck one way or the other. This keeps the light on. If you have a leak either front or back than the light should only come on when you press down on the pedal. Junk plugs up combination valves eventually.

it is possible

Did you figure out the problem on your tahoe? My 2000 Sierra 1500 Z71 has been having an issue with the front brakes sticking and getting really hot. It's never both sides at once, but it rotates from side to side. Might be the driver's side one day, then the passengers side another day. I replaced the master cylinder, both front brake lines, and it still does it. The back has disc brakes and they never stick. It almost feels like they barely get pressured because it takes more effort to stop the truck than what I think it should. To me that seems like it would cause the front to overheat by being overused. I just wanted to ask if the proportional valve helped because I've been told to change it. Thanks.

william haines thanks for watching and commenting

Vaktrus that sux

Vaktrus

hey watched this video because I'm dealing with the same/similar issue....Did you ever solve your issue? Was it the proportioning valve? What was your solution....Thanks...

+76reliant I got 2 bad master cylinders in a row! That's all it was

Did you fixed? I have same problem

you should be fine with a spring swap..thanks for watching

klowny1969 thanks for responding so quickly! That makes things a lot easier

​@klowny1969 I know this is from 6 years ago but what year corvette spring do I need to look for or link please? 🙏 tia.

lol awesome..glad i was able to help..dont forget to subscribe!

I have this exact problem with my P30 motorhome

There should be no fluid where the switch is..so u need a new combo valve..don't forget to subscribe

Have you replaced ur master? Might want to connect a pressure gauge on ur calipers and check

How do you hook a pressure gauge up, and what pressure should I be looking for? Yes, I have replaced the master, also the hoses, the rear wheel cylinders, both front calipers, and just for giggles I replaced the proportioning valve yesterday. I then reverse pressure bled with 15psi till there were no bubbles at each wheel, and still a soft peddle. I am at a loss of what to do next.

klowny1969 Yes, I've replaced everything except the steel lines. Calipers, wheel cylinders, brakes, lines, name it. Still soft brakes.

try using a pick to move the piston in the combo valve to the center

@@klowny1969 thanks ima try that and see if I can get it

no..check ur booster checkvalve ..could also be defective booster

It could be..thnx for watching

Yes it can..improper proportioning

So I should take that spring out and spray some cleaner in there?

If its as bad as u say..I would buy a new one

I don't know if it's bad, and there are no new ones for that car.

***** if your pedal is bottoming out, you have air in your brake lines. bleed the system, then rebleed again until clear. until then, try pumping the brakes in hard braking situations, and make sure to leave an extra second or two following distance to give yourself time to pump so you dont end up rear ending someone.

For what car?

Dude Im not getting any fluid to the rear brakes. Replaced master cylinder, both front brake hoses & a full front to rear brake line that I guess ruptured?

Did u ever figure this out

Can you share number please?

You can try..the master had to be matched with the calipers as well

+klowny1969 so just use the complete system to include fronts and i cant go wrong

+Mr Green there u go

+klowny1969 thanks

+Mr Green np

could be ur brake hoses collapsing

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Pop the sensor out and move the valve with a pick

lukejordan537@gmail.com this is my email, if you could give me some advice i would appreciate it.

That should not happen, unless your metering valve isn't working properly. Don't forget to subscribe 😉

consaka1 that's a way to test it while driving

I ended up on a bunch of these videos because I am trying to get some old eldorado calipers to work on the back of my van. The weight distribution is about 50/50. When the job was originally done I put a disc disc proportioning valve in for some chevy truck application. The van weighs about 8,000 fully loaded for camping. The rear brakes are pretty darn weak. Piston size is 2.5 inches. I bet the front is over 3 inches. Still love disc on the old 14 bolt. A lot lighter. The 77 eldorado calipers were the bigger ones and they had the emergency cable feature.

soft pedal? No..check ur master cylinder or for a leak..dont forget to subscribe

Im a klown stripper..so if u have some horny women in need of a good time. Im ur klown!!

Hi excuse me to disturb you, I need to held open the stem valve because I need to change all the fluid with an automatic bleeder pump, could you tell me How to hold open this valve with which kind of tool ( screw driver...)? Thank you for your answer

I am trying to bleed brakes on a 1993 sle sonoma. I have the same question,"How do I I hold the combination valve open?" Did you ever find out how to do this?

Stone BoDean why do you want to hold it open? you should be able to bleed brakes just fine. start with the wheel that has the longest distance of brake line to travel thru, usually the passenger side rear(look for the splitter in the brake line on or near the rear axle, it is usually offset on the driver side), and finish with the shortest line, which should always be on driver's side front.

Thank You

Stone BoDean thnx for watching

buzz buzzard ayoo

Combination valve..some people call it just proportioning valve..dont forget to subscribe

Why the confusion?

vanamburgben no way!!

Pay

Pay for

Gord Baker YES

Da trolls are strong tonight

@@klowny1969 sure if you enjoy sloppy seconds or perhaps 3rds more power to ya, doesn't float my boat when I in list to advance my learning from watching someone's tutorial, I personally expect better because there's far better their to chime in on. The subject matter was of great interest to me the delivery though I found redundant and unnecessarily monotonous , there's only so many hours in a day and this could have been delivered in half the time with better preparation . As for trolling an automotive tutorial, that's a first, thanks for the honor but I'll reserve that for somewhere where it matters. Nothing personal just this man's opinion! No Safe spaces here..... I believe that's why they have a 'REPLY BOX'

U should watch a recent video..and dont forget to susbscribe

@@klowny1969 I should get a lobotomy, I should travel to Mars , I should stop all wars , I should save the planet I should believe in aliens, I'll add yours to the " I Should" list. " U shoulds" is not a useful communication disposition, but I will always keep my options open and an open mind you never know you might surprise me . Your knowledge is useful and welcomed, I would only encourage you though to consider refining your delivery.

@@klowny1969 I have an appliance repair business since the early 90s and if there is one thing I'm always reminded of from clients is that I don't want commentaries or long winded explanations from them about the inconveniences they are experiencing or unrelated matters that they think I need to know to resolve their appliance issues, it's exhausting and unnecessary. It's a teachable moment though for me to encourage them to get past the minutiae and to the specifics of what their appliance is or isn't doing. I take seriously, holding myself accountable, to be a better communicator to help facilitate these social interaction with deliberateness and discipline, this is my obligation to our consumers and to myself. There's always room for improvement and and healthy criticism is often times the catalyst for those improvements I never take them personal because it's not about me and I don't make it about me......

Not anymore..check out my new videos

i totally agree