Question about 1984 Nissan Stanza

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How do i stop a leak from the brake proportion valve on my 84 nissan stanza?

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Replace the part that is leaking,only solution...

Posted on Apr 28, 2010


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What does the proportioning valve do?

Assuming you're talking about the brake system...
The proportioning valve is on the rear brakes only when the vehicle has rear Drum Brakes.
What it does is limits the brake line pressure to the rear brakes during normal stopping. This way the rear brakes don't lock up and cause the vehicle to fish tail or spin.
When you press the brakes harder than normal, the proportioning valve opens more to allow more line pressure so you're able to stop faster.

I’m happy to help further over the phone at

Jul 10, 2014 | 1983 Jeep CJ7

1 Answer

1991 Nissan Pintara U12 brakes don't work

check it actually has vacum at booster,if it has check seals installed behind master cyl and ahead of brake pedal.
if above checks out and theres no hissing when you step on pedal someone screwed up booster rebuild

Oct 31, 2017 | 1991 Nissan Stanza

1 Answer

1992 Nissan stanza broke down

I think you screwed something up with the transmission when you shifted into park while moving.I would get a transmission guy to look at the problem.I'm sorry but that's all i can say.

Dec 18, 2013 | 1985 Nissan Stanza

1 Answer

Why does my brake light indicator stay lit on my 1992 nissan stanza when parking brake is not engaged?

  • The majority of the time this is also an indicator that your brake fluid is below a safe level. Adding some brake fluid to the master cylinder and pumping the brakes a few times should remedy this.
  • If this does not remedy this then you have a leak in the brake system somewhere or your master cylinder could be malfunctioning. Make sure the lid on the master cylinder is on tight and sealed well too.
  • The master cylinder is where you fill the brake fluid. Do not over fill it.
Regards, tony

May 22, 2011 | 1992 Nissan Stanza

1 Answer

84 Nissan 720 rear brake lock-up

Was the proportion valve and mater cylinder replaced? The problem most likely is a bad proportion valve it doesn't allow the fluid to return to the master and therefore stays in the system and locks-up the brakes.

Dec 10, 2008 | 1984 Nissan Pickup

1 Answer

My 1992 Nissan Stanza has transmission leak.

The stop leak treatment may help the seals to seal better but I would get the car to a good transmission shop since it has that many miles on it. The fluid probably needs flushed out and changed by this time.

Nov 20, 2008 | 1992 Nissan Stanza

1 Answer

1991 nissan stanza brakes

Your master cylinder rear seal is most likely shot. Check to see where the fluid is actually leaking from. If it is coming from the rear of the master cylinder, flush against the brake booster, replace the master cylinder.

Sep 05, 2008 | 1990 Nissan Stanza

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