bpeterson

Hello All,

I have an '86 4Runner with a leaking LSPV - it's brake fluid coming straight out of the rubber boot, hitting the shock below is and dripping down to the ground to the tune of nearly a full can of brake fluid in 2 weeks. I can provide pics if anyone wants/needs to see. HISTORY: This is the original LSPV, truck has 190K miles, and the master cylinder was recently replaced by the previous owner (the entire brake system was bled)

Now I'm a complete newbie here and although I have a good buddy who's a 4Runner whiz, I'm trying to figure all this stuff out. The way I see it, here are my options based on lots of research (mostly on this site):

1. Remove the LSPV and replace it with a manual proportioning valve - I'm not liking this option because I don't know much about manual pv's and this is aftermarket which could be good or bad.

2. Take the LSPV apart and find the leak (could be an o-ring, etc...) and replace the offending part - I'm not liking this option because it leaves me with no backup if I screw up the LSPV in the process.

3. Get brand new LSPV and replace old with new - I can't find any new LSPV's anywhere online - does anyone have an LSPV for sale?

4. Go to local salvage yard, pull LSPV and replace - not sure what the repercussions of this decision would be...

5. Call mechanic and have him do it all - no fun and more expensive so this is a last resort


Somebody shoot me down for stupid options above, clarify any mistakes I'm making, add additional options if I'm missing anything, and point me in the right direction if you can.



Thanks,

Ben

flatland4runner

try bleeding the system yourself I had a similar problem and that took care of it. Also, there should be a kit where you can just replace O-rings yourself, personally I wouldn't touch the aftermarket crap for something like this. But it also means monitoring where exactly the leak is coming from and troubleshooting from there.

dirtoyboy

I have good dry used valves......I think they are like 25 or 30 bucks SHIPPED...

if you are looking

mr_schuster

Personal opinion.

New or used anyone can install it, but I doubt most shops (excluding the dealerships) will have an LSPV guage set which is needed to properly set up the LSPV. If its not properly dialed in you can end up with braking problems. If it's solely off-road maybe it won't matter so much, but if your on the highway and need to get on the brakes??? Thats my $.02

bpeterson

Mr Schuster - thanks for posting your opinion, I can use all the opinions I can get on this matter - like I said, I'm new at this and am getting a lot of advice. Based on reading the FSM section on LSPV and that advice, I think I'm going to move forward with installing and configuring the LSPV on my own (with friends looking over my shoulder, of course). If all else fails I can ante up and have a shop or dealership connect a brake pressure gauge and properly calibrate once the part is installed. Dirtoyboy, I PM'ed you for the part.

4Crawler

iTrader: (3)

The FSM makes it appear to be a daunting task to set up the LSPV. It is actually very simple, just make sure the sensing rod is at the same angle as before and that is that. If you have a lift, make sure to install a bracket to raise the sensing rod an amount equal to the lift:

http://www.4crawler.com/4x4/ForSale/...l#LSPV_Bracket

Or you can buy a ready to go manual PV kit here:
- http://frontrangeoffroadfab.com/nfos...aed357b82fc6b3