Hey guys, today I finished installing my OME 883/890 lift and shocks.

Well, in all honesty, I was thoroughly disappointed in the still resulting brake dive, even with firm springs and Bilstein 5100 shocks up front. It is better than before, but still nosedives pretty bad. My occupants always think I'm slamming the brakes, but I am really just slowing normally. At stoplights, I can make the car rock back and forth while just pulsating the brake lightly, and the whole thing moves like hell.

So I thought to inspect my LSPV for possible fault. The drums I have (while I admit, aren't in the best condition) work fine, they're newly adjusted and the E-Brake is very firm.

My LSPV is very confusing. I have heard that when the vehicle is loaded, it causes the LSPV rod to move up, which sounds correct. Mine is already in the "up" position. It can't go any higher. I even took a ziptie to pull it all the way down and try a quick drive, and nothing was different. What can I even do? I took the spring off to see if it would change anything, the LSPV defaults to "up" and is very easily flopped around before returning to "up."

Meanwhile, all the way up, or all the way down, I sense no difference in hard braking or city driving.

I thought that maybe the extra braking power of the Tundra 231's I've got up front may be to blame, but I figured it must be something else when I can't find the LSPV to do anything.

So far, all I've found is that ABS 3rd gen 4Runners do not have these valves. I've got little audience to work with so I thought I'd ask here, which has a larger audience of 4 cylinder owners who may not have ABS.

I just did new Toyota shoes in the back and I have warped Centric brand brake drums. I figure I should replace them too, when I have money. If that's the problem, then sorry for wasting your time, I'm just going nuts here!

 

here is something i found that explains how the LSPV works.

go down to page 98

http://www.autoshop101.com/forms/brake08.pdf

 

After that read, I am fairly certain something is wrong with mine, then.

It clearly shows the LSPV rod at a lower position when unloaded, and all the way up during a loaded position.

Since mine is ALWAYS at the upper position, is it safe to assume mine is busted? It seems like the only explanation I can come up with.