Crappy Acceleration - yes I searched - Toyota Nation Forum : Toyota Car and Truck Forums

RedPhoenix · 03-26-2005, 10:01 PM

Recently, or maybe its always been like this, my accelration is getting worse and worse. Only thing I have is a ram air intake. Now I searched came up with only one thing that I can see, its my throttle body, might be dirty. I plan on looking at it this weekend, but other than what could it be?

fredk · 03-27-2005, 10:06 AM

check the air hose inbetween the throttle body and mass air for cracks

RedPhoenix · 03-27-2005, 11:00 AM

That hose looks okay, looks worn but still intact. Ill replace it with some hose I have left over from my intake.

I found this, no idea what it is but its broken.

sanengo · 03-27-2005, 11:28 AM

I'm not too familiar with 4 cylinder engine, but I think that is your BVSV. Definitely get that fixed. It is connected to the intake and probably allowing access air into your TB. Typically it's used to control emissions.

RedPhoenix · 03-27-2005, 03:55 PM

will do... anything else?

starfuryz · 03-27-2005, 04:03 PM

Its a bimetal somethign or other. Parts stores will have it listed as something else, just have them keep brining parts out. Mine was broken as well, will set u back about 60 bucks. It goes from either the tb or egr to the charcoal canister. It will help your acceleration, it did mine. Mine was broken, and the car was slow as a special olympics chess tournament.

But yea, definatly fix that.

fredk · 03-27-2005, 04:12 PM

its a vacuum control valve, depending on the way its set up, it eather opens cold or hot, where do the hoses go?

Gen3cruiser · 03-27-2005, 04:36 PM

It is the bimetal valve, a toyota only part, and pricey. Retails for $70+, but you should be able to haggle it doen to $50.

RedPhoenix · 03-27-2005, 04:41 PM

and the bimental valve will mess up my accelration, correct? Car works fine without it, just dont need to lay down some cash for my original problem and not have it work, ya know?

Gen3cruiser · 03-27-2005, 04:48 PM

No, bimetal valve is a temperature controlled valve to help control idle, it acts as a bypass when engine is cold, and closes as the engine warms.

All this will do is make you car run fast idle or ruff idle depending on temperature, but I would still replace it.

A junk yard should be able to hook you up if you don't want to spend big bucks at toyota.

ArmyofOne · 03-27-2005, 06:59 PM

mine is gone on my gen II v6, and i noticed no difference in performance. i have 6 hoses that are supposed to be connected to mine, and i havent got a single one connected.

its a Vacuum Switching Valve.

RedPhoenix · 03-27-2005, 07:22 PM

alright. ill junkyard it when I go for my new trunk latch.

So any ideas why my acceleration is lacking? I used to feel the car pull me, now all I here is the intake (loud...) but no power to show, might be all phycological, but I dont know.