What does the charcoal cannister do that hooks up to the TB? What would happen if its not hooked up? Would it throw a code? The reason im asking is i want to put a different TB on but it doesnt have a hook up for the charcoal canister.


Modified by HT Chaplin at 1:24 PM 9/23/2004

 

This is where the fumes from the gas in your gas tank go. From there it is either recirculated into the intake manifold (to be used in the combustion chamber) or it is expelled into the atmosphere.

I don't suggest you mess around with it. Otherwise you may have excess pressure in your gas tank.

Can anyone else explain what else it does in detail?

 

It should never allow fuel vapors to escape to the atomsphere - its job is to trap them and allow them to be pulled into the intake to be burned.

Basically there is a valve which opens the canister to the atomsphere but at the same time another valve is opened leading from the canister into the manifold. Using manifold vaccum, it pulls the vapors from the canister (through the vent that was previously opened).

Will you throw a code? Well, OBD2 is pretty finicky when it comes to emmisions, so even if you left everything electrically hooked up to satisfy that requirement of the ECU, when it tries to run a test or 'use' the EVAP system and it doesn't see an expected result from some other sensor, then it may complain.

OBD1 - even more leniant in the emmisions department so you maybe able to get away with it in that case.

 

Well its a OBD0 CRX and the charcoal cannister hooks up to the TB. I wonder if I can make a plug on my air intake? Or should i just plug it?