I just finished my TPI conversion. There are 2 ports on the passenger side of the throttle body and I'm not sure what they are both for. I assume 1 of them is for the PCV.

Does anyone know where the upper and lower ports go to? I've tried both AllData and Mitchells for a diagram but they're all terrible...

 

The large upper one goes to the vent hose on the passenger side valve cover. The one right below it goes to some part of the charcoal canister system (the largest hose on the canister I believe).

 

the top one goes into the charchol canister and the bottom one goes into the pass. side valve cover

EDIT:
turns out mine were on reversed

 

Not in either of my cars. I'm not saying I'm right, its just an observation.

 

The top one is not a vacume port. It was mentioned above it goes to a vent hole on the passenger side valve cover. Or you could leave it open and just put a breather on the cover. There is no vacume with the upper hole. Bottom hose goes to a charcoal canister which sucks in fumes from the gas tank. Vac port under the throttle body gets connected to the EGR Silonoid. (sp)

 

Accually the hose from the bottom part of the TB gets an adapter to accept 5/16in vac hose which goes to the SMALLEST port on the canister.


Largest port on the canister get a hose lead out into the fender and the middle sized port gets the hose from the Fuel vent steel line on the frame rail.

 

Thanks. I'm not using CCP so I guess I'll only use the top port for the PCV.

The vac port for the EGR solenoid is capped as well.

 

Bottom port you mean. The top port is NOT a vacume port. Start the car and you will find no suction lol

 

There are a couple of ways I've seen the routings.
One way is this is a "closed PVC" system that has one port from the throttle body directly behind the air filter but in front of the throttle blades. This hose would bring fresh air (filtered) into the cranckcase through one of the valve covers.
The other port on the throttle body is behind the throttle blades and has constant vacuum from the engine. That one "usually" is connected to the PCV valve on the opposite valve cover to pull the air out of the crankcase.
Keeps a nice clean circulation of air.

The way mine was previously is the canister purge was connected to the port behind the throttle blades to always pull purge air into the motor when it was opened and the fresh air (filtered port) line went to a valve cover.
The opposite valve cover had the PCV valve and routed directly into the base manifold for full vacuum.
Either way seems ok, You'll probably use the first setup I mentioned.