yet again i never cease to break ****...lol...anyway...this runs off my intercooler...im wondering if its not the BOV but then again i have no clue...anyway..its to an 87 tII

 

hrm.....maybe it's the air bypass valve that bolts to the UIM....

 

its for p/s. it bumps up the idle. so if your getting rid of your ps then get rid of that.

 

nah i want my power steering...what gets me is why would they have something like that runnin off the intercooler?

 

I thought that's what the BAC is for...

 

bump

 

No, you're thinking of the ASV on the back of the UIM. The valve pictured is for the AWS (3000rpm start).

Chuck it away, cap the connections.

 

so theres no real need in the aws...i thought it helped during cold weather or osmething like that.

 

On a series four car that is the Air Bypass Solenoid valve. It is used for 17 seconds on a cold startup in conjunction with the BAC to give you an approx 3000 idle for those 17 seconds.

It's only used for those seventeen seconds and or during subsequent starts if the water temp is b/t approx 55 to 90 degrees F (I forget the exact numbers, see the FSM). That water temp on a series four is sensed by a water thermo switch on the bottom left of the radiator.

It's an emission control device to warm up the pre cat in a hurry to get it working right away. But when you go to the emissions checking station, it won't come into play because, heck, you drove the car to the station and the water is warm/hot already.

Yeah, if broken, remove it from the car and plug the intercooler with a hose and plug in the hose end. Be sure to also plug the outlet line of the air bypass solenoid that leads to the nipple just aft of the BAC.

This is the long winded answer to complement the straight and to the point answers above, that told you remove it and cap off the lines.