LS1FC

iTrader: (4)

I have a 90 turbo II and I was wondering what the repercussions would be of removing this valve? It bolts on to the UIM facing the firewall. What exactly does it do? BTW - I have removed all my emissions and have done the TB mod.

adamlewis

It bumps up the idle when a load is put on the engine...Like your PS for example.

NZConvertible

If you have power steering, leave it alone.

adamlewis

Does AC not effect it?


I knew PS did, but was never sure about AC...

LS1FC

iTrader: (4)

Thanks for the responses. BTW - I dont have PS or AC.

Kim

Then go ahead and remove and while your at it, do the TBmod and bypass the coolanthose

NZConvertible

Nope, that's the BAC valve's job. The ASV is for power steering and hot-start assist.

adamlewis

I see

SureShot

I kept mine, modified it with a 1/16" orifice plug and rigged it to open with the electric radiator fan.

rxse7en

Does the ASV get it's air from the IC or does it dump it into the IC at load? The reason I ask, is that I'll be going front mount very soon and would like to keep the ASV and need to know where I should plumb it in.

Thanks all.

See you Saturday Bill.

B

NZConvertible

Air is drawn from the intercooler into the plenum chamber, bypassing the throttle.

rxse7en

Jason--Do you suggest I have a nipple worked into the IC piping for this?

Thanks,
B

NZConvertible

In theory you should, but considering how little air is drawn in, you could try just putting a little breather filter on its inlet instead. This air won't be metered so the engine will run very slightly leaner than normal when the valve's open, but I doubt this will be a problem