Alternatively, if you have an extra one you'd be willing to sell, let me know. It seems like mine is broken but I'm still doing a bit of troubleshooting and cleaning.

The Bosch one I've been linked before is a bit expensive and I'm wondering if there are other options (https://www.ebay.com/p/77022997)

Maybe this??

Not sure if they are still available but worth looking into.

A better Auxilary Air Regulator - Fuel Injection - The Classic ...

Edited February 24, 20205 yr by rcb280z

Thanks for finding that, I'll look into it. I guess my search-fu isn't as good as I thought it was. 

There is a used Datsun one for sale on eBay, unknown condition for $45 shipped.

https://www.ebay.com/itm/1975-Datsun-280Z-IDLE-AIR-CONTROLLER-AUXILIARY-REGULATOR-may-fit-other-years/133279669808?hash=item1f08165e30:g:aJYAAOSwe-td~W3Q

I have a couple of those I won't be using as well, I am sticking to carbs.. I have not tested them. 

 

I probably have one laying around , I’ll look 

Edited February 25, 20205 yr by madkaw

Would definitely appreciate you guys looking for those extra regulators @madkaw and @Terrapin Z, as long as you think they'd work. If you can't find them, I might just go with the one on ebay Terrapin listed.

 

I tried the freezer test and it didn't open the valve anymore than it already was so it's looking like a broken part. 

9 minutes ago, iflanzy said:

Would definitely appreciate you guys looking for those extra regulators @madkaw and @Terrapin Z, as long as you think they'd work. If you can't find them, I might just go with the one on ebay Terrapin listed.

 

I tried the freezer test and it didn't open the valve anymore than it already was so it's looking like a broken part. 

Did you see my post?

2 hours ago, Terrapin Z said:

I have a couple of those I won't be using as well, I am sticking to carbs.. I have not tested them.

Pic's added : 1 Bosch, and two Japanese with different numbers on them. They are all about half way open. I really never looked into how to test them. I am not sure what the difference would be in the different models. What was your statement reference about it being broken? The FSM shows the test is with power not just temp. did you try this test? Looks like powered heat closes it, and ambient temp opens it but it does not say how much. 

56 minutes ago, iflanzy said:

I tried the freezer test and it didn't open the valve anymore than it already was

It doesn't need to open much to function properly. Only needed for cold start op's.

I would be more concerned if it wasn't closing all the way after the car is up to operating temps. If it doesn't close it will increases idle

Edited February 25, 20205 yr by rcb280z

rcb is right, it just needs to close when warm.  It has a heater inside it.  If it's open at room temperature that's good.  Apply 12 volts to the terminals and it should close in a few minutes.

But it's not a vacuum leak if it doesn't close, it's a throttle blade bypass.  Like opening up your idle speed screw.

8 minutes ago, Zed Head said:

But it's not a vacuum leak if it doesn't close, it's a throttle blade bypass

That is correct. I have since corrected my post. Thanks Zed Head, had to think about that one for a minute. Still struggling with memory these days.

Edited February 25, 20205 yr by rcb280z

Thanks for the info, everyone. I'll get to trying the 12 volts to the terminals trick and see if that works.