QUOTE(motomadness1947 @ Sep 3 2010, 08:07 PM)
QUOTE(jim_hoyland @ Sep 3 2010, 06:08 PM)
At ambient temp, mine open 1/3 to 1/2; if put into the freezer, opens about 2/3...
Mine does not look like what you have pictured.
1st ... Jim imaged a 1.8L L-Jet Aux Air Valve. It can be made to work on a D-Jet system, but requires a power wire and ground wire. Functionality is the same, operation is slightly different.
2nd ... The D-Jet Aux Air Valve is grounded and the body is the ground. One power wire is the only hookup (as you have figured out)
3rd ... The D-Jet one should close completely. When I "blow test" a good one, lots of air passes when cold; When hot it completely shuts off the air. The rotating valve can get stuck and not operate correctly. Filling the top portion with PB Blaster or cleaning with Carb Cleaner may free it up. Do this procedure cold as you don't want to start a fire on the car.
4th ... I bench test them prior to installation.
5th ... It can be removed or the lines plugged with a ball bearing to negate any air leakage. It is only functional for fast idle on cold start up. If you don't mind sitting in the car with your foot on the loud pedal to keep the car idling when cold, the car will run fine without it in the circuit.
6th ... "Rebuilding" is a misnomer. Making it functional is all they can do. The heater element can be repaired (or so they say), but is not replaceable. The rotating valve can only be cleaned so it functions.
7th ... supposedly they can be disassembled. I've never tried to do it as I don't have a proper tool to crimp the top portion to the bottom portion, not do I have a tool to properly spread the crimp for disassembly.
that's it for me.