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Joe (?)
If I'm reading your posts correctly, the car is stalling as it drops down to idle. Assuming you get to idle without stalling, it's fine. Once it stalls, it starts right back up without any problem. Have I got it right?
Assuming I've got it right, it sounds like your IACV is sticking or your AACV is acting up. The IACV is what controls the amount of air coming into the engine when the throttle plates are closed (at idle). If it gets stuck, you can end up with no air/not enough air coming into the engine when the throttle plates close. The IACV is mounted to the underside of the Throttle Body. It has a dedicated air line that goes into it (other end taps into the "Snorkle"). You might try disconnecting the line from the "Snorkle" and spraying TB cleaner into it while the car is running. It will try to cut out on you, just work the throttle.
I ended up having to remove my IACV and clean it - spraying TB cleaner into it while I worked the little "window" that opens and closes to vary the amount of air flow.
Hope this helps.
-Bill
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Retired NASA Rocket Scientist
Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023
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'92 Fully caged, 5 speed, waiting for its fully built EG33
'92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension
'92(?) Laguna, 6 spd and other stuff (still at OT's place)
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