| I had/have a similar issues with my 96NA. The RPMs will hang around 1200-1500 when I let off the throttle coming to a stop and then they'll drop down to where I have the idle set a few seconds later. I have my idle bumped up to around 850, stock is around 750. When I do the "correct way" to set idle and let the ECU control it the problem goes away except my Z idles happier at 850. When I unplug the TPS sensor the RPMs will jump up to exactly where it hangs during deceleration, but drops down to where its set when plugged in. I haven't been able to find/verify why it acts this way. I've tested every single mechanical and electrical component that has to do with idle control and everything is good. Im thinking its something to do with the way the ECU learns how to idle the engine and the process to do it. My 94 TT doesn't act like this at all no matter where I set the idle speed.
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