Hope someone can help me with this frustrating situation. My 240 SX with an RB 25DET swap starts perfectly idols nice and smooth from cold start to warm up but then when you rev it and release the gas pedal it will not re-catch the idle and it sputters and dies. I adjusted the throttle position sensor to read .48 V, replaced the IAC .
When I turn the screw in and out it raises and lowers the idle as it should, but again, when you give it a rev and release it sputters and dies. When I start it back up it goes right back to a nice idle again.
at times I hear a "click click" eminating from what looks like a two inch long , large diameter hex bolt attatched to the head , towards the front of the car . It has a two wire connector attatched to it's end and that is where the clicking is coming from. car has been checked for vacuum leaks and I cannot find any.
I sure hope this sounds familiar to somebody have not been able to drive the car for sometime now thank you so much everyone.