85 300zx turbo starting/warm up problem

[katstevens]

Hello,

This problem has been ongoing for a long time and I can't figure it out. When I start the car it's fine but after about a minute the idle drops very low, almost to the point of dying and starts running really rich. If I hit the accelerator to get the rpms up, it bogs and stutters. But then, as soon as it reaches operating temp, all that stops and it runs fine. I have replaced the cold start sensor and the crank position sensor. I also ran the diags on the computer and came up with nothing. Any ideas? Your help would be much appreciated!

[toddrs93]

Did you ever figure this out?
Throttle position sensor maybe?
Interested to here the fix.

[perna00]

I got the same exact problem. If I use the a/c; it will idle higher and keep it running a little better. It is something with the amount of air entering the system. Maybe the air bypass valve or the auxilary air?