Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post

frsh2fourty · 03-20-2017, 09:37 AM

So just to update since I finally got a chance to work on the car...

I tried the propane method to test for vacuum leaks including the BOV which didn't seem to show anything.

I finally broke down and bought a new IACV and installed it yesterday. That seemed to fix the surging idle but idle still won't go below 1600 RPM when warm with the idle screw closed completely and wideband gauge reads about 11.0 so its still running pretty rich.

I'm going to make a boost leak tester and try that sometime this week and I'll update again after that.

03-20-2017, 09:37 AM	#10
frsh2fourty Join Date: Jan 2007 Location: Houston, Texas Age: 34 Posts: 49 Trader Rating: (0)	So just to update since I finally got a chance to work on the car... I tried the propane method to test for vacuum leaks including the BOV which didn't seem to show anything. I finally broke down and bought a new IACV and installed it yesterday. That seemed to fix the surging idle but idle still won't go below 1600 RPM when warm with the idle screw closed completely and wideband gauge reads about 11.0 so its still running pretty rich. I'm going to make a boost leak tester and try that sometime this week and I'll update again after that.