Post by
USMCgetsome »
https://forums.nicoclub.com/usmcgetsome-u15451.html
Thu Feb 19, 2009 4:22 pm
PROBLEM SOLVED! Replaced PCV valve. Also, replaced the hoses of the pcv system with new worm grove clamps.
Removed and tested both iacv and air regulator. Watched manually for the air reg to close with 12vdc applied and proper ohm resistance. Iacv also checked with 12vdc, ohms good, solenoid acutates properly.
Removed that iacv, air reg harness and cleaned and treated all connectors.
Replaced all vacuum hoses and worm groove clamps. Some had small cracks and splits also a little loose with those spring clamps.
Replaced intake manifold gaskets x2.
Started her up and she fires and idles at 750 rpm no adjustments made to iacv at all (fast idle screw is half way)
Fellas my idle problem was an air leak. Plain and simple. I just wonder which one of these fixes did the job.
My suggestion to all of you is to just do all that i did and replace all hoses and clamps and clean up that intake manifold.
Good luck!