Sliding IAC counts... - ZR-1 Net Registry Forums

Paul Workman · 10-31-2011

Got the Z running again, but an old puzzle remains present & unsolved; in spite of new gaskets all round ('cept the TB gaskets which were changed earlier this year) with no change in characteristics.

What it is...

On startup and the engine is cold, my IAC counts are in the 20s, but after it is fully warmed up and especially if it has been at or close to 7k+ rpm, the counts drop to zero.

Anyone else notice IAC counts changing as the engine warms up?

P.

10-31-2011	#1
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	Sliding IAC counts... Got the Z running again, but an old puzzle remains present & unsolved; in spite of new gaskets all round ('cept the TB gaskets which were changed earlier this year) with no change in characteristics. What it is... On startup and the engine is cold, my IAC counts are in the 20s, but after it is fully warmed up and especially if it has been at or close to 7k+ rpm, the counts drop to zero. Anyone else notice IAC counts changing as the engine warms up? P. __________________ Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry