High idle after running.. Some questions - ZR-1 Net Registry Forums

-=Jeff=- · 05-01-2008

I did some searching on here, but I need to be verified..

with key on, not running, secondary pump runs every 30 secs for about 10 secs maybe..

When I start the car the it idles around 700 rpm.. if I drive it a short bit it will not drop below 100 it seems.

Can the secondary vacuum lines be a cause of the higher idle? Primary map is connected fine, as is fuel regulator. I took the vacuum hose off the driver side of plenum and blew air in it.. that is okay.. I know there are probably more I need to look at any spots more then others?

I need to put my scanner on it and check the IAC steps and such too, but I did not have time tonight.

just trying to see what I need to look at, I really don't want to pull the plenum but if I have to I will.

05-01-2008	#1
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,133	High idle after running.. Some questions I did some searching on here, but I need to be verified.. with key on, not running, secondary pump runs every 30 secs for about 10 secs maybe.. When I start the car the it idles around 700 rpm.. if I drive it a short bit it will not drop below 100 it seems. Can the secondary vacuum lines be a cause of the higher idle? Primary map is connected fine, as is fuel regulator. I took the vacuum hose off the driver side of plenum and blew air in it.. that is okay.. I know there are probably more I need to look at any spots more then others? I need to put my scanner on it and check the IAC steps and such too, but I did not have time tonight. just trying to see what I need to look at, I really don't want to pull the plenum but if I have to I will. __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - 3" Magnaflow Bullet cats - LT4 Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978