High Idle Issue - ZR-1 Net Registry Forums

Hammer · 09-09-2007

I have had a high idle issue for about a week now. Last weekend I started the Beast and it didn't quite catch, ended with what could be called a backfire, but it was very small. Since then I have searched the forums for anything I could find and it appears a vaccum leak is imminent. I have replaced the common problem, the PCV connector (it needed it) but can't seem to see anything else loose or hissing that would cause this.
I start it and it will idle high at about 2000 RPM and slowly reduce to around 1000.

What else could be causing this issue? Does the Plenum need to come off?

Thanks

09-09-2007	#1
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	High Idle Issue I have had a high idle issue for about a week now. Last weekend I started the Beast and it didn't quite catch, ended with what could be called a backfire, but it was very small. Since then I have searched the forums for anything I could find and it appears a vaccum leak is imminent. I have replaced the common problem, the PCV connector (it needed it) but can't seem to see anything else loose or hissing that would cause this. I start it and it will idle high at about 2000 RPM and slowly reduce to around 1000. What else could be causing this issue? Does the Plenum need to come off? Thanks __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]