Clicking noise with ignition on - ZR-1 Net Registry Forums

emorse · 05-19-2021

1991 ZR-1
When I turn the ignition on but don't start there is a steady clicking noise. I tried to locate source but no luck yet. It appears to continue for as long as the ignition is on. Insights?? Thanks

TX '90 ZR1 · 05-19-2021

What general area is the sound coming from?

Ccmano · 05-19-2021

Secondary vacuum pump?
H

32valvesftw · 05-19-2021

Does your power antenna work? could be slipping
Maybe a plenum door in the HVAC system?
You could start pulling fuses to see if you can isolate the system.

DRM500RUBYZR-1 · 05-19-2021

Might your battery be discharged?
If below a certain voltage various things cycle on and off making such a noise.
Get your battery charged and tested, then let us know if it is still going on.

Marty

tccrab · 05-20-2021

If the bushings in the headlight motors have turned to dust the motors will run continuously making an odd noise.
Try turning on the headlights, if they don't rotate, theres your smoking gun.

'Crabs

05-19-2021	#1
emorse Join Date: May 2021 Location: Waynesboro, VA Posts: 9	Clicking noise with ignition on 1991 ZR-1 When I turn the ignition on but don't start there is a steady clicking noise. I tried to locate source but no luck yet. It appears to continue for as long as the ignition is on. Insights?? Thanks

05-19-2021	#2
TX '90 ZR1 Join Date: Oct 2017 Location: TX Posts: 2,038	Re: Clicking noise with ignition on What general area is the sound coming from? __________________ Kenny 1990 #442

05-19-2021	#3
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Clicking noise with ignition on Secondary vacuum pump? H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

05-19-2021	#4
32valvesftw Join Date: Jun 2015 Location: Texas Posts: 530	Re: Clicking noise with ignition on Does your power antenna work? could be slipping Maybe a plenum door in the HVAC system? You could start pulling fuses to see if you can isolate the system.

05-19-2021	#5
DRM500RUBYZR-1 Join Date: Sep 2008 Location: Mullica Hill, New Jersey Posts: 2,593	Re: Clicking noise with ignition on Might your battery be discharged? If below a certain voltage various things cycle on and off making such a noise. Get your battery charged and tested, then let us know if it is still going on. Marty

05-20-2021	#6
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,655	Re: Clicking noise with ignition on If the bushings in the headlight motors have turned to dust the motors will run continuously making an odd noise. Try turning on the headlights, if they don't rotate, theres your smoking gun. 'Crabs __________________ TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B]