ZR-1 Net Registry Forums - View Single Post - Sound of pump at start-up

Ccmano · 10-31-2018

Those are the AC temp and pressure sensors. Pump is probably the air injection pump for emissions. Turns off after a few minutes. The pump is located driver side ahead of the wheel well next to the radiator. The pump and sensors are not related.
H

10-31-2018	#2
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,843	Re: Sound of pump at start-up Those are the AC temp and pressure sensors. Pump is probably the air injection pump for emissions. Turns off after a few minutes. The pump is located driver side ahead of the wheel well next to the radiator. The pump and sensors are not related. H Last edited by Ccmano; 11-01-2018 at 11:25 AM.