Contour Enthusiasts Group Archives Forums General Troubleshooting Humming noise coming from driver side of engine.

I had a humming noise once it would start and stop, but it was a loud whine with vibration at the air filter box turned out to be idler motor and car would jerk and stall under braking after about 30min driving. Stalling started a couple days after I herd the noise.
Just thought this may help your diagnosis.