MitsuStyle - View Single Post - Cold plugs, cold weather cold start idle implications

TheBlizzard · 11-23-2010

If you car is harder to start when it gets below 30 degrees it is likely one or both of your coolant temp sensors are bad. If they are bad the ECU thinks the air temp is hot so it does not enrich the fuel enough to start it. I would check there first, if not your ECU could have issues as well.

11-23-2010	#4
TheBlizzard Join Date: Oct 2003 Location: Red Wing, MN Drives: Too Many Posts: 3,184	Re: Cold plugs, cold weather cold start idle implications If you car is harder to start when it gets below 30 degrees it is likely one or both of your coolant temp sensors are bad. If they are bad the ECU thinks the air temp is hot so it does not enrich the fuel enough to start it. I would check there first, if not your ECU could have issues as well.