geedimensions
07-24-2010, 02:29 PM
My check engine light is on. I went to check it at Advance auto parts and these two codes came up e P0117 and P0420. He says it has something to do with my cooling system for my engine. now my air conditioning is now blowing hot air. I figured it may be the thermostat and plan to change it. Does anyone have a detailed description of how to DIY?