Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - How long should an engine stay in open loop after start

bombloader · 12-06-2009, 08:08 PM

I tried shutting off my engine at some long lights, and I noticed that after I started it stayed in open loop for 5-10 seconds(Using the scangauge). It was a warm engine, 200+ degrees on the water temperature. Has anybody else encountered this? BTW, I noticed that it doesn't stay in open loop if you bump start it. I'm wondering if somehow the ECU is programmed to stay in open loop for a set period of time after the starter is used? Or is there possibly something wrong here?

12-06-2009, 08:08 PM	#1 (permalink)
bombloader EcoModding Lurker Join Date: Nov 2008 Location: boise id Posts: 64 The XT - '92 Yamaha XT225 Serow Last 3: 80.67 mpg (US) White Civic - '08 Honda Civic Hybrid 90 day: 38.23 mpg (US) Blue and White Beast - '78 Ford F150 90 day: 11.33 mpg (US) Red T100 - '93 Toyota T100 90 day: 14.7 mpg (US) Thanks: 1 Thanked 5 Times in 4 Posts	How long should an engine stay in open loop after start I tried shutting off my engine at some long lights, and I noticed that after I started it stayed in open loop for 5-10 seconds(Using the scangauge). It was a warm engine, 200+ degrees on the water temperature. Has anybody else encountered this? BTW, I noticed that it doesn't stay in open loop if you bump start it. I'm wondering if somehow the ECU is programmed to stay in open loop for a set period of time after the starter is used? Or is there possibly something wrong here?