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Originally Posted by FrodoGT
OR, you could pull the hazard fuse for about 10 secs...the ecu doesnt really save any settings, that would be pointless, it is constantly changing the variables to meet parameters set in the program, and if you step outside them it lets you know, running the car for 20 minutes will likely cause it to run real rich untill you clear it out some. those codes will stick around...the hazard fuse is the one at the very bottom of the under-hood fuse box when viewed from the passenger fender...it is a 10 amp.
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Actually, you should probably go ahead and pull the 15a ECU fuse as well as the hazard fuse. One time when my speedo cable popped out a bit, I threw a code 17 and I pulled the hazard fuse and it didn't reset the ecu until I pulled the ecu fuse.
Also, you don't have to let the car sit for 20 min. You should just reset the ecu and then start the car and let idle for 5 min. then cut it off, then start it up and drive as normal. Honestly, I don't think that's even necessary...