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Old 04-08-2011, 08:50 PM   #7 (permalink)
Kodak
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Join Date: Feb 2011
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Canyon - '07 GMC Canyon 2wd regular cab
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Quote:
Originally Posted by Old Mechanic View Post

@kodak

1800 RPM for DFCO sounds high to me. It does go to a higher RPM when you have any additional electrical loads, especially AC. Try decelerating in 3rd gear with no additional loads applied. Not saying you are wrong but DFCO on some cars works down to 800 RPM.

regards
Mech
Here's how I tested it last time, maybe I did something wrong.

I put it in second gear and gave it some healthy throttle. Then, I let it decelerate on its own. Around 1800 I felt a slight bump, so I assumed that was the injectors giving it gas.

I'll try it in 3rd to see if it behaves differently.

Is the DFCO rpm the same in every gear?
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