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The acronym "DFCO" is a recent event, but I'm not sure how far back it's been in use. Maybe it's always been around but the parameters are different.
It usually is in effect before 1200 rpms. under 1200, the engine gets fuel again.
An example:
For yaris *US models*... many 07s, dfco only kicked in when you were in 3rd gear or lower. Then in 08, Toyota implemented it in all the gears, you just had to be coasting in gear.
One way to tell...If you have a manual, go into 2nd gear, speed up to 25 or 30, which ever makes you surpass 3k rpms. Coast. When you start to get down to the 1k rpm range, if you feel a slight give-- I would describe it as seemingly to go neutral for a split second (as experienced in my yaris). You may have DFCO.
An easier way to tell is with a scan gauge. Set your meters to read gph, rpms, lod, mpgs. You're mainly paying attention to gph (gallons per hour). If your SG reads this: GPH: 0.00 OR 0.02 RPMS (ABOVE 1200) LOD: (UNDER 20) AND MPGS SHOOT UP OR READ 9999 ACROSS, ---- Then you have DFCO.
GPH may read 0.02 in older versions of SGs.
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**ADAM! A/C button for Gen 5.5 Camry (2005 LE) !! Por favor!
Brake lights aren't broken, I just don't brake.
--Can honestly go to a parts counter and ask for brake shoes for the front brakes.
--Likes long walks on the beach.... once it's lit by a massive bonfire.
Last edited by RningOnFumes; 08-05-2008 at 05:40 PM.
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