Quote:
Originally Posted by Gasoline Fumes
... An easy test that works with a manual might work with an auto too. Manually shift into 1st gear and accelerate from a stop up to 3000 RPM. Take your foot off the gas and you should feel the injectors come back on around 1000-1500 RPM. My car will buck a little when this happens. ...
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Another way to test for DFCO capability would be with a ScanGauge or UltraGauge (or a mechanics' scan tool). With any of these you car read the O2 sensors output (and often the short term fuel trim too) That data will show you when/if the injectors get cut off.
EDIT: My point partly is that if you don't "feel" DFCO it does not mean it does not exist. Sometimes I don't feel the shift, and I have felt it hundreds of times, yet my scan gauge will show the shift to DFCO happening nonetheless.