Quote:
Originally Posted by roosterk0031
I'm surprized the Grand Am doesn't have DFCO, my 03 Malibu and 98 Stratus do, but to get them to activate I need to manually downshift the auto's and have strong engine braking, fairly high RPM. Useless without big hills where you want engine braking to control max. speed.
DFCO in the Cobalt does me no good, I don't have hills steep and long enough to not slow down if I leave it in gear, and I think engine RPM has be above 1800 or so, so it seems to quit around 50 mph. I only messed with watching it one day and SGII in other car now so memory could be off alittle.
The other issue with trying to get it to DFCO, idle consumption is 0.3 gph, in gear coasting when DFCO isn't working is 0.5 gph and I'm loosing speed. Even when a hill is big enough and speed high enough, it takes about 5 seconds before it cuts the fuel.
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The grand am might have DFCO, but driving in any condition i've done so far with it i have not been able to reach DFCO. It might be like your cobalt where it has to be a certain circumstance to reach DFCO, but on any of the hills i go down im doing 55-60mph