For reasons I don't understand, my car WILL Auto Stop even when it's freezing outside. I looked at the wires for the Outside Air Temperature sensor and they don't look like they've been messed with, but last winter in Canada I was regularly able to get AS on days when it was well below freezing.
That said, I was initially building this with a relay to also trick the computer as to what the OAT sensor says, but my problems with the pulses and VSS and ECM in general led me to focus instead on just getting Auto Stop to reliably occur.
A problem I'm encountering is that, because I know it's unlikely to Auto Stop with the switch on, and I know that if I misapply the switch it will then NOT Auto Stop, when I drive I hesitate to even test it because I want to get good tank mpg and I'm wasting gas every time I press the switch and it doesn't AS.
I think spoofing a speed down is a really good idea, I will have to look into the feasibility of designing the circuit in that fashion.
Quote:
Originally Posted by brucepick
Now once speed (apparent to computer) is below 20 mph and autostop activates - I think it stays in a/s as long as its in neutral or clutch is in use, AND (apparent) speed has to stay low.
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In my vehicle, it will NOT stay in AS unless clutch is in AND/OR car is below 4kmh AND/OR brake is still on. So like, I gotta hold my brake switch, have clutch switch on, or have the car close to stopped or the engine will restart immediately. I think this is incorrect behaviour from everything else I've read. But so is having AS when it's well below freezing.
PS:
20mph is about 35kmh which is when I typically see AS occur.
