Tuesday, September 11, 2012 - 08:50 am, by: Ian Rigby(Hiro)
Not really sure if this has been happening for a while now (don't need to use CC around town), but for some reason if I turn on the cruise control and set it the car starts to accelerate. If I try and set it at 50km/h (so well above the minimum) it'll accelerate to easily above 60. If I set it at 110 it'll usually creep up to about 115 (haven't had much of a chance to try it at other speeds though).
Car has a PowerFC and (either because of the PFC or because of another mod) the CC has been de-limited, but it has been working perfectly fine up until relatively recently at least.
Any ideas? CC light doesn't flash to indicate a problem, but I haven't tried pulling codes or playing with the butterfly/actuator yet.
Julian Mazur Tinkerer New South Wales SC300 Twin Turbo
Tuesday, September 11, 2012 - 10:00 am, by: Julian Mazur(Jules30)
Not sure, my cruise is stock. But still seems to wander a bit. I'll only use it on the highway, at 108 but it still seems to wander from 105-113. Unless its late at night with no cars around I drive without it.
Tuesday, September 11, 2012 - 08:03 pm, by: Ian Rigby(Hiro)
I don't drive it every day, but the times I do it seems fairly easy to maintain a constant speed without using CC, so I don't think it is throttle/pedal-related.
Tuesday, September 11, 2012 - 09:06 pm, by: Blake Gloyn(Blakenz)
my question relates to if the car varies indicated speed(ie on the speedo) but actually doesn't change its speed at all. If so, the speedo sensor on the trans is faulty, and plays havoc with cruise control. Easy to replace.
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