16-03-2012, 11:24 AM
Not saying this is it, but since you are at a college and it's an engineering issue, it's worth considering.
Drive trains have oscillatory frequencies, and it may well be that in that gear with that much force being applied the system is oscillating badly.
DMF is there to protect from really bad oscillations, and other engine mapping routines, since these engines generate a lot of torque and gearbox loads at low (gearbox) rpm where their natural frequencies occur.
Is the car tuned?
Is the DMF damaged, and so making some weird oscillations happen over that rev range?
That is just me wondering, no idea if that is it or not, or if that is even possible
It might be really obvious from how it's driving. Is it actually low on power (which it would be if you had slipping clutch, injectors not firing or bad injections happening, etc), or does it accelerate as you would expect, just with lots of wobbling at the same time?
Dave
Drive trains have oscillatory frequencies, and it may well be that in that gear with that much force being applied the system is oscillating badly.
DMF is there to protect from really bad oscillations, and other engine mapping routines, since these engines generate a lot of torque and gearbox loads at low (gearbox) rpm where their natural frequencies occur.
Is the car tuned?
Is the DMF damaged, and so making some weird oscillations happen over that rev range?
That is just me wondering, no idea if that is it or not, or if that is even possible
It might be really obvious from how it's driving. Is it actually low on power (which it would be if you had slipping clutch, injectors not firing or bad injections happening, etc), or does it accelerate as you would expect, just with lots of wobbling at the same time?
Dave