M3 E46 Running probs...
Discussion
Hello Pistonheads,
I have an 05 manual M3 which overnight went from driving lovely to serious loss of horsepower & i had no EML light on... Had a diagnostic by my local indy who found no faults, apart from the engine was running slightly cold.... ive had a thermostat fitted today & voila, back to full power... I thought a sensor would have picked this up???? anythoughts???
Also im non SMG with 63k on the clock & presume im on the original clutch... The footpedal seems heavy to me (mind you i havent compared to another M3), is this typical & is the gearchange typically quite slow to select 1st & is generally quite longthrow & notchy??? Or is because im comparing it to my previous S2000!!! There is no sign of clutchslip.. your thoughs are welcome.. Im knew to this forum........
I have an 05 manual M3 which overnight went from driving lovely to serious loss of horsepower & i had no EML light on... Had a diagnostic by my local indy who found no faults, apart from the engine was running slightly cold.... ive had a thermostat fitted today & voila, back to full power... I thought a sensor would have picked this up???? anythoughts???
Also im non SMG with 63k on the clock & presume im on the original clutch... The footpedal seems heavy to me (mind you i havent compared to another M3), is this typical & is the gearchange typically quite slow to select 1st & is generally quite longthrow & notchy??? Or is because im comparing it to my previous S2000!!! There is no sign of clutchslip.. your thoughs are welcome.. Im knew to this forum........
Diagnosis of engine temp is a bit tricky, the sensor works fine, but it can't tell if the engine should be hot at any point, it would just assume it's a cold day.
Newer ECUs might be smart enough to model temperatures, but in your case, it just reads the real temp, and deals with it.
Heavy clutches are an M thing, usually the more powerful a car is, the heavier they make the clutch so they can have something that will take the power without having to fit a massive clutch disc. The boxes can be a bit notchy, a gearbox oil change might help, but you do get the option of trying some fancy oil in there, Redline or Royal Purple were popular, but there is a chance they can change the feel too, possibly for the worst!
Newer ECUs might be smart enough to model temperatures, but in your case, it just reads the real temp, and deals with it.
Heavy clutches are an M thing, usually the more powerful a car is, the heavier they make the clutch so they can have something that will take the power without having to fit a massive clutch disc. The boxes can be a bit notchy, a gearbox oil change might help, but you do get the option of trying some fancy oil in there, Redline or Royal Purple were popular, but there is a chance they can change the feel too, possibly for the worst!
te - BMW M engineers tend to have a good feel of things and the oil they recommend is the stuff to be used imhoGassing Station | M Power | Top of Page | What's New | My Stuff