| Originally posted by 325isBaby@Oct 7 2004, 05:03 AM |
Sounds to me as though the Ambiant Air Temp Sensor has died...when the signal goes away the DME assumes a "fail safe" programed value...at the coldest reading it will affect how much fuel is being dumped into the cyliders and what kind of timing you are running.* Hopefully you find this information helpful.
I guess you learned all that technical shit on your 3 year diploma eh? - but they forgot to mention the "ICE WARNING" system to you!!!
Here's a couple of quotes from around the world On the e60
"And the ice warning sound is the most soothing I’ve ever heard" On the BMW mini
"What's that beep that seems to occur when I start the car/when it's cold?
This is not (at the time of writing) documented by MINI, but at 3° Celsius, or 37° Fahrenheit the MINI will 'beep' or 'chime' to warn of the danger of possible 'black ice' on the roads.
The temperature read out will also flash to alert you of the possible hazard." On the E46
"When function is “active”, and if ambient temperature drops below 370F, the acoustic ice warning sounds and the ambient temperature display flashes for a few seconds. Then the display returns to the previous status. When function is “not active”, and if ambient temperature drops below 370F, the acoustic ice
warning sounds and the ambient temperature is permanently displayed."
So you spout all this crap about fuel mixtures and timing and DME just to try and make youself sound good and ascertain your value as a "TECHNICIAN", when in fact the most likely answer is very simple and has come from me - an old time "part swapper" who "gave up when the 7 series became mainstream".
LOL go talk shit to yourself.
540i I would seriuosly consider just replacing the temp sensor (found behind the front bumper on a lot of cars but not sure about the bmw) and wouldn't worry about "how much fuel is being dumped into the cyliders and what kind of timing you are running", the car is just trying to warn you (wrongly) that there's a chance of hitting ice.