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Reading the Engine Temperature??
Since the new E90 doesnt have a temperature gauge, what information does it provide to the driver? Say for instante there is a cooling problem with the engine (water pump quits, thermostat stuck, etc) -- with a gauge I would notice the engine running warmer than normal and pull over before the needle is in the RED.
If all we get is an idiot light, I'm afraid it woudlnt come on until the red area, which to me seems like too late a warning before you start running the risk of damaging the engine. Also, I wont be getting I-Drive.
I'm wondering if its anything like the oil level display, where we would get some sense of Normal Operating Temperature, Warmer-Approaching-Hot, and Overheat/Danger.
So does anyone know how it works?
| | Reply » Reading the Engine Temperature?? |
I share your preference for gauges, but recent experience tells me idiot lights have come a long ways. In my 99 Ford, the battery light came on several days before the gauge started to show a reduced charge - the alternator quit a day later. I ignored the idiot light and went with the gauge - which cost me a new battery! I guess both would be great - esp. if the light doesn't tell you how severe the problem is.
| | Reply » Reading the Engine Temperature?? |
The E90 3-series, like all other newer BMW models, has more than just the Engine Temperature Warning light that comes on when worse comes to worst. The rev-counter has a series of lights all the way around it, much like the M3, but the lights are much better executed and have no visible gaps. When the temperature of the engine is low, the lights will extend all the way to 4000rpm or so. As the engine comes to operating temperature, the light bar retreats back to the 7000rpm mark. The lights, therefore, provide you with all the information you need to determine whether you can use the engine to its full pontential yet or not.
The warning light is only needed to determine if the temperature is too high.
| | Reply » Reading the Engine Temperature?? |
The E46 has hidden OBC functions which one can unlock to display the actual engine temperature. I expect the E90 to have the same capability. So don't fret. If you really need to access the engine temperature in the E90, you probably will be able to.
| | Reply » Reading the Engine Temperature?? |
So, does anyone know what temperature will set off the warning lights?
Say if the thermostat is a 195 degree stat, and "red zone" on the usual analog gauges is 290*F, I want that light to come on around 260 or so... (just throwing out numbers, but you get the idea)... If the light only comes on after the engine is hot enough to start causing damage or warping, then whats the point of it?
| | Reply » Reading the Engine Temperature?? |
Quote: The E90 3-series, like all other newer BMW models, has more than just the Engine Temperature Warning light that comes on when worse comes to worst. The rev-counter has a series of lights all the way around it, much like the M3, but the lights are much better executed and have no visible gaps. When the temperature of the engine is low, the lights will extend all the way to 4000rpm or so. As the engine comes to operating temperature, the light bar retreats back to the 7000rpm mark. The lights, therefore, provide you with all the information you need to determine whether you can use the engine to its full pontential yet or not.
The warning light is only needed to determine if the temperature is too high. | I'm not sure about that. I wish it was true, but when I asked my dealer if the E90 had the variable tacho lights he said that only the M models had this feature. Other people who I have asked on other forums tell me that this feature does not exist on their E90s.
The cold-start warm up phase and the lack of an oil dipstick in the engine bay are the two things that are most worrying me when I pick up my 325i in June.
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Reading the Engine Temperature??