157 posts · Joined 2014. #14 · Jan 22, 2018. my engine runs at temp between 93 to 98. Columbo said: Hello all, Particular to the 520i M52 ENGINE: I'm starting to monitor full time, every time I drive, I'm going to leave the "secret menu" coolant temperature digital reading on, all the time. Starting from what temperature should I stop, engine remove both the radiator hoses. unplug and remove the temp sensor. remove the 5-10mm bolts from the housing. once the housing is loose, carefully remove the housing from the 3 o-ringed pipes under the plenum. once free, just pull it the housing out. it may be difficult but it will come out with a little finesse. My Bmw E60 525i is hard starting and stalling when cold. Once it reaches proper temperature eveything is normal and I - Answered by a verified BMW Mechanic We use cookies to give you the best possible experience on our website. 4984 posts · Joined 2008. #6 · Aug 9, 2011. Maximum coolant temp is the boiling point of your fluid. This is the point at which the vapor bubbles [and their poor thermal conductivity] in the coolant allow the engine to create more heat than the cooling system can exchange to the atmosphere; Due to nucleation of said bubbles along the engine's

The scanner shows only 2B59, so decided to change the thermostat. After finishing the work, the return hose from thermostat to radiator for cylinders 6-10 was not snapped into place correctly. Just 300meters from home,the coolant started spraying out of this hose and the low coolant light turned on. I immediately killed the engine.

1164 posts · Joined 2016. #2 · Apr 18, 2021. The Computer will trigger the check engine light if your thermostat is failing in operation. If its stuck open, the car won't reach operating temperature in the designated time, triggering the check engine light, with increased emissions message. If the thermostat, for whatever reason, is unable to
1) new water pump from Bmw 2k miles ago. 2) thermostat 90c using genuine Bmw housing. 3) new coolant with distilled water. 4) replaced all belts and pulleys. 5) transmission fluid and filter 5k miles used the zf kit. The engine coolant temp seem to be fine, hover around 97-99c driving in city, idling get up to 102c, freeway stay around 95-96c.
That is pretty normal. BMW even changed the temperature gauge on the F30/F80 series, because a lot of people were concerned about the oil temperature going over the "normal" half way position, just like you. Now the half way is 120°C/250°F. That temperature is fine for the oil, you shouldn't worry.
2008 BMW 528xi. E60 Intermittent climate controls & engine OH messages .. BUT I monitored engine temp in hidden display and it's running at completely normal
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    • bmw e60 normal engine temperature