E90 325i Sport - high temperature

[mossey]

Guys, need to check if any forumers experiences high temperature after high speed driving (>160kph for >10minutes). My 325i Sport recently giving out high temp alarm when I drive at above mentioned speed. What could be the problem? Thermostat or Water pump? (Mileage is 65k and its a Y2007 car and its E90 I think)FYI, I am pissed with the car as its not robust (compare to my other Japanese car). Last month, I have to change ABS pump which cost 10k (before discount). Few months ago the central locking went bonkers. That was replaced by Ingress.:motz:Thanks much

 

[Spaceman]

>160 for >10mins ?
I have not done this b4... but I believe it should be fine for stock std car in good running condition.

 

[e60FANster]

no problem with over heating > 200 for > 10 mins also, juz check water n coolant level first.
if all OK den start diagnosing the sensor then the pumps, better get it check out before goodwill warranty flies out the door.
gud luck n hope yr problems stop surfacing, some are luckier than others in their ownership of their beemers.
my car is close to a yr old so far no problem watsover hopefully can be tt way for e next 2-3 yrs.
happy to own a car for 3-4 yrs without much problems, juz regular servicing wld suffice.

 

[zeedo]

Try to do pressure test on your radiator to detect any leaks, driving at high speeds means you have enough air flow but maybe your coolant flow is either not sufficient or is restricted. Most probably not the thermostat cause if it stuck, you'll have high temp even at low speed

 

[E46Fanatic]

Sounds like the infamous electric water pump issue. Mileage about right before it begins to loose its efficiency. Anyway, keep us updated on the diagnosis from the Svc center. We should prepare a database of age and mileage our E90 components start to fail.

 

[Mun]

how about low on oil?? Six cylinder seems to consume oil pretty quickly once the bar start dropping especially with lots of hard driving.

 

[mossey]

Ok guys, according to Ingress, the radiator is partly blocked (don't know how) thus reduced cooling capabilities. Need to send to Ingress next week to flush it. Hope it will solve this.

 

[astroboy]

Wah! partly block also they know ka? Interesting.. block by what hor? I wonder?!

 

[karisma hijau]

the previous owner must have not carried out the annual radiator flushing and coolant replacement.

the radiator can get clogged by the etylene glycol particle(those thingy that givey ur coolant green/blue colour) as the water dries up throughout usage. That's why there's some people who use plain old tap water for their coolant(esp on older car) to prevent this problem.

 

[astroboy]

Actually I do notice my Toyota red color LLC (long life coolant) when dries up, it turns in to powder!! I can see these powder surrounding my reservoir cap and radiator cap.. scary!

 

[zeedo]

Exactly what happened to my radiator, those powder will clogged the bottom water passage of the radiator and area near the water pump. I have the picture but don't know how to upload...

My mechanic did not change the whole radiator but only the plastic part where the coolant flows. I think annual flushing will avoid this kind of thing from happening

 

[zeedo]

This is how it looks like (my clogged coolant passage at the side of the radiator)

 

[B33mEr]

Looks like lime scale or minerals deposits rather than the glycol coolant residue ...