What's wrong with my E90 330i?
Discussion
Hi all, just had my 330 recovered to a local garage. Was on the motorway only 5 or 6 miles after leaving home, having just stopped a couple of miles back for fuel.
Idrive flashes up amber temperature warning, which turned to red in about 30 secs. As luck would have it just passing services so pull in.
So all the coolant has emptied out of the tank, AA chap tells me bottom hose from rad is cold, while top is hot. Thinking water pump but doesn't seem to be similar symptoms to other failures. Anyone got any other theories?
Idrive flashes up amber temperature warning, which turned to red in about 30 secs. As luck would have it just passing services so pull in.
So all the coolant has emptied out of the tank, AA chap tells me bottom hose from rad is cold, while top is hot. Thinking water pump but doesn't seem to be similar symptoms to other failures. Anyone got any other theories?
Just a thought, but BMW expansion tanks do seem prone to splitting.
Although my first thought when I saw your heading was electric water pump - I had one die in a Z4 Coupe, but it didn't lose coolant (got very hot very quickly though - but at least it has a proper temperature gauge)!
Hope you get it sorted OK.
Although my first thought when I saw your heading was electric water pump - I had one die in a Z4 Coupe, but it didn't lose coolant (got very hot very quickly though - but at least it has a proper temperature gauge)!
Hope you get it sorted OK.
I was advised to change my thermostat when the water pump died on my N52, so I had it done!
OEM parts + labour at an independent the whole disaster only cost a little over £800!
So I sold the car (or is that money pit)!
It didn't last too long though, I (stupidly?) bought another and love it (well until it rapes my wallet)!
OEM parts + labour at an independent the whole disaster only cost a little over £800!
So I sold the car (or is that money pit)!
It didn't last too long though, I (stupidly?) bought another and love it (well until it rapes my wallet)!
Mr Tidy said:
I was advised to change my thermostat when the water pump died on my N52, so I had it done!
OEM parts + labour at an independent the whole disaster only cost a little over £800!
So I sold the car (or is that money pit)!
It didn't last too long though, I (stupidly?) bought another and love it (well until it rapes my wallet)!
That's the ball park I've been advised for this - the pump itself from BM is over £400 plus vat! Hopefully once this is done I've only got to worry about coil packs and idrive units OEM parts + labour at an independent the whole disaster only cost a little over £800!
So I sold the car (or is that money pit)!
It didn't last too long though, I (stupidly?) bought another and love it (well until it rapes my wallet)!
bearman68 said:
Unbelievable isn't it, why on earth would you not fit a mechanical water pump?
Emissions apparently. Total BS though. They could have fitted a clutch to an existing mechanical pump surely. What is the net carbon footprint of the mechanical pump vs the electronic pump and all the components and engineering that went into that?
bmwmike said:
Emissions apparently. Total BS though. They could have fitted a clutch to an existing mechanical pump surely.
What is the net carbon footprint of the mechanical pump vs the electronic pump and all the components and engineering that went into that?
Or they could have gone fully electronic. Davis Craig have been knocking them out for years as have various American companies in the Hot Rod scene ; quite a few Muscle cars now feature electric pumps for a variety of reasons.What is the net carbon footprint of the mechanical pump vs the electronic pump and all the components and engineering that went into that?
Power is the other reason they went semi electric. Even back in the day an M54 could only churn out 230BHP while sticking to emissions. Sure, the S54 3.2 made 338BHP but it also came with its issues and was less refined and pricey to maintain. The N52/3 making 270BHP seems like a comfortable halfway house.
I'm not say a mechanical pump will kill loads of power but many crumbs do make a cake. Or in this case many minor changes do add up.
bearman68 said:
Unbelievable isn't it, why on earth would you not fit a mechanical water pump?
Just the same reason as to why it does not have points ignition and a carburetor.Technology moves on and it makes cars better. Compared to an E46 330 the car performs better, uses less fuel and emits less pollutants, despite being able to isolate the occupants better from the outside world, offering them more toys and protecting them better in a crash, all of which adds weight. It is all of the small things which help, and an electric water pump is on of those things which allows faster warm up and load dependant engine temperatures. This allows better emissions and more power.
If the starter had failed, would you be asking for a cranking handle?
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