BMW turbos get their oil and coolant supply from the engine block through dedicated lines. Cooling demands are managed by the engine computer which will continue pumping coolant through the block and turbos even if the engine is off.
Table of Contents
How do I cool down my turbo?
Drive your car gently for the last minute or two of the drive, or let the car idle afterwards for at least 60 seconds. By letting it run. the oil will continue to circulate and cool down the turbo.
How do I cool down my BMW engine?

Are BMW turbos water cooled?
Modern turbo’s are water cooled, in the good old days they used to be oil cooled, and shaft coking was an issue. No cooling down require unless on track.
What causes turbo to run hot?
Causes of overheating: Hot shut down. DPF issues, such as regeneration, resulting in increased exhaust gas pressure and temperatures which leads to overheating of the turbine side of the turbocharger. Remapping, chipping or over-fueling.
How long does a BMW engine take to cool down?
Keep in mind, it takes about 30 minutes for overheated engines to cool down enough so you can inspect what’s going on under the hood.
How long does a turbo take to cool down?
Idling the engine cools the turbo because it circulates the oil, yet does not make the turbo “work.” The amount of cooling it needs is directly related to the way you just finished driving it. When you drive it gently around town, 15 seconds should be more than adequate.
Do you need to let turbos cool down?
Turbocharged engines do need to cool down before they are turned off. But in nearly all driving conditions, the engine does not reach temperatures that require a deliberate cooling down period.
When should I let my turbo cool down?
It’s always a good idea to let a turbo charged vehicle idle for at least a couple minutes before shutting off the engine to allow the turbo to cool and keep it from siezing. This is a very expensive repair if you don’t.
Why do BMW engines run hot?
BMW engine overheating issues are a common complaint among many BMW owners. Some of the main causes of overheating in BMWs include coolant leaks, a clogged coolant system, water pump failure, and using the wrong type of coolant.
Why is my BMW engine so hot?
The four most common reasons for high engine temperatures include low coolant levels, pockets of air in the cooling system, cooling fan malfunction, or debris in the radiator.
What is the fastest way to cool down a car engine?
Put your car in neutral or park and then rev the engine. This makes the fan and the water pump work faster, which pulls more air and more water through your car’s radiator. This increased circulation cools down the engine. Pull over and open the hood.
Does coolant run through turbo?
During normal engine operation coolant flows through the turbocharger via the mechanical water pump. However, thermal siphoning can pull some coolant through the turbo’s centre housing or it can be pumped through properly routed coolant lines.
How long does it take for n54 to cool down?
it takes it around 6-7 hours for it to completely cool down from operating temp.
When did BMW start using electric water pump?
Electric pumps do have a place on street-driven cars, in fact BMW began using electric water pumps around 2007 and several other manufacturers are working on similar versions.
How do I stop my turbo from overheating?
Protecting your turbo from excessive temperature damage Drive carefully โ let your engine warm up before pushing it too hard, and let your turbo ‘spool down and cool down’ for 5-10 seconds before switching off your engine after every journey.
What happens if turbo gets too hot?
“Heat soak” from the turbine side of the turbocharger through to the compressor side, causing discolouration to the turbine shaft and bearing housing. Discolouration of internal components including thrust washer and flinger; occasionally without evidence of wear. Collapse (loss of tension) to turbine end piston ring.
Should a turbo be hot?
As exhaust gas temperature reduces, the velocity reduces due to a lack of pressure, which reduces the rate of the turbocharger spooling up. So, as a rule of thumb, you want to keep your turbocharger in a warm area of the engine bay.
Why is my 2007 BMW 328i overheating?
The most common reasons a BMW 328i is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat.
How do I cool down my engine?
- Turn on the heater. It sounds counterintuitive, but Reina recommends turning on the heater.
- Sit tight. If you don’t have roadside assistance, be patient; it will take at least 15 minutes for the engine to cool.
- Add coolant.
- Drive to a service station.
What to do if engine is overheating?
- Kill the A/C and crank the heat.
- Find a safe place to pull over.
- Check and add coolant (if you have it).
- Restart the engine.
- Don’t panic.
- Don’t keep driving.
- Don’t open the hood immediately.
- Don’t let the issue linger.
What happens if you don’t let turbo cool down?
“The number one cause of turbo failure is oil “coking”. Oil “coking” occurs when a turbocharger is not properly cooled down and the oil that normally lubricates the center cartridge heats up and forms solidified oil deposits.” That burnt oil eventually goes on to block passages.
What should you not do with a turbo engine?
- Don’t Run Your Car Immediately. Firstly, don’t run your vehicle straight away after you turn it on.
- Don’t Switch Off Immediately.
- Don’t Lug Your Engine.
- Octane Fuel – Don’t Use Lower Than Recomended.
- If You Have A Laggy Turbo – Don’t Mash The Throttle.
Does hot weather affect turbo cars?
For most people, the drop in turbocharger performance during hot weather won’t be a problem. On most modern turbocharged vehicles, the drop in performance is relatively insignificant, thanks to improvements in the air intake, intercooler and air filtration technology.
At what speed does turbo kick in?
In order to achieve this boost, the turbocharger uses the exhaust flow from the engine to spin a turbine, which in turn spins an air pump. The turbine in the turbocharger usually spins at speeds between 80,000 and 200,000 rotations per minute (rpm) โ that’s up to 30 times faster than most car engines can go.