[werd]

I'm running a ScanGauge II on my '08 E90, and after watching temps fluctuate a bit tonight (202 - 224F in air temps ranging from 85 - 91F, and the 224F max reached in 85F air temp) I am curious to see what others are witnessing.

These temps seem a bit high, but this is also the first E90 & six cylinder I've owned for street use - so those temps could be perfectly fine... However, I want to see what others report in to make sure I'm not heading towards a water pump failure.

Car just turned 65K, running fine.

[Rick328]

Our cars got an electric water pump that is use to modify the temperature based on engine use. On my N52 when cruising, temp is around 100-105C (Canadian car with metric units) for better gas mileage. When pushing it more on spirited drives, engine temp is lowered to around 90-95C to avoid overheating risk. German engineering

[PureTorque]

I just picked up this 335I and I'm not used to the way these cars warm up and staying at operating temp. I have a few questions myself.

1. Warmup takes a long time (compared to my E85 Z4). Approx 15-20min of driving to reach about 200 f.

2. When reaching 250 f sometimes i can drop a few ticks below 250 and reached 1 tick after 250. Is this normal?

3. Never went way beyond 250 f.

2007 335I 94k mi.

Don't think the water pump/ t-stat has been replaced or cooling system been serviced.

[Delta0311]

Originally Posted by PureTorque

I just picked up this 335I and I'm not used to the way these cars warm up and staying at operating temp. I have a few questions myself.

1. Warmup takes a long time (compared to my E85 Z4). Approx 15-20min of driving to reach about 200 f.

2. When reaching 250 f sometimes i can drop a few ticks below 250 and reached 1 tick after 250. Is this normal?

3. Never went way beyond 250 f.

2007 335I 94k mi.

Don't think the water pump/ t-stat has been replaced or cooling system been serviced.

You should definitely do a coolant flush then. You will know when your water pump is about to fail because your radiator fan will start running like a plane getting ready to take off. Your temps are normal. Normal range is between 220 and 250F.

[PureTorque]

Originally Posted by Delta0311

You should definitely do a coolant flush then. You will know when your water pump is about to fail because your radiator fan will start running like a plane getting ready to take off. Your temps are normal. Normal range is between 220 and 250F.

Thanks for the reply.

How long does it usually take for the warmup to happen?

When i warmup my cars i usually start it and let it idle for at least 5mins before driving. Ambient temps are usually around 77 f.

Is the water pump warranty covered as long as the hpfp?

[Delta0311]

Originally Posted by PureTorque

Thanks for the reply.

How long does it usually take for the warmup to happen?

When i warmup my cars i usually start it and let it idle for at least 5mins before driving. Ambient temps are usually around 77 f.

Is the water pump warranty covered as long as the hpfp?

DON'T DO THAT....
Just turn on on car, wait a few seconds (3-5 sec) for the initial RPM surge to drop and DRIVE moderately. Let the car warm up as you drive, warming up while idling is not good for the car further more it DOES NOT warm up the transmission.

Water pump is only covered under initial and CPO warranty.

[PureTorque]

Originally Posted by Delta0311

DON'T DO THAT....
Just turn on on car, wait a few seconds (3-5 sec) for the initial RPM surge to drop and DRIVE moderately. Let the car warm up as you drive, warming up while idling is not good for the car further more it DOES NOT warm up the transmission.

Water pump is only covered under initial and CPO warranty.

Really. Ok not used to that, only problem is that right when I drive off i hit freeway speeds after 1 min of driving. Is that ok?

Would you mind giving me a quick run down as to why you shouldn't let it warm up that way I did it? I'm used to doing this.

Is there a idle cool down period as well? I'm used to turbo'd cars needing 1 min or so to cool down with engine idleing.

[Delta0311]

Originally Posted by PureTorque

Really. Ok not used to that, only problem is that right when I drive off i hit freeway speeds after 1 min of driving. Is that ok?

Would you mind giving me a quick run down as to why you shouldn't let it warm up that way I did it? I'm used to doing this.

Is there a idle cool down period as well? I'm used to turbo'd cars needing 1 min or so to cool down with engine idleing.

http://www.hillmuth.com/blog/is-it-r...n-the-morning/

http://www.businessinsider.com/do-yo...-winter-2015-2

Your car does not have a carburetor so the only thing you are doing is wasting gas. Start the car and drive. Just don't go flooring it till the engine warms up. Go gentle on the gas and let the car shift on it's own (if auto) at like 3k to 3.5k RPM.

As far as cool down goes. Again just drive moderately the last few miles. The water pump continues cooling the turbos when the car is shut off.

This is a car designed to be driven, not kept in a bubble.

[PureTorque]

Originally Posted by Delta0311

http://www.hillmuth.com/blog/is-it-r...n-the-morning/

http://www.businessinsider.com/do-yo...-winter-2015-2

Your car does not have a carburetor so the only thing you are doing is wasting gas. Start the car and drive. Just don't go flooring it till the engine warms up. Go gentle on the gas and let the car shift on it's own (if auto) at like 3k to 3.5k RPM.

As far as cool down goes. Again just drive moderately the last few miles. The water pump continues cooling the turbos when the car is shut off.

This is a car designed to be driven, not kept in a bubble.

Thanks for the info!