10-28-2015, 08:22 AM | #45 | |
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Turbos in OEM roles are all water cooled in recent time. |
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11-03-2015, 09:03 PM | #46 |
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I would like to start my car in the morning and drive off but it stalls if I due that or it runs like a tolilet for the first 20 30 secs.. don't know why, It just does.
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10-14-2016, 12:59 PM | #47 |
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Mine happens on reverse. if I start the car and backup immediately then cars almost feels like it loses power and shakes a bit. this happens on cold temperature ~60F. Took it to dealership and they said I have to let it idle for 1min then reverse. If I do this then I don't have the problem. Wondering why other cars I've driven doesn't do this but oh well, I just let it idle in the garage for a minute before driving.
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10-15-2016, 02:45 AM | #48 |
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I use a Hair Dryer.
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10-19-2016, 11:41 AM | #49 |
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For my 340i, i turn it on, drive it out of my garage immediately so i dont get fumes stuck in it when i leave. Go inside take a leak and get whatever it is i always forget than go drive normal under 3k until oil temp warms up
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10-23-2016, 08:05 PM | #50 |
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I wait until the RPMs drop under 1k and then I drive off.
I don't dog it until I'm around normal temperature. Then again, I live in D.C. so I don't really get the chance to open her up often unless I'm trying to get in front of someone lol |
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12-09-2016, 05:31 PM | #52 |
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just drive off. quickest and least damaging way to warm it up.
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12-10-2016, 02:00 PM | #53 |
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I usually let it idle for a few seconds till the revs drop and then drive gently until warmed up.. I think it might be good to let the pistons, cylinders and head to warm up a little before putting the engine under load.. Just my thoughts..
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03-18-2017, 10:42 AM | #54 | |
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Consequently, below -9F/-22C, I do leave it min 5-10 min and I always achieve power status by the time I hit the highway, and the battery may begin charging at some point- opening the ski trap, warm air makes it to the battery. Although BMW staff told me that these cars need 30+ miles to begin charging, I found out that, besides regular trickle charging, hot air in the trunk is important. Below -10F the car would barely warm up even with 10 min driving. As soon as temperature or engine warm up, I do rip it and get rid of carbon build up. In Ottawa they have an unusual amount of service calls for M3/4 power drop in winter, caused exclusively by carbon buildup due to short work distances, no engine effort, and fuel auto choke. However, if I was parked in a garage, I would, indeed, just start and go. |
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03-22-2017, 12:58 AM | #55 | |
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My 135 however took forever! |
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03-22-2017, 11:22 AM | #56 |
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In our heated garage, I start car and drive off slowly. The diesel like clickety-clack noise that reverberates in the garage drives me nuts.
I might idle the car for a 20-30 seconds if it is parked outside in the dead of winter before driving away slowly. Don't like the car running super rich and not moving. |
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03-22-2017, 12:21 PM | #57 | |
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isnt idling a modern turbo engine before you shut it off to cool down not necessary anymore? I think the best thing to do would be to crank up your heater for the last 5 min of your drive. this lowers coolant temps by a considerable amount, and since your waterpump circulates coolant around your engine for some time after you turn off the engine, your turbos will be cooled without needing to idle once you get to your destination. |
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03-22-2017, 12:22 PM | #58 |
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nothing is going to be warmed up from a few seconds, or even a few minutes of idling. like someone else said earlier, the quickest and most effective way to warm up your car as soon as possible is by driving off right away.
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03-22-2017, 01:00 PM | #59 |
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This is the first car I have ever done this with (thanks to the advice here) and haven't looked back once. Gas mileage has improved a lot more than I thought plus I no longer find the need to have a remote starter. Win win here
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03-22-2017, 01:03 PM | #60 |
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agreed. your car uses tons of fuel on a cold start just to stay idling because it is so inefficient when cold.
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03-22-2017, 01:03 PM | #61 |
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I warm it up in sport mode as it revs higher in sport+. If people are being dicks on the road I'll launch in sport+ than switch back to sport to prevent revving too much until its warmed up.
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03-22-2017, 01:13 PM | #62 |
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I don't hear the exhaust valve close but the exhaust note gets quieter once the engine idle speed drops below 800. I usually drive off at this time so like 10-15 seconds. Is this what you're referring to or you mean the valvetronic? I do notice a valve like sound sometimes if the window is open a few seconds after startup.
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03-22-2017, 01:33 PM | #63 | |
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If you only get minimal spells of -20C then go ahead and drive off. If you get average temperatures of -20C+ then I would let it idle for about a minute of two until your car gets to normal idle. Oil is extremely thick when it's cold outside (JB4 read 15C for oil, water temps, and about 20ish for transmission.) I once drove off right away in the morning when it was -25C all night and morning, and the car was VERY sluggish. I stopped doing so and let it warm up until normal idle rev (6-700RPM) and drove off and it was fine.
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03-22-2017, 01:54 PM | #64 |
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yeah extreme climates definitely make a difference.
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03-22-2017, 02:07 PM | #65 |
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It's amazing how fast it warms up, including the seats and wheel. If I attempted this with my Caddies, I'd freeze half the trip. Difference is literally night and day but I'm not surprised since this is German engineered
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03-23-2017, 12:59 PM | #66 | |
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Idling when the car runs rich is terrible. |
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