Quote:
Originally Posted by stlcity
Quick q for u guys: this will probably sound stupid: After I turn off the truck for a while it seems that the heater/AC continues to run? there is a continous hum from the hood for atleast 5 mins? Is this normal? Thanks.
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I have no idea on this. I wonder maybe, since it's a turbocharged engine, it's taking it's time to let the turbos "cool off".
In my earlier days, when I had a sporty turboed car, when I stopped, I'd let the engine run for 30secs to a minute.
Shut Down
Before shutting your engine down, let the turbocharger cool down. When an engine runs at maximum power/high torque, the turbocharger is operating at very high temperatures and speeds. Hot shut down can cause reduced service life which is avoidable by a minute or two of idling. Most mobile equipment applications include an adequate cooling period during parking or mooring procedures.
Above quote from:
Turbosafe Industry News - What others say about turbocharger failures caused by hot shutdowns & oil lag.