Quote:
Originally Posted by javadog
Factory timer? Runs for 10 to 30 seconds? Don't think so...
|
I stand corrected - as I don't have one myself and heard folks complaining about the car running on (and wasn't dieseling), figured it was longer - comparable to the shorter periods on the aftermarket devices.
Just out of interest/comparison, the 944 turbo (951) has a factory-fitted separate electric pump that continues to pump coolant through the water jacket after the ignition is off to ensure bearing temps are below 340 degrees. For as long as it takes...
Quote:
|
Having owned a couple 930's for the last 25 years, let me say that a turbo timer isn't needed. I have never has an issue with a turbo. I don't run the car hard for the last few miles when returning home, to cool the turbo down a little. Low load, lower rpms, nothing unusual.
|
Exactly. If this was a bad practice, I think I'd have killed a turbo by now in 30,000 miles.
Quote:
|
The delay in the engine cutting off is this; the fuel pumps are cut off when you turn the key and the ignition is left on for a couple seconds, to ensure any fuel remaining in the engine, as it winds down, gets combusted.
|
Interesting. Might have to look at adding that.