I think many new cars run extra rich when cold. I think extra (unburned) fuel burns in the catalyst and heats the catalyst to operating temperature sooner. The rich mixture can deposit carbon or wash oil off the cylinder walls. The sooner the engine warms up the sooner the mixture is leaned out.
Engine Warm Up Time does it matter?
- Thread starter Chimay
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Shouldn't Canadians with modern fuel-injected automatic-transmission-equipped vehicles be more concerned about transmission warmup than engine warmup?
I mean, the only good way of warming up an automatic transmission is to actually drive the thing. Sitting stationary, in Park or Neutral imparts little to no heat to an automatic transmission, and as a result, they tend to run like garbage in the cold, and probably represent substantial parasitic losses as well.
And after all, the reason why one might consider 'warming up' a car is for engine longevity. However, pretty much any modern engine will outlive the life of the automatic transmission it is attached to, so why not focus more on the transmission in terms of warm-up and pre-heat efforts?
I mean, the only good way of warming up an automatic transmission is to actually drive the thing. Sitting stationary, in Park or Neutral imparts little to no heat to an automatic transmission, and as a result, they tend to run like garbage in the cold, and probably represent substantial parasitic losses as well.
And after all, the reason why one might consider 'warming up' a car is for engine longevity. However, pretty much any modern engine will outlive the life of the automatic transmission it is attached to, so why not focus more on the transmission in terms of warm-up and pre-heat efforts?
Hmmmmmmmmmm........
While the engine warms how about putting the auto transmission in drive???? Keep the brake applied and let the engine and transmission warm up?
Would that work?
I realize that, perhaps, doing it for too long can be bad but, would a few minutes harm anything? Would that few minutes cause even a wee bit of hit to be produced in the transmission fluid and the components it has contact with????
While the engine warms how about putting the auto transmission in drive???? Keep the brake applied and let the engine and transmission warm up?
Would that work?
I realize that, perhaps, doing it for too long can be bad but, would a few minutes harm anything? Would that few minutes cause even a wee bit of hit to be produced in the transmission fluid and the components it has contact with????
quote:
Originally posted by Chimay:
I have been to Belgium twice just for the beer.
that's quite a beer run!
i always open the passenger door, start the car, throw my stuff (thermos, water bottle, bag, books, etc.) in the passenger seat, plug in my cell phone, then walk around to the car and get in. by the time i'm done making the proper "adjustments," i feel perfectly comfortable pulling out onto the highway.
of course, when you are sure in the knowledge that the car will be destroyed by a deer, telephone pole, michigan ditch, or a cellphone yacking ******* in an suv, why worry about it?
My V6 Ford Contour warms up pretty quickly, it has an aluminum block.
Since this thread my warm up time has reduced as well. Especially the discussions about driving easy, better mileage etc... For a diesel engine that's different. you can let them idle for a 1/2 hour and still won't be fully warmed up in the winter.
Anyway, I used to let my truck idle for about 30 seconds before taking off. Now I usually let it chill out for about 10-15 seconds, then drive easy around the neighborhood a time or 2, and proceed to drive as normal. I remember when I would let my truck idle for about 5-7 mins before taking off, that really killed my mileage!
AR
Anyway, I used to let my truck idle for about 30 seconds before taking off. Now I usually let it chill out for about 10-15 seconds, then drive easy around the neighborhood a time or 2, and proceed to drive as normal. I remember when I would let my truck idle for about 5-7 mins before taking off, that really killed my mileage!
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