How long do you Idle?

Same here, if I can see out the windshield, I go.

 

It shouldn't be a problem when the engine is fully warmed up because it runs in closed loop and makes adjustments to the air fuel ratio.

 

I live in Az...it's always warm.

 

My TDI diesel flat would not warm up idling once it was working it was fine the only thing that got warm was my back side from the heated seats and if I stopped once it was warm and idled the temp would go down! Idling gets you zero MPG and still burns fuel.

 

sometimes im moving while starting.... as little time as I can between starting and moving.

 

Ditto.

Just long enough for it to idle down (1st step).

 

So many head gaskets to be replaced

 

"with modern cars, all you're doing with a long warm-up is
wasting gas, increasing pollution, raising the temperature of the
planet and making yourself 10 minutes late for your chiropractic
appointment. The proper procedure is to start the car. If it starts
and keeps running, put it in Drive and go."-Ray Magliozzi from Cartalk

 

About 30 secs for me, unless its frosted up, or covered in snow.

Chris 4x4 should get in on this. I remember him talking about this in another thread, and IIRC he said it was better to drive it to warm it up, rather than idle. I have always heard the same, and have lived by that with no issues in an vehicle I have owned. I just don't push it, till I feel heat.

 

"On older, carbureted cars, that kind of extended warm-up can
actually cause damage to the engine by diluting the oil with excess
fuel. So it's even worse if you have a really old heap."-Tom Magliozzi Cartalk

 

Right, that guy never had scanguage before. When truck idles engine gets about 0.4 GPH. when you accelerate even slowly fuel usage jumps to 4-5 GPH. I donts see how its better. Also when its -14F outside even when engine gets to 32 F after a minute or so this is only parts where coolant flows through. Everything attached to it is still -14F. Bottom line Computer knows when engine is ready thats why RPM drops. No driving until RPMs do go back to 1000.

 

Immediately throw it into reverse depending which way I'm facing. I don't believe in warming up chit... lol

 

I've noticed that the 2gen's warm up faster if you drive them, as opposed letting them idle, but after that I'll let it idle all afternoon if it keeps my dog from freezing or getting too hot, its just burning fuel idling, doesn't have any effect on oil unless you have way serious problems with the rings, [an if your getting gas in your oil its more serious than just idling]; a motor is just an air pump, air/fuel in exhaust out, doesn't matter what rpm its turning

 

Do you have a scangauge? Check again at -14F

I measured these years ago at idle with 2.7L. I haven't checked at -14F but it may be 3-4 gph.

engine
temp GPH
25F -- 1.9
45 -- 1.3
65 -- 1.1
85 -- .9
125 - .6
145 - .5
165 - .3
193 - .3

 

It gets hotter faster because it's an all aluminum block. Aluminum absorbs a lot of heat faster and since you are revving it to a higher RPM then idle you will heat up the engine faster.

 

1-2mins.

 

Depends on how cold it is. But normally, as soon as the high idle down-revs to normal idle is when I take off. Always liked letting my oil get up and circulate through the valves and head before taking off. On super cold mornings, I let it sit at least 5-10 minutes warming up, usually takes a good 5 minutes to scrape the frost off all the windows anyway.

 

There's no need to let the oil warm up. If you're getting fuel in your oil, something is terribly wrong with your truck

 

V6 at -14f dumps load of fuel even at idle. It makes no sense to drive immediately.
The only reason why we are told this is for EPA to be happy. It hurts engine if you drive cold. I would rather idle for extra minute then have engine wear tarted up with engine drinking oil.