2001 F-150 Lariat Screw 5.4 4X4

How long should it take to warm up @ 25 degres F.outsige temp? Driving at about 35 mph.

billboats

 

most here would say don't even bother letting it warm up. The truck will warm up a lot faster going down the street then haveing it idle for 15 minutes before you actually drive it.

I used to warm the truck up in the cold, but found out its not needed from this site.

 

I usually just wait for the RPM's at idle to drop down, takes a minute or so. Not sure if there is any benefit to it or not, just always seemed like a good idea to do.

 

It'll vary between trucks and drivers, but I know that mine warms up in about 8-12 minutes in low speed driving (we only have low speed driving in atlanta in the morning and afternoons) and idleing conditions. But you have to consider things like condition of the coolant, effectiveness of hte thermostat, how well the whole system is flowing, etc.... Just expect it to be 7-20 minutes.

 

moutaineer02v8 & Christ

Thanks for reply, what I ment was driving it right away, how long before decent heat.

billboats

 

You should get heat in 5 to 10 minutes...

 

In 20-30 degree temps, it'll take about 5-7 miles for my '04 5.4 3V to warm up, for what that's worth.

 

For what it's worth, from a cold start in 20 degree weather, it takes roughly 2 miles of driving before I get any heat in my 5.4L. If I just let it sit in idle in the driveway, it takes about 6-7 minutes before I notice the defrost starting to work.

 

about 4 min for mine to reach normal operating temperature from 20F. not having the crank fan and turning OD off till ur engine warms up helps to. but i always let my trucks idle to drop down to about 900RPM before i put it in gear.

 

for me its 5 minutes or about 2 miles.

 

My truck in the wintertime doesn't get warm until I pull into my parking spot at school, it's about 2 miles, probably 5 - 7 mins. It doesn't really seem to matter whether or not I start it up a few mins early, it still doesn't get warm. I will only start it up if there is frost on the windshield, and that is only for less than 5 mins.

 

my 2000 lariat 5.4L takes about 3-4 miles before I have good heat.

 

Oh - in th eam I pull out of a semi heated garage which never gets below 45.

But coming home from work it takes abotu the same (but theres more traffic)

 

Remember to those that let it warm up before driving. Just because your engine is warm....your transmission isn't.

 

Just to be a nik-pik SOB, having a crank driven fan at cold startup makes no difference in warm up time... The engines T'stat will stay closed until it reaches around 150 before it even begins to think about opening.... Oh, and those that think they are at 'full operating' temp after 5 minutes or whatever because the stock gauge says so, think again..... At that point, you are only about 150*....

Other things to remember when starting out in very cold weather is that the rear end is cold, suspension and steering parts are cold, trans is cold..... Todays engines with electronic FI and such don't need the warm up time that old carborated engines need. Basically, start up, let the idle settle (about a minute) and you are ready to go.

Just take it easy for the first mile or so... Let the other fluids get moving and you should be ok...

Mitch