I have brand new Toyota Scion, automatic transmission. In the manual it specifically says that the engine should warm up while driving not idling. And my hubby has also brand new Toyota Yaris but shift stick and his manual says he does need to warm up a little before he starts driving. It sounds logical cause if you drive with engine cold it makes it work harder and eventually contributes to shorter life. So why my car is different? Input is very appreciated.
2007-02-19 06:21:25 · 8 answers · asked by D.J. 5 in Cars & Transportation ➔ Maintenance & Repairs
Warming the car up is for the human driving it. An engine runs and warms up better if it ns not allowed to sit and idle. In the cold this can create deposits on injectors and internal parts. It also is conducive (big word) to allowing moisture to build up in the crankcase.
I am not saying jump in slam it into reverse and tear off. Start it runn it for a minute or two and off you go.
A manual transmission hates to shift when cold and some are worse thatn others. So it needs to be warmed and oil flowing which it will when the clutch is engaged when you start the truck.
2007-02-19 06:29:52 · answer #1 · answered by Uncle Red 6 · 1⤊ 1⤋
There is a variety of reasons for this. I suspect the main driving forces behind the recommendation has more to do with the EPA, pressures from environmentalists, and a desire to keep the actual fuel economy specs in line with the claims. I don't care who makes the car, truck, motorcycle or lawn mower. Every engine needs to warm up a little so the normal expansion of moving parts takes place and the oil is flowing smoothly. You are correct is assuming the engine is working harder when it's cold and will contribute to a shortened lifespan.
You didn't specifically say what your husband's Yaris warm up period is. What is "a little"? 2 minutes? 30 Seconds? Not enough info. I'd say as long as it is down off of high idle it's probably warmed up enough.
Me personally, I just start my truck every morning, even on mornings like we've had around here with temps between 0 and +10 degrees F and drive away as soon as it comes off of high idle. But I do drive with a very light foot and don't put the hammer down until the temperature gauge has reached normal operating temperature.
Sometimes, I need to warm up my truck for a good 15 or more minutes because every piece of glass is covered with ice and I need to clear it all off and get the windshield clear before it's even safe to drive it off. True, it wastes gasoline, but what choice is there?
2007-02-19 06:36:22 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Different car manufacturers give different recommendations, because they engineer their cars differently. Your Scion probably has fuel injection, so performance isn't really affected by engine temp, as the computer adjusts for it.
Heck, your husbands car probably does too! But the manufacturer seems to think idling to warm the engine makes sense. Personally, on real cold days I would recommend idling for about a minute. This will ensure that oil is getting to ALL critical points in the engine, reducing the chance of wear...
2007-02-19 06:31:09 · answer #3 · answered by Michael B 6 · 0⤊ 0⤋
Every car I've ever owned recommended a warm up before running. I have to admit that I don't always do it but you'll get longer and more trouble free life out your engine and drive train if you follow that advice.
2007-02-19 06:31:46 · answer #4 · answered by Ernie 4 · 0⤊ 1⤋
I have only rebuilt 4 motors from autos and about 8 from various motorcycles.
You can believe me when I tell you that you should warm your car for five minutes before you drive it in cold weather.
You can do a couple minutes in the summer.
2007-02-19 06:28:11 · answer #5 · answered by Anonymous · 1⤊ 1⤋
this is not any longer needed usually to try this on modern autos, yet confirm to take it relatively common and shop RPMs low till the engine warms up. driving around will additionally deliver the the remainder of the mechanical factors as much as temperature (like the transmission and tires) at a lifelike fee.
2016-10-02 09:49:27 · answer #6 · answered by ? 4 · 0⤊ 0⤋
listen I've been turnin wrenches for way to long for operators who dont care .Its your car take care of it .give it time to warm it needs it for more then one reson .First to get the oil running and at proper vescosity second to ensure a sharp change of temp doesnt accure that may crack or damage your block .I have a million resons why you should give it the extra five or so to warm up but only one not to its probably under warrenty .
2007-02-19 06:39:46 · answer #7 · answered by lee c 1 · 0⤊ 0⤋
LOL,dont over analyze it.In the winter it is perfectly safe to let your vehicle warm up 5 to 10 mins and no worries of it affecting anything.
2007-02-19 06:43:19 · answer #8 · answered by Anonymous · 0⤊ 0⤋