warming up/cooling down
- Thread starter cameroon95
- Start date
billybob
Untrusted Seller
sorry fellas i was always told to let the car warm up before driving just had a few reads on the net about it ,heres something i found
Although you might think it’s easier on your car to let it sit and gently warm up, doing so is a bad idea for a number of reasons. Most importantly, it does indeed waste gas.
The vast majority of cars on the road today use electronic fuel injection. When your car’s engine is cold, the computer tells the fuel injectors to stay open longer, allowing more fuel into the engine to help it run cold. As the engine warms up, the injectors let in less fuel and everything returns to normal, so to speak.
The problem is, letting your car sit and idle is the slowest way to bring it up to operating temperature because it’s generally sitting in your drive at just above idle speed. And this method to warm up also invites other problems. Remember that modern cars are equipped with a multitude of devices to help them run clean, including a catalytic converter (sometimes three of them), a device in the exhaust system that works to burn off unburned hydrocarbons in the exhaust stream. A cold engine emits a far higher percentage of unburned hydrocarbons than a warm engine. Unfortunately, the average catalytic converter can’t process 100 percent of unburned hydrocarbons even in the best of times. Importantly, the catalytic converter needs high exhaust temperatures to work properly. Throw in a cold engine emitting a high percentage of unburned hydrocarbons, repeat several hundred times, and you can end up with what’s called a “plugged” converter. In a nutshell, the converter becomes overwhelmed and literally ceases to function. This won’t happen all at once but over time, the end effect is the same: poor mileage and significantly dirtier exhaust
Although you might think it’s easier on your car to let it sit and gently warm up, doing so is a bad idea for a number of reasons. Most importantly, it does indeed waste gas.
The vast majority of cars on the road today use electronic fuel injection. When your car’s engine is cold, the computer tells the fuel injectors to stay open longer, allowing more fuel into the engine to help it run cold. As the engine warms up, the injectors let in less fuel and everything returns to normal, so to speak.
The problem is, letting your car sit and idle is the slowest way to bring it up to operating temperature because it’s generally sitting in your drive at just above idle speed. And this method to warm up also invites other problems. Remember that modern cars are equipped with a multitude of devices to help them run clean, including a catalytic converter (sometimes three of them), a device in the exhaust system that works to burn off unburned hydrocarbons in the exhaust stream. A cold engine emits a far higher percentage of unburned hydrocarbons than a warm engine. Unfortunately, the average catalytic converter can’t process 100 percent of unburned hydrocarbons even in the best of times. Importantly, the catalytic converter needs high exhaust temperatures to work properly. Throw in a cold engine emitting a high percentage of unburned hydrocarbons, repeat several hundred times, and you can end up with what’s called a “plugged” converter. In a nutshell, the converter becomes overwhelmed and literally ceases to function. This won’t happen all at once but over time, the end effect is the same: poor mileage and significantly dirtier exhaust
billybob
Untrusted Seller
heres somthing else to
The engine of an automobile, is like the heart in a human. it has to get pumping, when first started. how would you like to jump straight out of bed and run a five mile course, without warming up? same applies to an automobile's engine and i have proven it.
Each morning, i allow my police vehicle to warm for at least 10 minutes. this not only allows the inside heater to warm, but also allows the engines oil to circulate to reduce friction. i have had this routine for four years. other police vehicles have been started , in cold weather, without the advantage of warming the engine. these engines have had more mechanical problems, than mine.
In the long run, for fewer engine maintenance problems, allow your car engine to at least a five minute warm-up. it may cost a little more in gasoline now, but will save big bucks in the future.
Remember, your automobiles engine is your autos heart. take care of it and it will take care of you.
The engine of an automobile, is like the heart in a human. it has to get pumping, when first started. how would you like to jump straight out of bed and run a five mile course, without warming up? same applies to an automobile's engine and i have proven it.
Each morning, i allow my police vehicle to warm for at least 10 minutes. this not only allows the inside heater to warm, but also allows the engines oil to circulate to reduce friction. i have had this routine for four years. other police vehicles have been started , in cold weather, without the advantage of warming the engine. these engines have had more mechanical problems, than mine.
In the long run, for fewer engine maintenance problems, allow your car engine to at least a five minute warm-up. it may cost a little more in gasoline now, but will save big bucks in the future.
Remember, your automobiles engine is your autos heart. take care of it and it will take care of you.
The_Notorious_C_A_T
Lifer
I Just drive it sensibly until the oil gets up to temperature and let hte turbo timer deal with it once I have stopped driving. Generally take it easy in the last part of hte journey and hte turbo timer is set to auto so usually only has 10 seconds on idle unless a long journey.
munday
Member +
This statement is based on circumstantial evidence and not based in fact at all, just some guys opinion (which is wrong
)Bajanplaidman
Member +
Start it let it idle till the a/f sensor warms up to give a good reading. GIVE IT THE BEANS. IF you have an automatic hks timer just set it on auto and go about ur business. If its in the middle of the night start. Warm her up for a 2-3 mins drive slow for a lil distance and GIVE HER THE BEANS. CHOP some men and go back home and park it let it idle for a lil while and go sleep.
DAVID 96 GLANZA V
Member +
if i have the time i let it idle for 10mins then drive it easy for a mile or two!
if i dont i just dont go over 3000rpm for a 2miles or so!
and when knocking off i just set the turbo timer for 4mins
if i dont i just dont go over 3000rpm for a 2miles or so!
and when knocking off i just set the turbo timer for 4mins
Suspected_Psycho
Member +
Its true what people say, Start it Drive it below 3k, then when the temp is in the midranges, give it some boost if you wish..
On the slowdown - Just dont boost for the last 2-3 mins of the trip, people must have some restraint?
On the slowdown - Just dont boost for the last 2-3 mins of the trip, people must have some restraint?
starlet666
Member +
holy damn so many different opinions.....
i have never let a car idle up or cool down.... i have a turbo timer for when im racing it only......other than that i get in start it drive to work turn off....
no need to "cool down" as the turbo isnt even doing anything at cruze unless it is a diesel..... in saying that.....
i drive a 1000hp diesel 6days out of 7 big turbo cummins 6cyl
it doesnt get warmed up and doesnt get idled down either..... it pulls huge loads all the time and has lasted so far over 1 million hours and hasnt had any issues..... so cant b to bad not letting it idle..... other motors the same have had problems from idle time cause it causes piston slap to the max.... and trust me with a 15 litre 6 cyl diesel u hear piston slap and it sounds bad....
i have never let a car idle up or cool down.... i have a turbo timer for when im racing it only......other than that i get in start it drive to work turn off....
no need to "cool down" as the turbo isnt even doing anything at cruze unless it is a diesel..... in saying that.....
i drive a 1000hp diesel 6days out of 7 big turbo cummins 6cyl
it doesnt get warmed up and doesnt get idled down either..... it pulls huge loads all the time and has lasted so far over 1 million hours and hasnt had any issues..... so cant b to bad not letting it idle..... other motors the same have had problems from idle time cause it causes piston slap to the max.... and trust me with a 15 litre 6 cyl diesel u hear piston slap and it sounds bad....