warming up the car in cold
Letting the engine idle to warm up does much more harm than good. A cold engine is not a happy engine. The longer you sit there and idle the longer the engine runs in a cold state. This is one big reason why cars have thermostats. The thermostat allows the engine to warm up faster by delaying the use of the radiator. You should start your engine, let it idle for a short period (30 seconds is plenty), and then drive off. Don't accelerate hard and keep rpm low. Also, do not run your heater until the engine has warmed up. The heater core is basically an extra radiator, except the thermostat has no effect on it. Running your heater will prolong the time it takes for the engine to warm up.
Last edited by roast; Dec 18, 2006 at 11:59 AM.
Originally Posted by roast
Letting the engine idle to warm up does much more harm than good. A cold engine is not a happy engine. The longer you sit there and idle the longer the engine runs in a cold state. This is one big reason why cars have thermostats. The thermostat allows the engine to warm up faster by delaying the use of the radiator. You should start your engine, let it idle for a short period (30 seconds is plenty), and then drive off. Don't accelerate hard and keep rpms low. Also, do not run your heater until the engine has warmed up. The heater core is basically an extra radiator, except the thermostat has no effect on it. Running your heater will prolong the time it takes for the engine to warm up.
Originally Posted by davidv
I knew there were some sharp people out there who would agree with me. BTW the procedure that you described is exactly the opposite of cooling an overheated engine. Correct?
Exactly what i do, I noticed that by the time i pull away the temp needle is just above C on the thermostat. Oil pressure is about 40-60psi. Then I baby it for about a mile and all is well.
Originally Posted by jakedajewel
i wait until my rpm needle is idled below 1000 rpm. and i dont go over 3K rpm until my car is completely warmed up.
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