Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [cooling]

91 questions
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Can salt water be used in place of antifreeze?

The key feature of antifreeze--as the name implies--is that it doesn't freeze. When I was a kid, my Dad used to use just plain water in the radiator of his 1967 Oldsmobile Cutlass during the summer. It worked ok. He'd only use antifreeze in…
kmiklas
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50/50 Coolant Dilution after distilled water flush?

I have a new (to me) car that it appears hasn't had a coolant fluid change ever, now with 120k miles. It is an 04 Corolla. I am planning on flushing the system with distilled water a few times. But it seems to me that if I add a 50/50 mix of fluid…
Nertskull
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Do you really need to cool down your turbo after hard driving?

Vehicle: 2012 Subaru Sti I have been driving turbocharged cars for a while now and I have blatantly accepted that before shutting down you must let your car idle for a few minutes after driving hard to allow the turbo to cool down. This process will…
tqrecords
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Using sunshine to cool down the car

Why can't the sunshine (that turns a car into an oven) be used to run the aircon? Or at the very least, a fan? For example - a long thin fan that fits into the top of the window - preventing it from closing all the way. Surely a solar panel the…
Danny Schoemann
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Was sent radiator for automatic rather than manual. Can I simply connect the two unneeded outlets with a piece of radiator hose?

Radiators for the automatic version of my car have a couple of extra coolant outlets at the bottom for cooling the auto transmission. I was sent the wrong radiator and I don't need these in my manual car. Would there be anything wrong with just…
MeltingDog
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Yellow foam in my oil cap

I was checking the level of oil in my car and I've found some yellow foam in the oil cap, the car has 120000 Kilometers and 12 years; the head gasket is the original, what could it be? Do i need to replace the head gasket?
Max Scoch
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2010 TDI Jetta Strange A/C Pressure Readings

I recently replaced the compressor and dryer at the suggestion of a nearby shop. I've charged the system and the high side reads a solid 100psi the low side cycles between 70 - 110. Cycle time is about 2-3 seconds. As some of you may know this car…
user16873
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2 answers

Thermostatic Cooling Fans

Most cars these days have a cooling fan that only runs when needed.The advantages in fuel economy ,warmup time ,pollution,HP are well documented elsewhere.The popular methods are the electric fan and the viscous coupled fan.The basic idea is that…
Autistic
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Why is antifreeze mixture not as stated?

To keep things short I poured 200ml of concentrated genuine ford super plus premium antifreeze (Ethylene glycol based) within a bowl. Then added 200ml of water to dilute the solution to a 50/50 mixture. It states on the bottle when mixed 50/50 with…
ceefax12
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what in the thermostat opens when it reaches a certain temperature?

what actually opens when it reaches the certain temperature, is it the spring or is it the copper, or does the heat of the engine make the spring softer allowing it to come up and let coolant start circulating?
Caden Green
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1992 Honda Accord overheating issues

Before I dive into a water pump replacement - how would I test it? I have replaced the thermostat, hoses and radiator - all of which needed it. Now the car will go to red (hot) intermittently, and will stay normal at idle, or a little above half at…
Wayne Larson
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AC Cooling stops at high speed

My car ac works very fine in normal conditions. But when I drive it for awhile longer, and often at high speed, it stops cooling. I can still hear the fan sound loud and clear but air flow decreases a lot even at full speed of blower. My car is…
msj003
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Problem with Temperature rising after 30 minutes of driving?

I have a Mitsubishi Galant 2003, 2.4L engine with 234k miles on it. When I drive it the temperature gauge gets up to exactly midway, until exactly 30 minutes. Then it goes up to about 2/3 or 3/4 of the way up and then fluctuates between that point…
James-Jesse Drinkard
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4
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Is it bad to immediately crank the air conditioning all the way up when you start your car on a really hot day?

There have been times in the summer when my car is in my driveway all day in 100-degree weather, and combined with the sun, it must be 140+ degrees in my car. Can it damage or shorten the life of my car’s air conditioning to immediately crank the…
Josh Withee
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Is there any advantage to aftermarket hoods with heat extractors, or are the extractors purely aesthetic?

Many aftermarket hoods, especially for sports cars, make use of large cowls, ram air vents, and most commonly heat extractors on the sides of the hood. I'm a techie and we're always spending insane amounts of money to improve our computer cooling…
Nicholas
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