Questions tagged [cooling-system]

System which removes excess heat from liquid cooled internal combustion engine. It also helps maintain the engine temperature at a consistent level. The cooling system encompasses the radiator, water pump, thermostat, hoses, heater core, overflow reservoir, and anti-freeze (or coolant).

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33 views

1967 f100 water not flowing through radiator

Water isn't flowing through radiator unless you press the gas pedal, acts like its running hot but temperature gauge never shows it going above normal . Thermostat is new and temperature sensor is new ...
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350 views

Vibrate with humming sound

I recently notice there is vibration with humming sound coming from my 2017 Nissan Pathfinder. When I start the car and leave it idle I don't hear any vibration with humming sound from front driver ...
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51 views

Faulty cooling system but not overheating

I've got a Peugeot 2.0L HDI 2003 over the past several months I've had issues with the cooling system, it hasn't overheated until recently but has had other issues. It first started showing signs ...
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1k views

How to remove the rear heater on an Econoline

So I'm currently in the process of gutting a 2005 E350 (a former wheelchair van with a raised roof) to turn it into a camper van. As part of this process, I went about removing the back heater. In ...
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Coolant fluid being consumed up fast (1.5 liters in just two to three days)

My friend owns a VW Golf Mk4 1.6 SR year 1998. Recently he is having issues with the coolant fluid being consumed up really fast, approximately 1.5 liters in just two to three days. The first thing ...
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126 views

Is it possible for air to flow too fast through the radiator? My engine runs hot at 75 mph but not a 60 mph

My vehicle is a '97 Jeep Cherokee XJ with the 4.0L straight-six. I'll try to keep this as short as possible, so I'll just ask that you please assume that there is nothing wrong with the cooling ...
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1answer
76 views

Resting a radiator on metal brackets

I have recently replaced the radiator in my 2006 Pontiac g6 GTP 3.9L. While installing the new unit I neglected to install the rubber feet between the rad and the frames lower bracket, which the rad ...
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1answer
628 views

Overheating 2009 Nissan Cube

I have a 2009 Nissan Cube. A few weeks ago the car overheated and I realized that it was out of coolant. I added coolant and a week later it overheated again. I realized that the Radiator was leaking ...
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What are some effects of higher than usual cooling system pressure?

This is a follow on to this question where I asked how A/C could be causing coolant loss. The answer was that using the A/C can cause higher than usual cooling system pressure, which could result in ...
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1answer
718 views

What happens with excess coolant after performing BMW electrical cooling system bleed?

I replaced a leaking hose on my BMW X3 2008 and attempted to bleed the cooling system according to these instructions. Do not open the coolant expansion tank cap during the venting procedure. ...
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109 views

Cooling system blockage in block or heads?

Hot water is entering the passenger side of the radiator, but no hot water is entering the inlet side of the radiator. I've replaced the radiator, water pump, and thermostat. The truck is a 1994 ...
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226 views

Will driving with less coolant cause any problems?

Let's say the capacity of the cooling system is 7 liters. Lets say you have 1 liter in there. Besides the fact that if you have a leak or it evaporates you will have less time, is there anything ...
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Why do you people run distilled water on cooling system and flush it, is it neccesary?

I'm trying to change coolant on my car. I saw a video of my car where they drained the existing coolant, added and ran distilled water, drained it and then finally added coolant. Why are they doing ...
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703 views

Why does my Honds Fit Sport overheat?

I have a 2007 Honda Fit Sport. The car has been overheating. I have taken it to all the good mechanics, yet the problem persists. When on a highway at speed up to 100 (kph?), the car starts to ...
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34 views

Why does my automobile air conditioning stink when I turn it on [duplicate]

I read all over that the problem is mildew or antifreeze, but why doesnt it stink when I'm just blowing fresh air and the compressor isn't on? Seems to me that if it's the air ducts, for lack of a ...
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80 views

Disconnected sensor harness and car is now leaking coolant. Related?

A mechanic replaced BMW X3 2008 cracked coolant reservoir. Car was running fine for several months. Recently "low coolant level" light came back on. I refilled it with more coolant. However, now it ...
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255 views

Sign of blown head gasket

I just replaced the water pump new and took out the thermostat because it was stuck closed and didn't have the 40 bucks for a new one yet. When I had the van engine running and normal temp between 185 ...
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512 views

No thermostat, but still running hot

Have a 2001 Mitsubishi eclipse. The thermostat was taken out but the car is still running hot. I've checked the coolant level and it's full. Don't know what else to do.
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107 views

Part no: coolant flange/elbow

I have an '04 1.2L 16v Renault Clio Dynamique with a leaking coolant flange/elbow where the lower coolant line connects to the water pump. You can see where flange is in relation to the pump and ...
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9k views

Consistently losing coolant, but no overheating

Hi I’m new on here and I could use some help. I have a 2006 Nissan Maxima and I can’t figure out what is up with my coolant system. To start I replaced my motor with a good used JDM but before ...
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1answer
604 views

Cooling fan comes/stays on when not needed

Car is a 2012 Mitsubishi Galant. Went to drive it one day and the battery was dead. Totally dead. Car fob wouldn't work, lights didn't come on, and turning the key didn't even make clicking sounds. ...
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1answer
4k views

Diagnosing a blown head gasket - can I use a compression gauge?

My '97 Jeep XJ Cherokee w/ 4.0L inline-6 engine runs a little hot and it overheats when driving on the highway for longer then an hour. The coolant temp slowly creeps up until it boils over. I've seen ...
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2answers
54 views

Can a year-old oil-in-coolant situation fix itself?

So a year ago I took my 2003 Buick Century Custom to get an oil change. The mechanic there told me he found oil in my cooling system and that I should start looking for a new car. I moved out of town ...
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5k views

Engine coolant hot, but oil temperature normal

This afternoon, I left my 2012 VW Beetle 2.0T idle for a few minutes at a gas station, and it showed a hot coolant temperature warning; the sensor was reading 195F. It was an unusually warm day for ...
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Leaking water hose 99 mazda 626

What hose is this? Leaking water 99 Mazda 626
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1answer
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Bubbles in radiator despite several cylinder head overhauls

I have a Nissan FB13 Supersaloon. The car started having radiator problems when the radiator was blocked. After repairing the radiator the engine started building pressure and you could see bubbles ...
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1answer
60 views

Does the coolant shorten the life of radiator? [duplicate]

My car is running on pure distilled water in its radiator. No winter here, so freezing the coolant wouldn't be a problem. It is running on pure water because I'm the 2nd owner and by the time I bought ...
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1answer
36 views

Throttling valve speed in a refrigeration cycle

I'm trying to understand the general refrigeration cycle which includes a throttling valve for the freon that is controlled by a stepper motor which is done by a temperature control. I was wondering ...
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135 views

oil in my cooling system liquid is my TURBO damaged

I have a kia forte 5 sx 2016 with about 31000 miles on it. Last week the 4 spark plugs broke. I've got them changed under my guarantee. I knew something was wrong but the dealer didn't want to look ...
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1answer
628 views

Should I open the radiator cap in extreme cold

I have a 1.6L petrol Peugeot 307 (2001) that normally is driven in the south of Sweden where temperatures are typically greater than -10 degrees Celsius, but am now in the north where temperatures can ...
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4answers
5k views

Oil vs Coolant Temperature

Could an engine be run dry, as is the case with solid blocks, meaning no coolant, if a sufficient oil cooler were to be installed? Essentially, if we could keep the oil temperature between 210 and ...
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56 views

I have a broken impeller on a water pump 2002 Mitsubishi Galant

When I took out the water pump I seen that the impeller was broken and it was no peaces that fell out what should I do
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2answers
360 views

Crud in Coolant Expansion Tank

I have all this brown/orangish mineral crud in my coolant expansion tank. I've flaked some of the more substantial deposits off as you can see in the last image below. Is it something I should be ...
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232 views

Trouble with overheating - coolant boiling while trying to burp system

I've got a 95 Acura legend with cooling issues. I recently replaced a cracked radiator and the thermostat while i was at it, but the coolant is boiling before the thermostat opens so I can't burp the ...
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817 views

Water from coolant system leaking under engine block

Water pissing out under engine block instantly after water poured into the cooling system. Has something came loose or is cause for real concern and a high-cost repair? In which car will sadly have ...
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2answers
184 views

My bike Dominar 400

Why is my coolant level low again and again. I drive for only 30 kms; after that the coolant is below minimum level. I top it up to the maximum level.
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920 views

Cooling System Cold Radiator

My 2004 Buick Lesabre has a cold radiator and the reserve tank is cold also. The top and bottom hose are warm. There is good heat inside. and the temperature gauge reads normal. I don't see any leaks ...
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3k views

If coolant evaporates, does the anti-freeze portion evaporate as well?

If it does evaporate, then how much in comparison to the water? If it does not evaporate, can I be safe to assume I only need to add water when replenishing lost coolant? Edit #1 I just want to ...
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44k views

Will a radiator suck fluid out of the overflow tank if I didn't fill the radiator completely?

I recently changed the engine coolant in my 2006 Prius. The system is the type which has the radiator cap on the radiator and a separate overflow tank. The whole system yielded about 1.5 gallons of ...
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3answers
569 views

How is oil in an engine cooled?

After reading some articles regarding 'running low on oil', I understood the logic that having more (appropriate amount) of oil is better than running low as oil has time to cool down before it has to ...
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3answers
3k views

Subaru Forester running warm

My Forester (2004 2L XT) has always run in the middle of the temperature gauge - until a couple of weeks ago, since when it has started running warm at slower speeds. Now, it gets right up above 3/4 ...
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504 views

Why do some air cooled engines use a fan with unevenly spaced blades?

The image below is of a "Predator 670" engine with the fan shroud removed. These engines are available in the United States at Harbor Freight. It is a simple air cooled twin cylinder design, commonly ...
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923 views

a little squealing, overheat, coolant overflow, then back to normal

2004 Subaru Impreza Outback Sport, 200K I went for a 50 mile highway drive at 60 - 70 mph. When I arrived, all the coolant that had been leaking from my car started to burn on the exhaust (visual ...
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2k views

Engine overheating sometimes

Vehicle 2002 Mazda Protégé LX 2.0, 238,000 km Symptoms Friend called, his girlfriend's car had been overheating. Mechanic told them the radiator was the problem, as it was out of coolant. Repairs so ...
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3answers
30k views

Why is coolant in the reservoir boiling?

This is a 2011 Chevy Cruze 1.4 L Eco with 116xxx miles on it. The other night I made it home from driving about 30 minutes from work and when I turned the car off I heard some noises. I looked under ...
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32 views

Cooling fans only work normally with cabin fans on

2003 civic EX 1.7L automatic Hello, I am trying to help my friend with a really weird cooling fan issue. The cooling fans were not coming on and while sitting in traffic the car would overheat. ...
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1answer
1k views

Is solid material in the coolant bottle a sign of a problem?

I looked at a Ford F-150 truck for sale today with the 5.4L V8 Modular motor. The truck had no running issues. After raising the hood, I noticed something odd. There is solid material stuck to the ...
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397 views

Why my Fiat Palio 1.6 2005 is overheating only after 5 min of drive?

I have a Fiat Palio 2005 which I bought few days ago. I was driving it for last complete week and it was very smooth there was no problem at all. Yesterday , suddenly on a highway the temprature ...
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164 views

Oil and sulge in water colling system VW golf MK4 1.6 [duplicate]

Hie guys I had oil and sulge in my water cooling system. took out all the coolant and replaced it with clean coolant. took a test drive had the same oil in my system again. what could be the problem?
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2k views

How do you clean out blue devil (sodium silicate/liquid glass) out of your cooling system?

I poured blue devil engine sealant into my engine as a quick fix for my head gasket problem. It's made the issues worse now there is what looks to be white rock salt in my radiator and heater core and ...