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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Lexus ES330 - cooling fans not coming on, there is a disconnected cable but I can't determine where it goes

The car is overheating and I've found that the fans do not turn on. After checking fuses/relays I found the plug in the attached picture was not connected. However, I can't figure out where the male ...
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2 answers
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Truck is overheating only while idling

My Problem 2011 Chevrolet Truck Silverado 1500 WT 2WD 4.3L FI OHV 6cyl is overheating while idling. It takes about 2-3 mins, so drive thrus and multiple red lights back to back are the main culprits. ...
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Chev Spark 1.2 using water , no leaks evident. Car runs fine and driving in 30° c heat.hecked all over. Car runs fine

Cooling system using liquid daily. No leaks evident n car runs fine.
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2003 Subaru Outback coolant overflowing

I have a 2003 Subaru Outback Put new radiator, new hoses, new housing, new tstat, new belts, new Reservoir and hose and flushed it and it still sprays coolant all over the engine from the Reservoir. ...
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1 answer
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Opel Astra hatchback is taking too much water and the water bottle is boiling in a short time drive or I should add water while its runing

My car its Opel Astra hatchback. It is taking too much water and the water bottle is boiling after a short distance. What I'm suppose to do?
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Replace radiator

In changing a radiator in a 2005 GMC Canyon with a 3.5, 2 wheel drive. Can I get the radiator out without opening any lines on the AC unit. Can I get the AC condenser off the radiator without opening ...
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What is this connector piece called coming from radiator?

Hello I have a 1992 F150 5.0L XLT. I noticed a slight coolant leak coming from this hose/connector to the radiator. What is this type of connector piece called that is circled? The end of the coolant ...
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How to distinguish the engine cooling flow and turbocharger air flow to/from radiator/intercooler?

I can't distinguish between the flow of engine cooling (coolant) with the flow of turbocharger air to/from the radiator (intercooler?). I have no foundational knowledge of automotive/automobile, ...
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252 views

Opel Astra H - lowering original temperature the fan kicks in

I have got Astra H, Z16XEP engine. The engine operates in very high temperatures originally - 105-113°C. I want to lower a bit temperature the radiator fan kicks in: currently 113°. How that could be ...
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'04 Ford Escape A/C is blowing ice cold air while driving but not idling

I own a 2004 Ford Escape V6 2wd, that has good R-134 refrigerate levels, blows ice cold air while driving or when A/C has been turned on while idling (ex. Like sitting in a parking lot) but once it's ...
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What could cause bubbling/boiling in my surge tank?

I drive a chevy cruiz, and my coolant is bubbling/boiling like. There is no leaks, nor overflows, my coolant doesn't drain, and my vehicle doesn't overheat either. According to my temp gauge. Heck, my ...
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3 votes
1 answer
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Two Questions Regarding Issues With my Subaru SVX Cooling System

I have a 1996 Subaru SVX with a leaking heater core and I wanted to know or confirm two things. First of all, I started the car and allowed it to idle up to warm and fluid levels were normal. I came ...
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2008 toyota corolla overheating and heater not working

My corolla temp will gradually go up while driving and then come back down on its own while driving. The heater is not working. Blowing cold air. We have replaced the water pump, thermostat, and ...
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16 votes
9 answers
9k views

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. ...
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Assuming all coolant is drained (radiator and engine block), how does the system prime?

I've got a car with a radiator punctured near the bottom. There is no coolant in the radiator or in the expansion tank - that much I can see. I assume coolant is gone from the engine block as well (by ...
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Fans are running at all time [closed]

The fuse and relays are all OK, but both fans are just running with a key that has not even been started. You can only stop if the relays are removed or locked. Please help me find a solution.
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Did I break my radiator fan?

This morning I turned on my 2013 Kia Rio without realising snow had gotten into my engine bay and my radiator fan got stuck with it. After I noticed a burnt plastic smell I inmediately turned off the ...
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Can I add food coloring or color dye to the cooling system? (UV dye won't help my situation)

Context: My 2004 Dodge Neon's transmission cooler failed, causing the transmission fluid and antifreeze to intermix in both systems. I replaced the radiator, thoroughly flushed the cooling system, and ...
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How does a water coolant work as a car coolant using newton’s law of cooling?(high schools student needs help)

I am a high school student that is really interested in car engines and how they work. I am in the process of writing my school report, and I am thinking of doing it on car coolant. Using newton’s law ...
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2 answers
34 views

ECT registering low at steady state. (low enough to set a code) No explanation

A little back story, this is a 2015 Jeep Wrangler. Since 2017 I've kept an eye on coolant levels because sometimes I can smell burning coolant when I'm in front of the vehicle (not in the vehicle). ...
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A/c gauge temp doing weird. Sky coupe gt 350

I have a gt350 coupe and I know when I am parked with the a/c on it will overheat in an hour, so I need to turn a/c off. But this time while driving the temperature gauge started going down, not ...
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1 answer
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Can I get by without a coolant drain bolt washer in my 1997 accord

I just did a huge timing belt and seals job that included replacing the coolant in my 1997 accord with the f22b2 engine. The drain bot washer fell out, and I didn't notice it, so I put back the drain ...
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2 answers
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Anti-freeze to use on an old classic truck 1953 International

What type of anti-freeze should I use on my 1953 international pickup truck with a stock radiator?
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1 answer
169 views

2006 Toyota Camry radiator issue

By no means am I a vehicle mechanic, but I've learned a lot from dealing with my old '06 Camry. Correct me if I'm wrong, but this appears to be the valve of the radiator that is not fully sealed, ...
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What is this part - air intake for Skoda Octavia

The piece in the centre is missing a cap/top of sorts. This is a Skoda Octavia (with a VW Polo engine), front right engine room. Any idea what this part is called? Checking the manual yielded no ...
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0 answers
139 views

Is it damaging to a hybrid's gasoline engine to let it rev high before it warms up?

Generally, it is not a good idea to let an engine reach high RPMs when it is cold. The potential issues with a cold engine under full throttle are well documented. I have a Fusion Energi and the car ...
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Coolant Leaks while Engine is Running on 2003 Hummer H2

So this vehicle is leaking coolant. And I couldn't see where the leak was coming from when looking over the hood or under the car, but it looked like it came from the water pump. I got the water pump ...
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1 vote
1 answer
48 views

Is it right to presume that the top hose to heater matrix is always the hot hose?

Is it right to presume that the top hose to the heater matrix always comes fom the engine goes to the heater matrix and then exits, cold, to the lower radiator hose? I have an o series engine ...
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2 votes
3 answers
79 views

06 Ford Focus Automatic chugging in hot weather, showing below minimum coolant. add water, or risk the drive?

I have a 2006 Ford Focus Automatic which is chugging in hot weather and seems to lose some power. I'm hoping, but I am in no way mechanically minded(!), that because it is showing below minimum ...
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1 answer
51 views

AC works better when driving than when not driving

The weather outside today was more muggy than a 20 ounce mug with a pugs mug printed on it... being acquired in a mugging incident. I mean it was hot. Hotter than a hot place. So... in my '98 Ford ...
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2 votes
2 answers
92 views

Have a feeling Mercedes V8 W164 Engine is Running Really Hot

I have recently purchased a 2006 Mercedes Benz ML500 W164 with approx 215K KM/130K miles on it. A few days ago I was showing it to a friend who after a drive inspected the engine and mentioned he ...
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1 answer
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Is this shop trying to take me? [closed]

hi hello greetings and salutations, oh... and HOWDY, yawl. Just acquired me a used and mysterious 1998 5.4 v8 ford van. I didn't know much about it other than it was runnin ok, I guess. Took her to ...
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03 Blazer 130,000 miles

Hey guys in need for some serious help. After spending 2000 on repairing my 6 MO. Old truck (and not to an acceptable standard), i have a crack down the plastic part that holds in my radiator and im ...
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5 votes
1 answer
9k views

Will driving car without coolant cap do long term damage to car?

So this morning I did something stupid. I had checked the coolant in my car and it was fractionally below the min point, but still fluid in the tank. I poured in some water so it filled to between the ...
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1976 Leyland Mini engine block coolant is blocked

Was doing routine radiator flush after engine overheated while on longer trip. Hasn't overheated on around town trips. Radiator coolant was clear green with no lumps or other material coming from ...
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On cars with 2 Thermostats, how exactly does coolant flow through the block?

How does the coolant flow in each of the following 3 cases: 1) both stats closed, 2) stat at the water inlet open (nissan calls this stat the thermostat) 3) both stats open (nissan calls the stat at ...
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1 vote
2 answers
107 views

Cooling system problem (Car gauge always at cold) 2006 Honda fit 1.3L IDSI

I have a 2006 Honda fit 1.3L IDSI and Im having a cooling system problem. Engine Coolant Temp gauge always at cold. can u guys help me narrow down the cause of this? I recorded some data with my ...
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1 vote
2 answers
4k views

Overheats only when running at low RPM

Car in question is a 2010 Mazda 3 2.5L. 193,000kms. My car's temperature starts to rise when idling or driving at low RPM. Before this problem started, the coolant temperature always stayed at 88C. ...
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18 votes
12 answers
7k views

Do mobile air conditioners exist for cars?

Even if my home has no integrated air conditioner, I can add one in my room by buying a mobile air conditioner. But if my car does not have any air conditioner, can I create cool air with an ...
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3 votes
3 answers
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Is it bad to let a car sit for a few weeks with an empty cooling system?

The cooling system in my car is full of rust. It's quite corroded. I have drained and flushed the system but need to wait for some parts to be delivered in 2 - 3 weeks. The system is now empty of ...
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1 vote
0 answers
501 views

temperature gauge on my Ford Focus keeps dropping to 1/4 when temperatures outside at below freezing

I have had my car into a mechanics shop under warranty numerous times over a 3 week span. My first initial problem was that my temperature gauge went from sitting in the normal spot (half way on the ...
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1 vote
0 answers
39 views

Car not staying warm in gear

I have a crystler 2013 town and country van. I changed out the thermostat and flushed the coolant. It will start to heat up in park but when you put in gear to drive only maintains heat for 10 miles ...
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1 vote
1 answer
30 views

Thermofans not staying on long enough?

I am working on a 1988 Honda Accord (2lt, injected, A-series engine) that has been sitting a while. I am getting an issue with it overheating (after about 20 mins idling). The thermofans kick on at ...
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Boiling coolant and car is smoking

I have a 1999 civic EX and today while going to work I was stuck in traffic for a long time due to a snowstorm. After a while my car started smoking crazy. The smoke was coming out from under the hood ...
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1 vote
1 answer
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Jeep Renegade 2015, engine temperature light

This might be very stupid but I only have this car since 2 weeks (bought used). Today I noticed, that one of the red lights on the spectrum of the cooler temperature measure is on. It is the one ...
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1 answer
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Will using CLR in a cooling system flush damage seals, hoses and gaskets?

My car (88 Accord) has a significant build up of rusty sludge and gunk. Even after a few normal flushes and one with a radiator cleaner product, the gunk remains. Someone suggested using CLR to clear ...
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8 votes
5 answers
13k views

Rusty coloured coolant?

I am working on a 1988 Accord (CA) that has been sitting for some time. There was a problem with the cooling system - air pockets and bad water pump bearing - so I replaced the pump and drained the ...
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1 vote
1 answer
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2014 CX-5 hot air - possible overheating?

Hopefully someone can shed some light into what's going on. For the last couple of days we have been in a cold snap around -30C. I was driving the car and noticed that the ambient (outdoor) ...
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1 vote
4 answers
1k views

How long can a bad head gasket last? [closed]

Coolant is dropping in my radiator. There is bubbles of gas coming out the radiator when the car is running. So, this seems like a bad head gasket. I think my options are to change the head casket or ...
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1 vote
1 answer
325 views

How long can I run radiator flush in my car?

My cooling system is quite nasty and needs a flush. I followed instructions on radiator flush, which said to run the car no more than an hour. However few tutorial videos online suggest running ...
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