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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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1answer
24 views

'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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33 views

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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1answer
33 views

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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9answers
8k 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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1answer
38 views

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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1answer
32 views

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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1answer
48 views

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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0answers
111 views

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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1answer
85 views

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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2answers
26 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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66 views

Peugeot 206 2003 engine overheating STOP light

I bought my 2003 Peugeot 206 second hand from a private car dealer about 4 months ago and everything seemed ok, except for the exhaust pipe appearing to be tied with plastic zip locks. About a month ...
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1answer
47 views

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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1answer
49 views

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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2answers
38 views

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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1answer
73 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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1answer
119 views

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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0answers
91 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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1answer
116 views

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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1answer
39 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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3answers
61 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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1answer
47 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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2answers
67 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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1answer
63 views

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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0answers
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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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1answer
3k 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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0answers
71 views

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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0answers
74 views

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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2answers
81 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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2answers
3k 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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12answers
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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3answers
861 views

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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0answers
290 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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0answers
35 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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1answer
29 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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1answer
104 views

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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1answer
94 views

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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1answer
312 views

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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5answers
10k 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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1answer
93 views

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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4answers
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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1answer
242 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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2answers
892 views

HOLD light flashing, engine temperature gauge "C"

My 2009 Chevy Aveo 5 with automatic transmission has an issue that started today; on the way home on the freeway, the HOLD light started flashing. I noticed later that the coolant temperature gauge ...
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1answer
56 views

What damage could cause by broken coolant resovoir cap?

My Honda jazz coolent resovoir cap broken. I'm planning to replace just the cap by myself. What damage could cause by broken cap besides overheating ? Do I need to do coolent replace ? Is air could ...
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2answers
216 views

Will an electrical cable tie secure a rad hose for 20 kms?

In an emergency to get one home etc, would electrical ties hold a rad hose on, if one of the hose clamps broke? Cheers
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1answer
376 views

Rubber pieces found in engine coolant

ISSUE: I found small pieces of rubber debris in the coolant. They are a little smaller than part of a fingernail clipping. The rubber hoses have flaking rubber when inspecting them on the inside. ...
2
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1answer
4k views

Why did my temperature go down when I turned on A/C?

My car has been running hot and I'm going to be putting in a Thermostat to fix this. However, I have noticed that when I turn on my Air Conditioning, the temperature goes down. I would expect ...
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0answers
264 views

What's this loose o-ring in radiator neck?

2002 Toyota Corolla. Changed out the coolant on our friends car to find a beat up square rubber o-ring loose in the radiator neck. Photo below with it resting on the radiator. Please advise if this ...
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1answer
165 views

How can I tell if my radiator is bad?

I have a problem with overheating (1988 Honda Accord CA/LXi). I've replaced the water pump, radiator cap and thermostat, with no change. I've flushed the system and the coolant came out clean. There ...
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1answer
87 views

Are some engines produced without coolant overflow containers?

I bought a used mini excavator (Terex HR1.6). I followed the overflow hose from the radiator. It ends in free air – i.e. no overflow tank or valve or anything. I have the machine's manual, and I can'...

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