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
14 views

What are the effects of using sulfamic acid to clean a radiator that is plugged up about 75%?

I've got a 1991 school bus with a CAT 3116 that gets a little hot on the highway and the stop engine light comes on. Only the top 25% of the radiator gets hot while the bottom remains very cold. I've ...
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3answers
7k views

Why are the blades of car radiator fans unevenly spaced?

Fans that look like this: Is it to somehow help the balance of the engine?
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1answer
37 views

Audi 100 1990 Sedan,cooler hose bulging = distaster waiting to happen, right?

I must admit I haven't really paid attention to the coolant hoses, but today I noticed something. That coolant hose leading to the radiator doesn't look healthy with that bulge and there is also a ...
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7k views

Consequences of adding Blue Devil headgasket sealer to a car with no obvious problem?

I was doing some general internet browsing and stumbled across Blue Devil head gasket sealer which advertises permanent fix to any head gasket leak. The reviews on the internet also seem to be quite ...
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1answer
37 views

Trouble shooting cooling system

Is this the water pump, or what? I have a 2008 Lincoln MKX and have been experiencing a leak from one of the hoses from the coolant tank or radiator for several months according to one mechanic. It ...
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2answers
2k views

Will an engine overheat if it has no coolant recovery tank?

My wife's Mini has a leak in the coolant recovery tank, and she has been told by the dealer that her car is at risk of overheating without the coolant recovery tank.Frankly, I don't believe it. Cars ...
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1answer
2k views

Honda civic 03 overheating, checking the cylinder head and block for cracks?

I have 150k on my 03 Civic it has overheated several times. I can drive the car around town without it overheating, but when I drive it on the highway for an hour and it will overheat. I thought I had ...
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1answer
151 views

radiator removed – is it still possible to flush system?

I'm replacing radiator and a/c condenser on my car. After hitting a deer, they both bent inward and most of the coolant leaked out of the car. I got both of them off the car and realized I forgot to ...
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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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1answer
31 views

2011 Chevy Silverado Engine Temp Fluctuates when cabin temp set high

I have a 2011 Chevy Silverado 2500 with a 6.0 L. I never noticed this before because I was living in the south and never really had to increase my cab temp too much. Well I just moved to northern MI. ...
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1answer
624 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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3answers
13k views

Coolant disappears from coolant reservoir but no leak observed

I just replaced the water pump in my 2005 Ford Escape V6. I discovered that each time I fill the coolant reservoir with coolant and drive the car, by my next stop the coolant reservoir will be ...
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1answer
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 ...
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1answer
356 views

How should I flush out a head gasket sealer?

I purchased a 2002 Ford Taurus, little knowing that it had a head gasket leak. After it was driven for a week or so it started overheating. I am assuming that the person that I bought it from put ...
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3answers
9k views

Should you change a thermostat when changing your water pump

Just got my water pump changed. Now my thermostat is trying to edge up. Should you change your thermostat when you change your water pump?
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Why does car get hot when at a stop light

Vehicle vibrates a little when at a stop and starts to overheat , once I get going the temperature starts dropping back to middle. What do you think the problem is?
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3answers
844 views

Pontiac Grand Prix 2007

I noticed lately that on my dash engine heat goes close to hot but never really gets there. That usually happens when i am in idle. When i start driving it goes back to normal and only sometimes goes ...
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1answer
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Can I use a lower ratio of coolant to water in a hot climate? (N. Texas)

I'm looking at a fluid flush for my 2010 Nissan Altima. I want to ask if there are concerns or benefits to using a lower coolant ratio. I travel to Kansas for the holidays, where it's quite a bit ...
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3k views

2002 Dodge Ram 1500 overheating

I have a 2002 Dodge Ram 1500 two wheel drive with a 4.7 liter engine. It's been overheating so I replaced the whole cooling system: I replaced the condenser cooling fan because its not coming on ...
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1answer
456 views

Blown head gasket? (Decent compression numbers but cooling system doesn't hold pressure, no external leak)

I have a Mazda MX-5 and it was overheated due to the water pump belt failure. I replaced the belt afterwards and the car drove fine. I brought the car to the shop and they told me it has head gasket ...
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1answer
20 views

2007 nissan pathfinder

-I've went down the list,basically a process of elimination,ive changed water pump,thermosatat,flushed system, changed hoses,camshaft senser,flushed heater core,changed heater core sending unit,and it ...
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Nissan Versa 2007 Coolant Change Problem

So I changed my coolant, online it said I need 6 ltr but it only took 5 and that was including filling the overflow tank to the max level, I had it jacked one side high and tried to burp it. I took it ...
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Does coolant have a shelf life? [duplicate]

I have found some old opened bottles of coolant (green, undiluted, aluminum safe) in my garage, they've been opened and partially used. The remaining coolant has been there for somewhere between 5 ...
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3answers
3k views

Radiator has a leak and the upper hose is clogged, car does not overheat. White smoke from upper hose

My car is a 2003 Buick Century and it has been leaking for the past few months (puddles of coolant under the car). Now the car begins to have white smoke coming from the engine and it has a sweet ...
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2answers
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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2answers
41 views

2000 Ford Expedition XLT 5.4, Possible Toast Heater Core?

I recently just flushed my heater core on my 2000 Expedition. I did a full flush, then a reverse, then another flush. Filled heater core with anti-freeze to insure air didn't get trapped in the core. ...
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1answer
176 views

Mazda 3 SP leaking coolant

I have a Mazda 3 SP 23 2005 _ manual _ 2.0 Liter unleaded. I have noticed that some cooling liquid started leaking on my parking spot a week ago. The leaking stains are becoming bigger day after day. ...
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0answers
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Elite i20 AC problem

My Hyundai Elite i20(2017 model) was running fine till I gave service in one of the hyundai showroom. Last week I gave my vehicle to service at authorised Hyundai showroom(odometer - 33000km). After ...
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Drove exactly a mile on water in the reservoir. Overheating after coolant added. What could be the problem?

So I drove to the gas station to put air in my tire when I realized I forgot to clamp down a coolant hose going to radiator after working on swapping the alternator. My hood was steaming and there was ...
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1answer
96 views

How to flush a cooling system after head gasket failure?

I recently replaced the head gasket in my Renault K9K (700) 1.5 DCi, due to a cylinder/cooling system type failure. As such, the cooling system is full of partially burned diesel. Despite having ...
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3answers
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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7answers
44k views

Is it okay to add straight anti freeze to an engine?

I was reading online and found a few people saying you should never add concentrated anti-freeze to a cooling system. you should only dilute what you already have in there with water and only add anti-...
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My toyota vios 2008 green temp light keeps blinking when switch on and car won't start. How to fix this?

My toyota vios green temp.light came on and the car won't start. The cooling fan keeps on running . But everything seems to be ok. I replaces the etc sensor but stil it won't start. Any idee what the ...
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0answers
34 views

Engine coolant not hot

Recently bought a 85 bronco ll with a 2.8 motor. Engine coolant won't reach normal temp. Changed the thermostat, flushed and refilled coolant, but still had the same problem. Replaced radiator cap, ...
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0answers
29 views

2006 Hyundai Trajet G4GC engine not getting hot enough

This is a 2.0 petrol engine. Already had the t'stat replaced twice. When the car is stationary in the P gear, the coolant temperature gauge will slowly reach 40-45% of the scale and stays like that. ...
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3answers
132k views

car over heating and white smoke coming out of the hood

I have a 98 Honda civic that I bought a few months ago. It has an after market fan that i have to turn on when I'm driving to keep it from over heating. In the winter time it wansnt a big deal to turn ...
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2answers
51k views

Temperature gauge needle is on Hot, but engine is not overheating

car is a 1996 Honda Civic EK hatchback. B16A2 DOHC VTEC engine. Currently has 204,000 kilometres (127,000 miles) When the car is on a stop and idling, the temp gauge needle goes up steadily, and when ...
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1answer
83 views

What actually happens when there is no Thermostat ( bypass thermostat)in coolant system?

What actually happens when there is no thermostat (bypass thermostat) in coolant system?
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3answers
30k views

Overheating at idle - mechanic says head gasket

My car has been overheating at idle after a long period of time - perhaps 20-30 minutes in traffic. If I drive, it immediately starts to cool down again. I don't drive often so it hasn't been an issue ...
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0answers
19 views

Coolant smell outside of car

I have a 2010 Nissan Murano. Last summer (2018) I started smelling coolant when I get out of the vehicle or am at a drive thru with my window down. There is never any coolant on my garage floor. The ...
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1answer
34 views

Car over heating when idle

My Mazda 6 started overheating during a heavy traffic day. Ever since, I noticed it would only start over heating only when the car is idle at a light, traffic, or parked for about 5 minutes and then ...
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6answers
321k views

What happens if I drive without antifreeze in my car?

What happens if I drive without antifreeze in my car (no water / no antifreeze)? This is my main question. I've added some follow up questions that are specific to my situation but for the main ...
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3answers
2k views

VW Polo strange issue of overheating

can I kindly ask your opinion on my car issue? I'm not deep in field of engines and this problem is causing my serious headache and a total waste of cash without any results. I've a 2015 VW Polo TDI. ...
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1answer
9k views

Coolant pressure issue

I am in need of some assistance. I am having a coolant pressure on my 1.8 16v clio. (Renault), coolant, cooling-system, overheating (car maintenance) In that when left to idle and engine gets up to ...
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0answers
79 views

Why may heating gradually stop after some time driving (and doesn't work in passenger side at all)?

This is a somewhat strange problem. Heating (in driver side) seems to work normal - after somewhere between 15-25 mins. driving or so, it gradually stops working. The warming in passenger side doesn't ...
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13 views

Mini cooper 2003

Hi I have an issue with my 2003 mini. Temp is only running at quarter and after a while if I am stationary it will go up to half way and no further, but when it his halfway it will make a farting ...
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1answer
2k views

How to diagnose low water temp on Mini Cooper

My coolant temp looks like this: It fluctuates, but never really goes much higher than the first bar. It's not really been a big issue for me, better cold than hot, however the cabin heater has ...
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2answers
83 views

1990 Honda Accord Overheating

First let me state I've been an Auto Tech since about 1967, so this is kicking my butt. I've replaced the water pump, radiator, lower hose, thermostat, fan sensor, coolant sender, engine temperature ...
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0answers
22 views

Air Bubbles In Radiator Geely LCX 1.3

we have a Geely LCX 1.3. The radiator blew a few months ago and we immediately stopped driving it. First we had the head skimmed and pressure tested and replaced the gasket and also had the radiator ...
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3answers
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 ...