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).

Filter by
Sorted by
Tagged with
6
votes
2answers
2k views

Renault Kangoo overheating - Waterpump? Thermostat?

OK guys, I got a call from my mother. The dashboard of her Renault Kangoo '07, 1149cm³, 55kW shows Aladin's wonderlamp [sic!], the temperature bar is at 100%, and a word, "STOP" appears. I've had a ...
6
votes
1answer
2k views

Mazda 2 engine fan starts after turning engine off

Apologies for some unclear terms, I have no idea how some of the components are correctly called in english. I have a 2003 Mazda 2 DY gasoline with about 77k KM driven. Since a couple of months, the ...
7
votes
2answers
895 views

Thermostat behavior and failure modes

If Zaid's excellent How can I test my thermostat? is "Thermostats 101" then this might be the beginning of "Thermostats 201"… My VW Jetta TDI (diesel) has been running cold (about one or two marks on ...
4
votes
1answer
11k views

What is the safe limit for engine coolant temperature?

I just bought a new car and out of curiosity, during one of my trips, logged the data using OBD scanner. I noted the max engine coolant temperature was around 100 deg C. What is the redline here? ...
8
votes
4answers
17k views

Should I use the heater while warming up my car?

I know that you should drive off immediately to warm up your car as your entire car will warm up faster this way. However, the common practice to defrost the inside of your windshield is to blast the ...
0
votes
1answer
102 views

What problems can extended use of water as a coolant during the summer months caused by an internal leak [duplicate]

I drive a 1993 Chevy Corsica which has had an internal water leak for 3 years. I am told by mechanics that the water is going into the engine block or that the heater core needs repair. Because I ...
7
votes
3answers
13k views

Why does my 2006 Chevy Equinox have no heat when all repairs for the heat has been made?

I have: replaced the thermostat about 10 times, back flushed heater core and flushed cooling system out about 10 times, replaced water pump, intake gasket, blend door, mode door, actuators, HVAC ...
2
votes
2answers
397 views

2002 Subaru Legacy coolant overflowed, relatively new head gasket

Yesterday I was finishing a drive of about 80 miles when my heater quit blowing warm air (it's currently winter here). I noticed the temp gauge was at the red mark, so I pulled off the highway and ...
2
votes
2answers
2k views

How long can I drive my truck with the wrong coolant in it?

I put the wrong coolant in my '99 Ford Expedition and I was wondering how long I could drive it before I need to have it flushed and have the correct coolant put in?
8
votes
2answers
831 views

No heat in my 2008 Pontiac Vibe

I changed my thermostat twice in a week on my 2008 Pontiac vibe. My car was blowing cold air and running hot but the thermostat would open up and it would go back down to normal. I would have heat for ...
1
vote
0answers
557 views

Found a cut hose

My 1992 Lexus ES300 has been leaking fluids really bad lately, which it never did. I believed some foul play was involved due to certain individual whom I live with. Anyhow yesterday I was just ...
4
votes
2answers
425 views

No heat in car blowers

I have a Nissan Qashqai 1.5 dci. My car is not overheating and blowers are blowing cool. The lower radiator hose and the bottom of the radiator are cold. I changed the thermostat and drained the ...
8
votes
1answer
617 views

Evans Waterless Coolant

I've seen advertisements for Evans Waterless Coolant and have seen Jay Leno tout it on his YouTube channel. My question deals with the operation of the cooling system after you have properly ...
3
votes
1answer
62 views

te: 95 Integra Engine Coolant leak

New radiator was installed yesterday, because of severe leak. Radiator was topped off with coolant. White milky film observed in old radiator: mechanic indicates that this oil that has infiltrated ...
5
votes
1answer
384 views

1999 Subaru Legacy 2.5 Overheating

I recently bought this car from a neighbor, who warned me that it overheated, but I had bled the system and the car ran fine. Thinking the problem was dealt with I redid two bearings and all the ...
6
votes
2answers
28k views

How long to wait for radiator to cool down before working on it?

I need to drive my Integra to a friend's place to work on replacing the radiator. It's been 70 degrees lately, is waiting 1 hour long enough to allow the system to cool down? Any rules of thumb for ...
5
votes
3answers
4k views

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 ...
2
votes
2answers
59 views

No coolant in Radiator

I had my water pump changed about a month ago. This morning, I started my Jeep to let it warm up and when I went to leave it was blowing cold air. I turned off the heat and turned it to cold and then ...
4
votes
3answers
3k views

What type of coolant should I use on a Dacia Logan Laureate diesel (2016)?

What type of coolant can I use on a 2016 Dacia Logan Laureate diesel? It is a little low so want to top up and see if it lessens again. Its not in the owners manual.
2
votes
1answer
192 views

Overheating issue - 2000 Grand Am GT

My 2000 Grand Am GT overheats. When I turn on the A/C, it goes right back to normal temp. It also leaks coolant. Coolant leaks out for up to an hour after parking it. It is leaking towards the front ...
6
votes
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?
3
votes
1answer
629 views

Loss of water in the radiator

The air conditioning in my vehicle began running hot at intervals, then I noticed that the temperature gauge began bouncing between the hot and middle mark. I was advised to change the thermostat and ...
4
votes
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 ...
6
votes
2answers
389 views

How do car cooling systems cool the engine? Won't the air flowing through the radiator flow over the engine (as it exits the car) making it hot again?

Cool air enters the radiator and becomes hot. Won't the hot air now flow over the engine and make the engine hotter too?
4
votes
1answer
3k views

2014 Hyundai Elantra - Spilling water sound

In my 2014 Hyundai Elantra, I can hear what sounds like water spilling out by the drivers side dash. I pulled in the driveway, sat for a moment, and heard it. I had the defroster on the first time ...
3
votes
2answers
531 views

Ford F150 1999 4.6L anti freeze leaks from drain on engine wall

They say heater core, Ford dealer replaced it 3 years ago. Its leaking from the drain. I have luke warm air from vents. I was told to turn the temp knob from cold to hot a few times, I did and it ...
3
votes
1answer
649 views

Changing Coolant in a 1999 Ford Taurus

After I flushed the radiator and filled it with fresh coolant (50% mix) up to the optimum level in the reservoir "low coolant" light comes on when I drive the car. The engine does not over heat, ...
3
votes
1answer
33 views

2001 Saab radiator end tank has split open (6" SPLIT)

I had an end tank split open on a trip last fall. I had moderate temperatures going up long hills and replaced it. 10 months later, the new radiator did almost the same thing in cooler weather during ...
3
votes
1answer
66 views

3.4 2000 chevy venture ls is pushin water up in the radatior

in my 2000 chevy venture 3.4 LS my water in my radiator pushes up instead of goes down and builds pressure on the over flow. What causes that? Would a head gasket or intake cause that?
3
votes
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 ...
1
vote
2answers
3k views

My head gasket was fixed but I still have a leakage

I have a leakage, the cooling fluid reservoir is empty and some has leaked from the radiator. I already fixed my head gasket that was leaking. Now the mechanic is telling me I need a new water pump, ...
5
votes
0answers
38 views

2004 Saturn Ion Quick Connect from OEM

I've purchased a new radiator for 2004 Saturn ION and it came with quick connect fittings. My oil cooler lines require thread connect. Is there a way to switch them to quick connect, or is there a ...
6
votes
1answer
2k views

Holden Captiva - Lots of oil pouring out the radiator expansion tank

On my 2012 Holden Captiva 2.2 diesel car the radiator expansion tank has filled with engine oil and now the oil is pouring out of the expansion tank. I am at a loss to why/how this has happened. Any ...
6
votes
1answer
2k views

Excessive Coolant Expansion with No Overheating

I've noticed that my coolant expands quite a bit when I drive around, so much that I'm loosing coolant through the expansion bottle. When I park after a lengthy drive, I'll usually hear the coolant ...
5
votes
2answers
34k views

Bubbles coming out of the radiator. Head gasket?

I was bleeding air from my Honda Civic yesterday. Everything was going well until the coolant was still bubbling after 40 minutes of bleeding. I did everything correctly. Turned the heater to max, I ...
4
votes
2answers
1k views

2005 Chrysler Sebring coolant bubbling and leaking

I have a 2005 Chrysler Sebring and when I go down the street the temperature gauge starts going up. It doesn't ever go past the half way mark on the temperature gauge but my coolant is still bubbling ...
7
votes
2answers
1k views

1996 Chevy K1500 Silverado ZZ4 5.7L - Rough Idle, Plug Damage, Overheating, EGR

I'm having some serious problems with my truck. It started out as rough idling and then it got worse. I have replaced all 4 O2 sensors, temperature sensor, knock sensor, distributor wires, ...
9
votes
3answers
515 views

Should I get 2nd Opinion on head gasket issue?

My daughter's car had a check engine light on and was overheating. We had it towed to a mechanic and he did the block test with the vapors. The mechanic said the blue stuff turned yellow immediately ...
3
votes
2answers
392 views

Renault Clio 2002 high idling on startup

I have a Renault Clio 2002 and when started it idles at 3000rpm I have been told it could be a issues with the coolant temp sensor as it tested at -30C.
2
votes
1answer
394 views

Just bought a car, engine running hot, found pure water for coolant [duplicate]

Just bought a 01 Galant 128k. Engine seems to get hot quite a bit, approaching the red zone but has yet to overheat. Found pure water in the coolant reservoir. Will draining the water and replacing ...
4
votes
1answer
451 views

less coolant everyday in the radiator reserve tank

Can anyone help me for my 2006 Honda Civic? Radiator and the radiator have been replaced. No leak in the cylinder head and still the reserve tank keeps reducing in liquid volume daily. Does anyone ...
1
vote
3answers
53 views

Redundent radiator

A 2000 town car limo was build just in tolerance for the 4.6 engine capability. Even at brand new it would overheat if you push it to hard. It is older and less efficient and it over heat in general ...
3
votes
1answer
583 views

2007 Kia Spectra engine temperature fluctuating

what would cause my kia's engine temperature to start fluctuating. it never gets hot but it will rise 2 bars on the temp gage and when it rises to the second bar over where it normally reads my ac ...
2
votes
1answer
114 views

My coolant has oil in it could this be the coil?

I have oil in my coolant. I don't have coolant in the oil. I got told it will want flushing out and a new coil. I have a Vauxhall Astra 2006 1.6 engine
2
votes
0answers
100 views

coolant fans on 93 cadillac seville are not working

i tested the fans , they work ok, 50 amp fuse is ok and tested for power to it. ok, digital display is showing temperature as it rises, hit 220 and the fans do not come on....is there a relay ...
4
votes
1answer
72 views

Radiator fluid leaking from reservoir

I had the head gasket done because of overheating 2 years ago, now it seems the problem is back. When the car starts to overheat I will put in coolant but the next day if I do a long distance drive I ...
0
votes
1answer
64 views

Troubleshooting Cooling System Problem

I Own a Mahindra 4*4 Pickup truck , Its running at high temperature. I have changed the following: Radiator Temperature sensor Water pump Hoses pipe Coolant Please could you help me resolve the ...
1
vote
1answer
81 views

Engine reversing water to the over flow container

I have a 1999 Pontiac Montana Van. The radiator fluid is backing up to the over flow container. So,what can be my problem? I put new thermostat in and flushed the radiator. Are there any ...
3
votes
2answers
531 views

Subaru 2002 Impreza 2.5 TS - Head Gasket

My Subaru started overheating; it had run out of coolant completely. Once I refilled the coolant, the car ran about a 1.2k mile trip just fine without any overheating. Recently, the car started ...
4
votes
3answers
282 views

My car is overheating but its not waterpump or thermostat related by-passed heater core

I have a 91 Firebird Formula. I have the electric cooling fan by-passed to run constantly. The car does not overheat idling, but does while I'm driving. The problem is not coming from the water pump ...