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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18 votes
9 answers
496k views

Can I drive a car with only water and no coolant if it has a leak?

Recently, I was informed that a car I share ('02 Nissan Sentra) was close to overheating. I was told it gets close to the upper limit very quickly upon running the car. When I inspected the vehicle, I ...
0 votes
1 answer
98 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 ...
1 vote
1 answer
34 views

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.
0 votes
1 answer
61 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 ...
3 votes
2 answers
5k views

Blue Devil effect on water pumps

I used Blue Devil Head Gasket Sealer on my 2006 Ford Explorer about 6 months ago, and it's worked. However, I am now noticing some antifreeze dripping on my garage floor, which seems to be coming from ...
2 votes
1 answer
2k 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 ...
0 votes
1 answer
329 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 ...
1 vote
1 answer
190 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, ...
6 votes
3 answers
45k 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 ...
0 votes
1 answer
82 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 ...
2 votes
4 answers
560 views

VW Golf TDI 2007 Coolant Leak

Had waterpump replaced and belts, but the reservoir keeps running out of water in traffic but seems okay on open road, mechanic has had a look and no visible leaks and checked gaskets and all okay. ...
1 vote
0 answers
36 views

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 ...
2 votes
3 answers
80 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 ...
2 votes
3 answers
3k views

Pontiac Grand Prix 2007 engine hot at idle

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 ...
1 vote
2 answers
45 views

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. ...
1 vote
1 answer
3k 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 ...
1 vote
1 answer
165 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. ...
2 votes
1 answer
1k 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 ...
0 votes
1 answer
39 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 ...
1 vote
1 answer
160 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 ...
2 votes
2 answers
7k 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 ...
6 votes
4 answers
14k 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?
0 votes
2 answers
74 views

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. ...
2 votes
1 answer
144 views

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?
2 votes
0 answers
20 views

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 ...
3 votes
1 answer
66 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 ...
2 votes
3 answers
14k views

Dodge Ram - no heat at idle but have heat when driving

I have a Dodge Ram 1500, I have changed the heater core, radiator, the water pump, and the thermostat. When I push on the gas it blows out hot air but when its at idle it blows out cold air.
10 votes
4 answers
11k views

50/50 Coolant Dilution after distilled water flush?

I have a new (to me) car that it appears hasn't had a coolant fluid change ever, now with 120k miles. It is an 04 Corolla. I am planning on flushing the system with distilled water a few times. But ...
1 vote
0 answers
936 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 ...
3 votes
3 answers
2k 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 ...
5 votes
2 answers
893 views

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 ...
8 votes
9 answers
134k views

What can cause a vehicle to run hot, but not overheat?

Anyway, I have a Grand Am 2003 V6. It only has 80k miles. My car ran great when I got it(used), but at some point it began to have minor temperature problems. It would always run a little bit hotter ...
1 vote
2 answers
87 views

Reservior keeps blowing the cap and coolant

I have a 98 Volvo S70 T5 2.3L Turbo. I've replaced my thermostat, I know may head gasket is good because I've done the checks to see if its bad and the oil isn't Milkey, the cylinders when I replaced ...
0 votes
1 answer
32 views

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, ...
7 votes
5 answers
24k 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 ...
1 vote
1 answer
128 views

Engine Runs Cold Nevers warms up above 1/4 way. 1995 Chevrolet G20 4.3L V6

1995 Chevrolet G20 3/4 ton Van 4.3L V6. The van never runs any warmer than 1/4 on the instrument panel. I have replaced the thermostat twice. Same issues. I have replaced the temperature control ...
5 votes
3 answers
6k views

Car engine is overheating while Coolant Temp Sensor is normal

I bought a BMW 318i and the engine overheated twice so far while the coolant temperature sensor is normal. If we exclude the possibility that the sensor is malfunctioning, what problem would cause ...
15 votes
9 answers
98k views

My car's coolant temperature reaches almost 100 C / 212 F in a fast pace

Today, after a very hot day, I saw that my coolant was almost reaching 100C/212, I pulled over, stopped and took a look over the hood. The very little water that remained in the coolant tank was all ...
3 votes
3 answers
8k views

What is causing Mazda 3 overheating and cold heater?

I have a 2006 Mazda 3 s with 167,000 miles. The engine is overheating and the heater stops blowing warm air soon after starting the car. I replaced the thermostat to no avail. I took it to a radiator ...
1 vote
1 answer
2k 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 ...
9 votes
3 answers
47k views

Engine never warms up (actually: it cools down) at highway speeds

I have a 1997 Caravan (base model) and normally on my drive to work and my highway drives in rush-hour, the engine warms up just fine. I took a road trip for work, about an hour and fifteen minutes ...
2 votes
1 answer
2k 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 ...
1 vote
2 answers
7k 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, ...
4 votes
3 answers
171k 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 ...
0 votes
0 answers
57 views

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 ...
1 vote
3 answers
14k 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. ...
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. ...
1 vote
2 answers
4k views

oil is mixing into coolant water

i have an opel astra twintop 1.6 2009. oil is mixing into coolant system. there is oil in expantion tank. almost all the oil goes into expantion tank. Can you show me the way how to solve it? we ...
0 votes
5 answers
64k 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 ...
1 vote
2 answers
348 views

2000 Ford Expedition XLT 5.4, Possible Bad 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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