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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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1 answer
347 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 ...
0 votes
2 answers
187 views

Motorcycle (MT-07) coolant temperature reducing to 60ºC when driving on highway

On the last couple of days I have started noticing that whenever I ride at highway speeds (around 100 kph) the coolant temperature reduces to around 60ºC. If I ride slower it goes back to normal ...
2 votes
4 answers
585 views

Why aren't cars built with two or more ECTS sensors [closed]

Why don't cars come equipped with two engine coolant temperature sensors so the ECU can detect false ECTS readings-inaccurate readings but within system range. I'm aware of cars that come with one ...
0 votes
1 answer
831 views

2014 Chevy Cruze 1.4l turbo

coolant boiling out overflow after replacing water outlet, and thermostat. Have no leaks even did a pressure test and used the spill free funnel to burp the system. Radiator fans will not come on and ...
1 vote
1 answer
45 views

Car is running hotter after new radiator install (thermo fan coming on later)

I noticed there was a small crack in the radiator of my 93 VW Golf/Rabbit Cabriolet. So I ordered a new one and installed it. However, the car seems to now run hotter - or, at least, the thermo-fan ...
2 votes
3 answers
126 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 ...
0 votes
2 answers
90 views

Replace thermostat or use head gasket sealer first?

1997 Pontiac Sunfire 2.4L I have a cooling system puzzle to solve. My cars temperature gauge isn't showing it is overheating but it is running hot. If I open the hood after trips longer than about 10 ...
1 vote
1 answer
26 views

How do I burp a 2006 Subaru Forester?

2006 Subaru Forester cooling system issue. Fans next to radiator work when A/C is turned on. No heat coming from Heaters . No leaks. A/C recently re-gassed. Alerted to the problem when radiator boiled ...
0 votes
1 answer
842 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. ...
2 votes
3 answers
4k 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
176 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
367 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
2k 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
51 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 ...
0 votes
1 answer
155 views

Toyota Avensis 2006 1.8 petrol engine cooling fluid disappears quickly when fan turns on

I have issue with engine coolant rapid level drop in my Toyota Avensis 1.8 vvt-i petrol engine. I did some inspection and noticed these things: When engine coolant temperature is still low, some ...
3 votes
1 answer
74 views

Radiator cap, / coolant flange and battery drainage issues

I wanted to enquire regarding some work that my mechanic carried out recently. All issues appear to be resolved now but I need to assess what happened at each stage. Apologies in advance for the long ...
0 votes
2 answers
49 views

Coolant, filling while draining

2020 F150 3.5L Ecoboost. Can I fill the coolant reservoir while draining coolant? The bottom of the radiator has a drain valve and I'm wondering why I can't set up the new coolant to flow into the ...
1 vote
1 answer
69 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
68 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 ...
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 ...
1 vote
1 answer
929 views

What happens if I mix green and orange coolant in a 2008 Chevy cobalt?

It’s a 2008 Chevy cobalt ss. I recently bought the car from a friend, and it sat for awhile before I bought it. I’m now trying to update all its needs, and I wasn’t sure what coolant was in it to ...
1 vote
1 answer
24 views

1983 Silverado Thermostat Housing Device?

I am working on installing a Holley Sniper EFI system and Classic Instruments gauge cluster at the same time on my 1983 Chevrolet Silverado K20 (with the 350/5.7L V8), and as such I am working out ...
2 votes
3 answers
91 views

Loud whirring from AC compressor fans

I've seen a wide range of posts related to this topic, which makes it really difficult to narrow down relevant information that is applicable to my case. I'm hoping to get a more definitive answer by ...
5 votes
1 answer
30k 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 ...
-1 votes
1 answer
39 views

Water is running out the front of my car were the radiator is can that be a hose ? 2006 vw beetle

When i put the fluid in it just ran right out
1 vote
1 answer
48 views

Mechanical checklist before roadtrip

I'm planing to make a 4 day long road trip throughout Europe beginning in Scandinavia all the way down to Spain in the middle of summer and need some car advice. I've driven around with a small ...
3 votes
1 answer
317 views

Coolant Reservoir keeps breaking Skoda Rapid

My car is Skoda Rapid 1.6 litre petrol engine, 2013 model. It has ran about 140000 Kilometres. Recently Smoke started coming out of my coolant reservoir and it was leaking not from the cap but from ...
0 votes
1 answer
772 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 ...
5 votes
1 answer
30k 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? ...
2 votes
2 answers
2k views

What are the advantages/disadvantages of more rows in a radiator core?

When purchasing a radiator, one spec that is provided is the number of rows in the core. I have a few closely related questions regarding these rows that are perhaps best to combine into this single ...
2 votes
2 answers
10k 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?
0 votes
1 answer
3k 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 ...
0 votes
0 answers
30 views

BMW engine cooling issue

So I have 316i E92 (N43), it was super fine with a minor hose leaking issue but that create more issues later and ended up replacing the radiator, water pump, and thermostat. recently when I drive ...
0 votes
0 answers
37 views

Chevy cavalier 1999 hot rod hot wired radiator fan

Long story short I have a chevy cavalier with a hot wired radiator fan and I noticed my car stays cooler in the winter.will my car be fine or a should I install a aftermarket thermostat for the custom ...
8 votes
5 answers
22k 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 ...
3 votes
4 answers
35k views

Why run distilled water on cooling system and flush it, is it necessary?

I'm trying to change coolant on my car. I saw a video of my car where they drained the existing coolant, added and ran distilled water, drained it and then finally added coolant. Why are they doing ...
18 votes
9 answers
507k 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 ...
3 votes
2 answers
7k 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 ...
1 vote
1 answer
597 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
47k 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 ...
2 votes
4 answers
595 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
294 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 ...
1 vote
1 answer
511 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
11k 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
16k 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
463 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
1k 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
21 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
116 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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