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Questions tagged [coolant]

An alcohol based fluid that is miscible in water and used to remove heat from the engine. Also see the [cooling-system] tag for related components such as the radiator and water-pump.

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Overheating engine after hard run?

I came across this paragraph in my car manual which states the following: "If the engine has been driven hard for a long period, the engine could overheat when it is switched off. Risk of engine ...
Aden's user avatar
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1 answer
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Why is there a MIN and MAX marking on a car coolant bottle?

I've always thought the minimum and maximum mark on the coolant bottle were quite pointless as it doesn't seem to make much of a difference to the function of the vehicle if I overfill a little bit or ...
Aden's user avatar
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3 votes
1 answer
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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 ...
mSatyam's user avatar
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Astra hatchback is boiling while driven short distance it boiling hot. Have taken out the thermostat but still no solution

Opel Astra water thank is boiling while driven short distance...taking lot of water in it...Have removed thermostat but still no solution...what might be a problem pls help
sicelo kunene's user avatar
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43 views

Mechanic detected low coolant level in car, says no leaks, could some of it have evaporated slowly over time?

I'm looking to buy a second-hand VW Polo 1.2 TSI, 2015, and with 31K miles on the clock (I'm based in the UK). Car has clean history, never written off and has passed all its MOTs without any ...
Nobilis's user avatar
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1 answer
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Car running hot but not overheating

09 3.5L v6 chevy malibu running hot. Radiator is new. Pressure test came back fine, so no leaks. Disappearing coolant that's never visible on the ground. My temp hand will rise just about to H in a ...
Jeff22's user avatar
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1 vote
1 answer
70 views

Is it safe to add OEM Renault green coolant to yellow coolant already present?

I want to fill up the coolant of my Renault Clio III because it's at the minimum level. I've bought a bottle of official Renault GLACEOL RX type D coolant. This new one has a greenish/yellow color but ...
wouter205's user avatar
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Low coolant sensor light doesn't turn on

My '04 Chevy Silverado recently had a coolant leak, and I never received a warning light or dashboard message. I tried unplugging the sensor and still nothing showed up. I tried plugging into a new ...
Geo's user avatar
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3 votes
1 answer
165 views

Replace radiator hoses with radiator when rust is present in coolant?

The radiator on a 20+ year old Jeep XJ recently bust. The fluid that came out was a rust colour, likely indicating that the radiator was at least partially filled with water instead of coolant (...
RockPaperLz- Mask it or Casket's user avatar
1 vote
0 answers
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14 Dodge Dart overheated

My son’s car ran hot a month ago and he said it lost power. Car was towed in radiator hose had came off they replaced that oil still looked good. The next day it ran hot again this time they replaced ...
Keisha McCombs's user avatar
3 votes
1 answer
54 views

Adding Pure Antifreeze to Coolant Tank

My car has a slow coolant leak from the radiator so I've been topping up with distilled water until I can afford to have it fixed. Colder weather is here, so I bought an antifreeze test to make sure ...
James's user avatar
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I have a '93 Pontiac firebird with a 5.7 i believe I have a coolant block in my engine. How can I fix itblock [closed]

I have already replaced thermostat, fan motor, and water pump, flushed out radiator
Angel's user avatar
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1 vote
2 answers
40 views

Safety of coolant question

I have a pretty nasty coolant leak in my car. I have to fill my radiator about twice a day. Anyways— because of the frequency that I have to fill my radiator I keep a bottle of coolant in my car. ...
James Singewald's user avatar
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35 views

2003 acrua mdx. Coolant leak between ac bracket and engine block dripping on corner of oil pan

This 2003 acrua mdx leaks coolant from the alternator and ac compressors bracket mounts and leaks between block down on the corner of the oil pan is there a freeze plug hole it could be leaking ...
Carla Chavez's user avatar
2 votes
1 answer
65 views

What's going on with the "temperature" part of this pressure gauge?

Ok, I think I finally understand the pressure bit of this gauge that came with this set of poorly documented hoses I got off Amazon. From 0 to 350, it's actually measuring pounds per square inch (PSI)....
lly's user avatar
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5 votes
1 answer
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Smoke coming from hood. Car turned off . wrong coolant was added..Why wont car turn on or what could be the issue

2011 Toyota Camry got an oil change and friend added coolant (dont think it was the right one). For a couple days when i would drive car would make loud noise. Drove it for couple days when one day ...
Lucy Aguilar's user avatar
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Coolant boiling but no overheating

Car has been fine, I just drove 3 hrs and when I got to my destination my coolant was boiling. what do I do? No overheating ever just had ac fixed an coolant filled. I have to drive another 2hrs ...
Olivia Winkelhausen's user avatar
1 vote
1 answer
88 views

Honda Civic: engine temperature changing quickly

Vehicle: Honda Civic 2004 1.4L Issue: According to thermometer, engine temperature changes from normal (about half) to maximum within seconds, and back to normal equally quickly. For example, it might ...
Mr. Engineer's user avatar
1 vote
1 answer
78 views

Coolant issue citroen c4

How do I drain the old coolant, which is mostly water, in my citroen c4 as I need to add 100% coolant due to overheating problems
neil webster's user avatar
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1 answer
126 views

Coolant level rises strangely!

Please read the full story before posting any comments or answers. Recently, I noticed some strange behavior in my car. Normally, when you check coolant level when cold then you drive your car and re-...
Nariman Asgharian's user avatar
3 votes
1 answer
535 views

Coolant tank drains too fast of Boxer 435

I have Peugeot Boxer van (435 onnicar) and its radiator coolant drains too fast(in one day, it's already empty). I.e. In the morning, if I fill up with water and at half of the day it's almost drain. ...
Phoenix404's user avatar
5 votes
1 answer
808 views

I put Adblu in radiator coolant tank in Peugeot Boxer 435 Onnicar

My coolant tank was empty and there was a plastic cane in the cockpit/dashboard, so I thought, it was water and I put some in the coolant tank. I am pretty sure it was less than 500ml. Driver is using ...
Phoenix404's user avatar
1 vote
2 answers
92 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. ...
Daniel's user avatar
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3 votes
3 answers
266 views

Coolant loss on VW, no visible leaks, no combustion leak detected

My 2006 VW Passat 2.0T is losing coolant in the past few months. I have added 2qt distilled water for a 7.6qt system. Less than 1000 miles driven. No visible leaks. No combustion leak detected (...
Ramyad's user avatar
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2 votes
3 answers
625 views

2004 Honda Civic OverHeating (Lots of Details and Pics to Help Diagnose)

I have a 2004 Honda Civic thats new to me and just started overheating. I first noticed a month or two after I bought it...I was idling in park for 45min or so when I noticed steam coming from the ...
NULL's user avatar
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-2 votes
1 answer
40 views

Added coolant repair to my car

I added coolant repair to my car. how long do i have to wait to add coolant into the tank? I’ve waited 20 mins after i poured the coolant repair in and the engine has cooled.
Donovan Peterson's user avatar
1 vote
2 answers
192 views

Dominar 400 2022 engine coolant level is little over max

I bought a new Dominar 400 2022. When I went for the first service, I observed that my coolant level was almost touching min. So I asked the service engineer to top that up. When he topped up, he put ...
Sandeep Pujare's user avatar
0 votes
2 answers
1k views

Truck will not reach operating temperature

My 2005 GMC SIERRA 1500 runs at about 180/190 degrees, and won't heat up beyond that. The thermostat and coolant temp sensor have been replaced, and I've been trying to burp the system with hit and ...
Ben Hopson's user avatar
2 votes
1 answer
2k views

Accidentally mixed orange and green antifreeze

My car has a slow coolant leak that mechanic hasn't been able to identify that takes about a year before there's an issue. It was running low and it was Christmas eve so I couldn't get Dexcool (I ...
Allan Schumacher's user avatar
2 votes
2 answers
238 views

Coolant leak visible from bottom two corners of radiator

My Mercedes 1998 ML350 is leaking coolant from beneath the radiator; at the bottom two corners of it. I am not a mechanic nor do I know much about cars but I did do some stuff on engines. A hose ...
JandyPilot's user avatar
2 votes
1 answer
117 views

What will happen to a Nissan if it was refilled with antifreeze meant for an Audi?

My friend had to replace the radiator in her Nissan Rogue and bought "blue" antifreeze as specified by her mechanic. After the job was done and she'd been driving for a few days, she went ...
cegodsey's user avatar
4 votes
1 answer
680 views

What are these pipes next to the carburettors?

As you can see in the pictures below circled in red there are pipes that are right next to the carburetors on this Abarth Tipo 240 v12 engine and Ferrari Lampredi inline 4 dohc engines (on the Ferrari ...
Timothy Scherer's user avatar
0 votes
1 answer
64 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, ...
Plain_Dude_Sleeping_Alone's user avatar
0 votes
1 answer
137 views

No power steering and coolant explosion

2008 Subaru WRX (Turbo) I was pulling in to my parking spot and lost power steering looked at gauges and coolant temp was hot then white smoke/vapour from under the hood. Turn car off, pop hood and ...
AM_Hawk's user avatar
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0 votes
1 answer
70 views

Can I help a failing water pump by removing the rad cap?

I'm on a trip and my water pump is starting to leak. The rad and overflow are a sealed system. If I left the pressure cap off the overflow will that help the water pump - less pressure? The temp on my ...
Ramon Holmgren's user avatar
1 vote
0 answers
65 views

Coolant bubbling on 82 K1500 6.2 diesel

Vehicle is a 1982 GMC K1500 6.2 diesel. It's got a 1987 6.2 diesel engine in it swapped by some previous owner (there were many). The truck has sat for a while since I didn't really have time to work ...
Dan K's user avatar
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0 votes
1 answer
130 views

Coolant refill technique

EDIT:- Make: Honda Model: Civic Year: 2007 (European version but shares many of the same systems as US version) Gen: mk8 Fuel: petrol I've just drained my coolant so now I have air in the system ...
jsstuball's user avatar
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1 vote
1 answer
703 views

Thermostat located in lower radiator hose, not upper

All the diagrams and videos online show the thermostat located where the engine meets the upper radiator hose. This makes sense because coolant flows from the engine to the radiator via the upper ...
jsstuball's user avatar
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0 votes
1 answer
249 views

Fan blade spinning very fast during acceleration

2008 Ford Ranger with the 3.0 Two months ago I replaced the fan clutch and the coolant temp sensor to address this issue. It did help a little, especially when the car was idling in the driveway, ...
Mikey Dee's user avatar
1 vote
1 answer
104 views

Overflow tank very active at end of drive

2012 Sonata Hybrid Car overheated. Shop said it had a blown head gasket. So I took the head off and had it machined flat. Put it back on with new gasket and new bolts etc. Car runs well. Temp gauge ...
John H's user avatar
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1 vote
1 answer
63 views

Why my car Over consume coolant .no any visible leak

I have added almost 4 liters of coolant today in my car.but over heating,boiling coolant and indicating low oil pressure alarm on the dashbod.what should be a problem
Meck mafie's user avatar
0 votes
1 answer
93 views

why is my 2006 Mazda MPV loosing coolant? but no leaks underneath

This minivan is constantly loosing coolant, but I don't see it going anywhere. Meaning I don't see any evidence of dripping or pooling underneath. Does it just evaporate? The rate of loss is, I may ...
user26270's user avatar
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0 votes
1 answer
379 views

Manual rotation of water pump before starting the engine. Is it necessary?

Today, I came across this article while surfing through Gates website: https://www.gatestechzone.com/en/news/2017-06-water-pump-replacement It mentions some points about installing a new water pump. ...
Nariman Asgharian's user avatar
0 votes
1 answer
195 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 ...
sjc678's user avatar
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0 votes
2 answers
143 views

Bubbling (not boiling) coolant

I have changed my car's thermostat (a month ago), and after driving for 30 minutes, the coolant starts bubbling (it doesn't seem to be boiling) because the temperature is in the norm (95 degrees ...
tmyn's user avatar
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0 votes
0 answers
90 views

Adding a ground strap from radiator to chassis

Does adding a ground strap from radiator to chassis reduce coolant voltage to almost zero? I have seen most cars have between 0.1 to 0.2 Volt of coolant voltage. I want to test it by adding a strap to ...
Nariman Asgharian's user avatar
0 votes
1 answer
233 views

Driving 2 hours without thermostat

Is it harmful to drive 2 hours without thermostat? I want to remove my thermostat just for ease of changing my coolant. I rinse my cooling system with distilled water 4 times. I fill up the whole ...
Nariman Asgharian's user avatar
0 votes
1 answer
94 views

If a diesel truck has been run dry of coolant and has then been refilled and then overheats and now has a blown head gasket when was the damage done

Only problem is with head gasket. No leaking hoses and truck was serviced two weeks prior.
Paul's user avatar
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0 votes
1 answer
48 views

Engine took a long time to warm up after putting chemical coolant flush in coolant reservoir

I have a 2006 Kia Rio 1.6L. Yesterday I put in chemical flush in the coolant reservoir since I’m flushing the system out on the weekend. I drove it once yesterday and the temperature increased as ...
Paul M. 's user avatar
0 votes
1 answer
93 views

Consequences of coolant phase change in radiator

Im a Freshman at my Institute in India. In the application form for the Institutes Formula Student Team, I came across these 2 questions, which I'm stumped by. Ive searched for the answers but cannot ...
Keyenke's user avatar

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