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Cooling System

Related articles

P0494 OBD-II Trouble Code: Fan Speed Low
Diagnostic Trouble Code (DTC): P0494 P0494 code definition If the PCM has detected a voltage reading that is too low from the electric cooling fan control circuit, the P0494 code will...
How To Keep Your Car From Overheating
Monitoring your coolant level, turning the A/C off in very hot weather, and regular inspections will help you avoid having an overheating car.
How to Quickly Cool Down a Hot Car
Knowing how to cool off a hot car that has been sitting in the heat and sun can save you the discomfort of having to sit in...
How Long Does a Cooling Fan Relay Last?
The purpose of the cooling fan relay is to pull air through the A/C condenser and the radiator. Most vehicles have two fans, one for the radiator and one for the...
How Long Does a Cooling Fan Resistor Last?
The purpose of the cooling fan resistor is to remove heat from the engine’s coolant and from the A/C refrigerant. The resistor does this by drawing air through the radiator and...
How Long Does a Coolant Reservoir Last?
The coolant reservoir is a tank located in your vehicle that holds the overflowing coolant that...
How Long Does a Connector Hose Heater Control Valve Last?
The hose heater control valve opens and allows hot coolant from the engine to blow into the heater core. After the vehicle gets to the correct temperature, the thermostat...
How Long Does a Coolant Recovery Reservoir Last?
The coolant recovery reservoir is both an expansion tank as well as a coolant recovery tank. In modern vehicles, the radiator has no cap so it has no upper tank for...
How Long Does a Coolant Tube Last?
The coolant tube, or hose, carries coolant to and from the engine in your vehicle. First, the coolant tube removes the hot coolant from the engine and brings it to the radiator...
P0495 OBD-II Trouble Code: Fan Speed High
Diagnostic Trouble Code (DTC): P0495 P0495 code definition The P0495 code is stored when the PCM has detected a voltage reading that is too high from the electric cooling fan control...
How to Replace a Cooling Fan Resistor
The cooling fan may not work at all speeds if the resistor is broken. If the engine overheats or the fan never turns off, the resistor may be faulty.
How Do I Prepare My Car for Summer?
Summer's heat, dust, and stop-and-go traffic will take their tolls on your vehicle. Follow these tips to ensure optimum wellness of your car: Air Conditioning: Have your air...
How to Replace a Car Surge Tank Hose
Replacing a surge tank hose involves working on the coolant system, which can burn you when the engine is hot. Stay safe by waiting for it to cool.
How to Flush Your Cooling System
Flushing the cooling system is part of every vehicle's scheduled maintenance. This procedure is usually required every two to four years, depending on the vehicle. It is important...
How to Calculate the Concentration of Coolant in a Car
A car cooling system works to transfer heat from the engine. Check antifreeze level and condition, and mix coolant with water to prevent overheating.
Why Cooling System Repairs on a European Car Can Be Tricky
Repairing a cooling system, such as if there is a leak, can pose different obstacles. Many repairs may involve finding the radiator of the system.
How to Replace a Cooling Fan Relay on Most Vehicles
Cooling fan relays fail when the radiator cooling fan no longer receives an electrical signal. A broken fan relay means the radiator cannot cool down.
How to Remove and Replace a Heater Control Valve
The heater valve is integral to a vehicle’s cooling system. Replacing one requires a new valve, some basic tools, and fresh coolant.
How to Replace a Car Air Conditioning (AC) Compressor
If the AC compressor fails, it can cause the air conditioning system not to work. This article covers how to locate, remove, and install a compressor.
How to Replace a Condenser Fan Relay
A condenser fan relay operates the fan that removes heat from the engine. If faulty, it will not allow the A/C to blow cool air or function at all.

Related questions

Question
How difficult is it to replace the radiator in a 07 X-Type Jag?
In order to verify the leak you will need to have the cooling system pressure tested to see if it is just a hose or the radiator is leaking. This way you do not replace good parts. You may have...
Question
Location of thermostat.
Hello, thank you for writing in. While it is strange to think the thermostat can be located on the lower radiator hose, this is common practice for some manufactures. The concept works exactly the same. The coolant entering the radiator...
Question
My car starts to overheat when I run the AC and when it's only an idle mode are you put in a new water pump and in a new used engi
You have two cooling fans and both should be running when the a/c is turned on. If the fan on one side or the other does not come on then have the fan checked to see if the fan is...
Question
My reservoir is empty every two days but my radiator is still full.what happens?
If you have to keep adding coolant to the reservoir then you have a leak somewhere and would need to have the cooling system pressure tested to locate the leak. If there is no leak externally then you may have...
Question
Found Casting sand in coolant overflow, sand left from engine block casting, what is best "repair"?
The only way to try and flush out all the sand is to drain the cooling system and flush out with fresh water until the system is cleaned out the best as possible. Even after this you will need to...
Question
need to find bleed point for coolant on 2001 lexus gs300
Hello, thank you for writing in. There is not a bleeder valve on the cooling system, as the newer models are designed to "self bleed". Your owner's manual can confirm this, and give you more information on how your specific...
Question
My cooling fan has been running non stop for awhile now it seems to be off track or dying out and making a noise. Do I need to re
The radiator fan is computer controlled and you would need to have the computer scanned to see if the fan is having a computer or sensor problem or the fan relay is stuck in the on position. The fan has...
Question
can a fan motor that is going out cause enough vibration to loosen bolts securing it to frame causing fan to bite into radiator?
The fan bolts would not loosen on their own and may not have been tightened up all the way. I have seen the fan blades come off and damage the radiator but never a fan bolts coming loose. They were...
Question
Van overheating when idle and ac is on
You need to open the hood and with a/c on and engine running see if the cooling fans are coming on. If not then system will need additional diagnosis to see if fan motors are bad or the control system...
Question
i smell coolant and found some on top of motor
Hi Marcel. Thanks for submitting your question today. If you found coolant on top of the motor, then it is more than likely that the coolant inlet hose attached to the top & side of the motor either has a...
Question
ran hot belt broke and my fan is bent
You may need to replace the bent fan or it will be out of balance and damage other components. The belt will need to be inspected to see why it came off. You may have a seized component like the...
Question
Temperature gauge goes up and down
You're probably low on coolant. Filling the reservoir doesn't really do the trick for filling the cooling system. There is probably air trapped in the cooling system that needs to be bled out. You may be able to do it...
Question
Green fluid leaking in the rear of car
You have a leaking rear a/c heater system core or hose for the rear unit. You will need to keep the rear heater turned off and keep coolant in the engine full to prevent overheating the engine. Have the cooling...
Question
Can you damage your Malibu 2012 car if you drive with a faulty thermostat?
There are two ways your thermostat can fail. Either it is sticking open, and the car is not coming up to temperature, or it is sticking shut and the engine is running too hot. Either one can cause problems, but...
Question
My car was wrecked on the 10th in the front end and it now runs hot today was the first day it smoked from the hood. What is it?
You should have the cooling system checked for proper operation. Your cooling fan or its control circuit may have been damaged in the accident. It may not b coming on and cooling the engine.
Question
Hello! I was running low on coolant so I added water until I could buy some. Now that I bought coolant, can I add it on top of the
If you have been running low on coolant and been adding water instead of coolant then you do not know the coolant level of protection for anti-boil or anti-freeze and should replace all the coolant fluid in the car. If...
Question
heater core bypass hoses stuck
You should disconnect both hoses from the heater core and connect the two hoses together with a piece of pipe or cut off a piece of the heater core pipe to use to connect the two hoses together.
Question
Heard Popping Sounds After Key Removal
If your truck has automatic climate control, what you heard could have been the air diverter doors moving back to their default position. We used to joke about some cars sounding like there was a little guy inside the dashboard...
Question
Bypassed my heater core and refilled my reservoir tank for coolant checked it after two days it's getting low again
I can't help but think that there is a little more back-story here. But I presume you bypassed the heater core because you had a leak inside the car. That's something you can do if you don't need heat of...
Question
my coolant leaks. I have seen a little on the ground, but the car has never overheated. what does this mean? thank you in advanc
Without more specifics on the location of the coolant leak I would suggest having the cooling system pressure tested to locate the leak. You may have a water pump starting to leak. This will get worse and may start to...

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