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how to replace coolant temperature sensor vw golf mkiv

by Casandra Tillman III Published 2 years ago Updated 2 years ago
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Where is the coolant temperature sensor located on a GTI MKV?

There are two coolant temperature sensors on the GTI MkV. One is located on the hose attached to the thermostat and the other is attached to the coolant distribution block on the left side of the engine. Replacing the coolant temperature sensors is a relatively easy job once you get to them.

How do I replace the coolant temperature sensor?

Replacing the coolant temperature sensors is a relatively easy job once you get to them. To get access to the upper sensor on the left side of the engine you will need to remove the engine cover or whatever after market air induction system you have. To get access to the sensor on the thermostat hose you will need to remove the alternator.

What is the part number for the VW MkIV sensor?

Most of the original sensors placed in the MKIV cars were faulty and instead of a recall, VW/Audi was nice enough to come out with a new revised part and let us pay for it. The revised part number is 059-919-501A and will have a green top as opposed to the original black or blue top that was in your car.

Where is the coolant temperature sensor located on a Honda Accord?

Click here to order! Replacing the coolant temperature sensor is a relatively easy job if you have a lot of patience. The sensor is located on the left side of the engine attached to the water pipe that comes out of the head. While it is not difficult to replace you will be working in a small and cramped environment.

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How do I replace my coolant temp sensor?

With the engine and coolant entirely cooled down, disconnect the battery. ... Remove any plastic engine covers. ... Locate the coolant temp sensor. ... Partially drain the cooling system, or perform a coolant flush, if it is due. ... Disconnect the electrical connector from the sensor by pushing on the tab and pulling the connector.More items...•

Where is the coolant temperature sensor located?

In most cars, the primary ECT sensor (ECT sensor 1) is installed near the thermostat in the cylinder head or block or on the thermostat housing. A second coolant temperature sensor could be installed in another part of the engine, or in the radiator.

Can I change coolant temperature sensor without draining coolant?

5. Do you need to drain coolant to change coolant temperature sensor? Open the radiator valve and drain about two to three quarts of coolant. You only need to remove enough to drop the level below the sensor.

What are the symptoms of a faulty coolant temperature sensor?

What Signs May Signal Your Coolant Temperature Sensor May Be Failing?Poor Fuel Economy. ... Irregular Temperature Readings. ... Black Smoke from Your Exhaust. ... Your Engine is Overheating. ... Your Check Engine Light is On.

Is there a fuse for coolant temperature sensor?

There isn't one per se. There will be a fused wire with voltage to the instrument cluster (your owners manual should indicate which fuse), but the temperature sensor is providing a variable "resistance to ground," which the temperature gauge in the dash is reflecting.

Does the coolant temp sensor control the fan?

On most modern cars, the cooling fan is controlled by the Engine Control Unit (ECU) which gets a signal from the coolant temperature sensor. If it's not working, the fan won't turn on when it needs to, which means the engine might overheat.

How long does it take to replace temperature sensor?

If you are doing it yourself it will take 4 to 5 hours. However if a skilled mechanic is doing it, it will take 2 to 3 hours only. Whether your car was running or not. If the engine of your car is running, then you will have to wait at least 1 hour before you start replacing the bad coolant temp sensor.

How often should you change coolant temperature sensor?

Often, the engine coolant temperature sensor must be replaced at about 100,000 miles. If you don't properly maintain the engine cooling system, the sensor could fail much earlier.

How do you test a coolant temperature sensor?

0:555:43How to Test an Engine Coolant Temperature Sensor - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe resistance at boiling temperature which is 212 Fahrenheit is supposed to be between 1760 ohms toMoreThe resistance at boiling temperature which is 212 Fahrenheit is supposed to be between 1760 ohms to two thousand three hundred and eighty ohms.

How do I know if my temperature sensor is working?

Submerge your temperature sensor in the hot water and wait a few seconds to let your multimeter take a reading. Write down your reading so you can easily reference it. A hot water reading should give you around . 25 volts.

How much does it cost to replace a coolant temperature sensor?

The average price for an engine temperature sensor replacement is between $150 and $193. Labor costs are between $82 and $105 while parts are between $66 and $88. Taxes and fees aren't included in the estimate.

Can a coolant temp sensor keep a car from starting?

The sensor will not cause a no start. It could cause a hard start and a rich or lean condition only.

What is the coolant temperature sensor?

The coolant temperature sensor is also referred to as the ECT. This sensor measures the temperature of your VW’s engine. The information that it gathers affects fuel delivery, ignition timing, and engine performance.

How does a coolant sensor work?

The sensor is partially submerged in the coolant. It sends the data that it collects to the engine’s computer. This allows your car to know if it is running too hot or too cold.

What happens if your coolant sensor fails?

A bad engine coolant temperature sensor can produce a lot of symptoms. When the sensor fails, your engine will no longer be as efficient. Below is a list of the most common symptoms that you may experience:

What to do if your Volkswagen has a mechanical coil issue?

If your Volkswagen is having any mechanical or ignition coil issues, bring it to any of our Locations for an inspection. Our technicians will determine if the issue is due to coolant temperature sensor failure. To Experience the Eurofed Difference, schedule an Appointment and a service manager will respond as soon as possible.

How to tell if a VW is a problem?

Anytime your vehicle’s computer becomes aware of a problem, it will try to inform you. This usually happens by triggering the check engine light. Many issues can turn the light on. Once your light illuminates, take your VW to a trusted mechanic They will be able to run a diagnostic scan to determine the exact issue.

Can VW overheat?

The cooling fans will not be turned on if the computer does receive the correct reading. This will cause your engine to overheat. Never run your VW with an overheating engine. When it overheats, immediately pull off the road and turn off the engine. Continuing to drive an overheating vehicle will lead to engine damage and possible engine failure.

Signs of a Coolant Temperature Sensor Failure in Your Volkswagen

Volkswagen models are known for their reliability, affordability, and stylish designs, so when something goes wrong with a VW, it is often completely unexpected. A coolant temperature sensor failure is a mishap that can occur in your Volkswagen, and while it can cause some problems it isn’t always drastically urgent to get it fixed.

Indications of a Bad Coolant Temperature Switch

One of the main consequences of a coolant temperature sensor that has failed is when your VW’s engine overheats as a result. So, looking for signs that this breakdown is about to occur is key to getting it fixed in a timely manner. Check out some of the most recognizable symptoms below:

Can you drive with a bad coolant temperature sensor?

Technically, you could drive wherever you want to, but you must remain cognizant that this sensor is not working as it should. Keep in mind that this system affects the cooling and utilization of fuel in your engine, so it’s best to have it checked out quickly by a certified technician who knows your car well and is certified to work on VWs.

Replacing a Faulty Coolant Temperature Sensor in Your Volkswagen

Replacing a coolant temperature sensor isn’t as simple as fixing it yourself with a YouTube video tutorial. Below is how a technician will properly replace a temperature sensor:

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