Vag Com indicates that the engine coolant temperature is not sufficiently warm to use the TDI Timing feature. I briefly restarted a hot engine after it had been sitting for about an hour, but then just sat there again as it had been sitting for a half hour. The car runs fine, the heater produces heat, and the needle does not move. The temperature gauge on my dashboard is no longer reading. On the new sensor, there was already a new o-ring, and it went in without a hitch. Previously, the CTS was housed in a square electrical plug similar to those found in the 1Z, AHU, and early ALH. If you place the horseshoe clip in, you can now relax while removing the electrical plug. Before wiring, the sensor should be removed first. Examine the engine to see if there are leaks. It is best to check the coolant before adding it. You might have to fish out your old O-ring just like I did, which will result in a few cups of coolant being lost. Remove the old sensor from the plastic ‘C’ clip. Pressure can be released by opening the coolant reservoir’s cap. The engine cover and accordion hose should be removed between the MAF sensor and the intake downpipe. As a result, the sensors were more prone to failure than the thermostat. There was an issue with the temperature gauge needle in 2000 Golf TDIs that didn’t reach the center 190 mark. If you remove enough of it, it will only take a few inches to drop the level below it. As a result, the fuel mixture is vibrant, which means that the fuel is not adequately combusted within the chamber.Ĭan You Replace Coolant Temp Sensor Without Draining Coolant?ĭo you need to drain the coolant before changing the temperature sensor on the coolant? Open the radiator valve and drain two to three quarts of coolant. The computer will be perplexed and will need to over-fine the fuel mixture as a result of this action. When coolant temperature sensors fail, they can transmit cold signals to the computer. What Happens When The Coolant Temperature Sensor Goes Out? When the engine consumes more fuel than normal, the fuel mileage is reduced, and black, sooty smoke is produced. Overheating is possible as a result of fluid leaking from the coolant sensor into the engine. If the engine cooling system fails, overheating can occur, cylinder heads gasket failure can occur, engine blocks can fail, or cylinder heads warping can occur. When the vehicle’s sensor fails, inaccurate information is sent to its computer, causing it to react to incorrect operating conditions. This device continuously sends coolant engine temperatures to the engine control unit and the temperature gauge. In an engine block or cylinder head, the coolant temperature sensor is exposed to coolant flow. The temperature gauge should now be working properly. Reconnect the negative battery terminal, and start the engine. Install the new sensor in the same location, and use the screws to secure it in place. If coolant does spill, clean it up immediately. Carefully remove the sensor, being careful not to spill any coolant. Use the Phillips head screwdriver to remove the two screws that hold the sensor in place. It’s located on the engine block, near the thermostat housing. Then, locate the coolant temperature sensor. This will prevent any electrical shorts from occurring while you’re working on the sensor. Begin by disconnecting the negative battery terminal. You’ll also need a bowl or catch pan to catch any coolant that may spill out when you remove the old sensor. To replace the coolant temperature sensor, you’ll need a new sensor, a Phillips head screwdriver, and a flat head screwdriver. This is a relatively easy task that can be completed in about an hour. If your Honda Civic has been overheating, or if you’ve noticed that the temperature gauge isn’t working properly, then it’s likely that the coolant temperature sensor needs to be replaced.
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