206 temperature gauge

Forum friends, in other brands of cars I have used before, the temperature would reach 90 and stay constant, but in this car, the fan turns on between 93 and 95, while driving, it drops to 80, stops and starts, etc., and it doesn't stay constant. What is the reason for this? What can I do to keep it constant or turn the fan on at 90? By the way, I think there are two fans, the first one is on, so there is no problem.

Hello, in hot weather and heavy stop-and-go traffic, especially in Istanbul, it can sometimes exceed 90, which is normal. It quickly decreases afterward, but if it exceeds 95 and doesn't decrease, it can be investigated as a problem. Otherwise, there are no problems. I've been using it for 10 years and have never had any overheating issues, thankfully. As I said, 206s can sometimes exceed 90 a little.

206 vehicles and most PSA vehicles have an 89-degree thermostat. When the coolant temperature reaches 97 degrees, the first-stage fan is activated, and when the coolant drops to 93 degrees, the fan stops. If you have a healthy cooling system, your vehicle will operate at these temperatures. If you pay close attention to the needle, you can easily tell when the fan is on and off in 206 vehicles because you can see the temperature directly on the needle. For example, in VAG vehicles and many other brands, even if the temperature is 86 degrees or 105 degrees, you'll see the needle always stay at 90. For example, I drive a VW Golf, and the fan turns on at 98 or 99 degrees. I connect it to the car's ECU and monitor it, but the needle always stays at 90. I recently replaced the thermostat in my Audi A4. The thermostat was 105 degrees, but when the ECU is at 105 degrees, the needle always stays at 90 degrees. It was fixed. The engineer who built the car said something was wrong with the car and the temperature increased significantly. I don't know this figure; I'm just saying it hypothetically. For example, if something's wrong after 115 degrees, the temperature gauge starts to exceed 90 to warn you. If you continue, it starts giving a stop warning. But on 206s, the temperature gauge you see is the same as the EC value. So, you can see a 5-degree increase or decrease instantly. Now, for example, users who have driven other brands and constantly see the temperature at 90 degrees when they own a 206, they think there's a problem and go to a repair shop. Some smart guys, knowing there's nothing wrong, say there's a problem here, there's a problem there, and actually scam people. You leave the car, then they remove the gauge, put the temperature gauge back in 5 degrees lower, and tell you they've changed this, done that, etc., and take a fortune. Some even take everything apart for nothing, trash the good parts, and take a fortune from you. and at the end of the job they say there is nothing to do, you will use it like this, they send them back. If your vehicle is running between 97 and 93 degrees there is no problem. If it is running at lower temperatures there is a strong possibility that the dial has been previously repaired and the person who installed it did not install the needle in the correct place. If it is running at very hot temperatures the same problem may occur. For this you can go to any mechanic or technician and connect to the vehicle ECU and see the actual temperature from there you will see that the fan turns on at 97-98 degrees. At the same time you can check the accuracy of your needle.

I had a similar problem. In heavy traffic, the temperature would go up to 98°C and then the fan would turn on. On long trips, it would drop to 70°C. We replaced the thermostat. No matter what, it would stay at 90°C or so, then the fan would turn on and then it would reset to 90°C. The thermostat might be stuck open.

[QUOTE=ErcanÖzcan]I had a problem like this. In heavy traffic, it would go up to 98 and then the fan would turn on. On long trips, it would drop to 70. We changed the thermostat. No matter what, it would stay at 90 or so, turn on the fan, and then it would stay at 90 again. The thermostat may be stuck open.[/QUOTE] On 206s, the line after 90 represents 100C degrees. If the thermostat stays open, the temperature of the vehicle drops to 70-80 degrees at steady speeds on a flat road. Since the cold water in the radiator goes to the block because of the headwind without the need for a fan, the water in the block cannot maintain its temperature. This causes the heater not to heat in the winter months, more fuel consumption due to the low temperature and more wear on the engine. Sometimes, even if quality brands are preferred, there may be situations where the thermostat does not fully open or close completely. While your vehicle is idling, even if the thermostat remains open, after a certain period of time the water in the radiator cannot cool down, so the vehicle needs the fan for cooling. Since the fan is activated at 97-98 degrees, you will see these temperatures on the needle. In short, if it does not stay at 92 when it is idling until the fan is turned on, the needle, temperature sensor, etc. It may not be showing the temperature correctly. Berkay Erdinç2023-05-16 14:04:27

As you said, it does not stay at 92, it goes up to 98, the fan turns on and the temperature drops.