Audi A3 2001 1.8T AUM 180 - Temperature Rises to 95°C After Multiple Parts Replacement & Flushing

Hello. I looked through a few forums. Dozens of topics, hundreds of posts and no one can help or there was no similar problem.

Car after replacement
3 thermostats (currently fitted with s3 Opening temp. 82 ')
rings,
acetabulum,
complete head - valves sealed.
water pump, (gives good pressure)
temperature sensor with ASO.
Sensor in the radiator with ASO
New cooler
Flooded Liqui moly 5w40

The system was rinsed with caustic soda, then with some specificity for the coolers. Flooded new fluid.

There is LPG, but I only get the car on gas.

Jade in a cold car, heats up to 83-84 I see on the climatronic that he releases the thermostat, the temperature drops to 79 then soars to 83 and holds 83. But after some time, with further driving, it increases gradually and becomes 95. On the previous thermostat with the opening temperature 90 was the same. Auto 2,000 km after renovation. If I put him in a little bit, he will run in 2 gears and the temp goes to 97-98. At the stop I watched the windmills and even at 100 'they do not turn on. The windmills are checked, I gave a jumper on the plug and both gears are working.

Receipts are falling, anyone will help?

PozioYPozio wrote:

Receipts are falling, anyone will help?

But what because no problem is described?

This engine is supposed to hold 90 ', I drove two identical cars with the same engine code designation especially to exclude "that it may be so" as others write.
BUT NO, it has to hold 90 degrees, as it was in both of these cars. I even asked my friends to "burn" the car from 50 to 180 and the temperature jumped up to 91-92.
So the question: why does my engine after the renovation work at the operating temperature of 95-98 and the fan does not turn on even at 100.

PozioYPozio wrote:

So the question: why does my engine after the renovation work at the operating temperature of 95-98 and the fan does not turn on even at 100.

Ok, what is the temperature of the radiator and the engine?

To determine this, you would have to attach a sensor to the system in front of the radiator, I do not have such a possibility. and there is no point in measuring with the meter and applying it to the call. the temperature at the radiator is definitely lower, because when I keep my hand on the hose at the engine block, and when I keep it on the same hose, but at the entrance to the radiator, it is less hot. and the outgoing return from the radiator is about 60 degrees.
I don't believe the third thermostat in the row is down. the more that while driving, as I wrote, I can see the indications that it opens.

I thought maybe to drill a hole in the thermostat with a 1.5mm drill and then see.

but I wanted to consult here. I am not a layman and I do not ask about any nonsense, but I am looking for professional help

PozioYPozio wrote:

I thought maybe to drill a hole in the thermostat with a 1.5mm drill and then see.

There is no need because when the thermostat opens, it is a circuit and the cooler should be warm.

With today's frosts, it is unrealistic to turn on the fans.

And what temperature does the ECU see. Are you suggesting reading on the meter?

I know all this, but something is wrong. I heated it to 102 in the garage and the fan did not turn on. The engine is hot, the heat cooler, the hoses, the cooler - the block is warm and the fluid does not run enough to keep around 90 and the fan does not turn on. I don't know, maybe there is something physically sitting in the cooling system and blocking the flow.

I look at the climatronic on channel 49 which matches the connected vag. I do not want to heat it higher because it is on the way

Is there a sensor that activates the fan on the lower radiator hose or in the radiator itself? Maybe here is the problem, what temperature for turning on the first speed of the fans?

PozioYPozio wrote:

I look at the climatronic on channel 49 which matches the connected vag. I do not want to heat it higher because it is on the way

But the climatronik has nothing to say there.
Look at the temperature readings on the ECU.

Second, you can activate vag fans.

Added after 2 [minutes]:

Don de Leon wrote:

Maybe here is the problem, what temperature for turning on the first speed of the fans?

But today you had to pound at 4000 rpm for 10 minutes for the fan to turn on.

Strumien swiadomosc... wrote:

But today you had to pound at 4000 rpm for 10 minutes for the fan to turn on.

More about whether the first gear starts at 102 or 105. The second thing is whether the sensor indications to the ECU are correct, often these sensors fail.

95 is the normal engine temperature.
The counter will show you 90 when the engine temperature is in the range 70-95.
The fans start at 105.
Take into account that the sensor has some tolerance and 5 degrees for the motor controller does not matter.
In my opinion it's ok and nothing to worry about.

I also thought so from the beginning, but it bothers me since I drove with other cars with the same engine and I saw a reading of 90 degrees. As I wrote, I set up a thermostat 87 temperature UNDER COMPASS READING from ECU 95. I put on a febi thermostat with s3 opening temperature 82 'reading on ECU 95. I just took out the thermostat that is currently sitting and I will take all 3 that I had before and try to pour boiling water.


@@@ No, I don't believe you, none of the 3 opens flooded with boiling water

And there is no Wahler in the warehouse?

Found the Wagler. I set it up and it seems to be ok. But come on 3 thermostats in turn lime.

He doesn't want to lecture anyone but he has to hold 90 and that's it. Anyway, as it is right now when the thermostat opens correctly

Hello, I have a problem with the Audi A3 S3 1.8t AGU.

Both fans died from the beginning, the temperature was boiling to over 110 degrees, according to VAG. The indicator did not show carbon. So 2 new fans were installed, a thermal sensor, a temperature sensor and a thermostat. The car still reaches a temperature of about 105 degrees and only the fan is turned on, then there is no exchange of 3 temperature sensors on the indicators, then the same. Cables checked from the sensor to the meter ok. And sometimes it does not show fuel. Maybe someone has an idea what else to do.

Counter released.

Okay, I plugged the counter with the audi a6, only the blue cube and the temp does not show it is possible that 3 sensors are released (2 new)

In such cases, I put the second one, checked and they flicker.

Thanks, I diagnosed the meter released and in addition 3 sensors