Hello! I bought a 93 Audi Quattro 2,6L V6. Since the radiator temperature indicator did not work, I thought it was due to a cold soldering point in the amarture board. Everything soldered=> problem not solved. Now I sprayed up the temperature sensor (4-pole) contact spray. Result: After about 20Km drive the pointer goes up to 100 degrees (motorway), when I drive slowly it goes back to 90 degrees. I honestly don’t know what it is. Is such a behavior known to you ? Luis!