logo elektroda
logo elektroda
X
logo elektroda

VW T5 Fan Issue: Starts at High Speed with Ignition & Stays On While Driving - Solutions?

Kon.rtk145 19863 9
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 17278056
    Kon.rtk145
    Level 2  
    Hello. I would like to ask something like someone associates why as soon as I turn the ignition, the fans start at high speed, when I turn the ignition off, they stop all the time even while driving.
  • ADVERTISEMENT
  • #2 17278632
    Pawel wawa
    VIP Meritorious for electroda.pl
    You have a broken car, start with diagnostics and parameters, focus on the engine temperature that the controller "sees". Then we'll talk again.
  • ADVERTISEMENT
  • #3 17278641
    Kon.rtk145
    Level 2  
    I replaced the sensors and some other duperele and something is wrong, I think that there may be something in the electrical system But I don't know
  • ADVERTISEMENT
  • #4 17278654
    Pawel wawa
    VIP Meritorious for electroda.pl
    You will replace half the car and you will not repair the fault. The basis is reliable diagnostics. I wrote you what to check first.
  • #5 17290400
    Dawid W
    Level 15  
    Something reminds me that in these cars not one sensor is responsible for the operation of fans
  • ADVERTISEMENT
  • #6 17290466
    dizba
    Level 33  
    Dawid W you are right. The bumper has an outside temperature sensor.
  • #7 17520016
    aras3121
    Level 2  
    Hello .
    I had a similar problem
    Alternator failure is known bumper radiators for the picture and engine cushion with cushion.
    But to the point
    Folded everything except the bumper
    After switching on the ignition, the fans for max.
    The sensor diagnosis mentioned the same
    Photo again from everything to get to the sensor in the engine meter and like everything ok.
    Module measuring search etc. and nothing else.
    Until I took out the sensor that the bumper and connected and everything ok.
    4 hours wasted.
    But man learns his whole life.
    Who would have thought so immediately that a car without a bumper will not want to walk.
    And by the way, I saw on the net that the altenator is dismantled the entire front strip And all you need is a bumper and radiators and a paw from the pillow.
  • #8 21134852
    dawidluciuk76
    Level 1  
    Apart from the fans running, won't the air conditioning work through this temperature sensor?
  • #9 21134901
    ladamaniac
    Level 40  
    Could be, also check the A/C refrigerant pressure sensor. If it sees too high a pressure, the radiator fans will run and the compressor will not be switched on. Even if there are no errors, look at the parameters. The VW group has a measuring block that tells you the reason the compressor is disconnected, just not every tester shows it.
  • #10 21153619
    piotr32
    Level 14  
    aras3121 wrote:
    Hello .
    I had a similar problem
    The alternator failure is you know the radiator bumper to be removed and the engine bench with cushion.
    But to the point
    Put everything together except the bumper
    After turning on the ignition the fans to the max.
    Diagnosis sensor replaced and the same thing happened
    I took everything off again to get to the sensor in the engine gauge and seemingly everything ok .
    Module measuring, searching etc and still nothing.
    Until I removed the sensor from the bumper and connected and everything ok .
    4 hours wasted .
    But you learn all your life .
    Who would have thought from the outset that the car without a bumper will not go .
    By the way, I saw on the Internet that the entire front belt for the altenator are removed A just bumper and radiator and the paw from the cushion .

    I have come to the same conclusion - thanks, maybe you have a diagram or know where to connect the outside temp sensor (I have to do it short) to complete the repair of my car?

Topic summary

The discussion revolves around a VW T5 issue where the radiator fans operate at high speed immediately upon ignition and continue running while driving. Initial suggestions emphasize the importance of reliable diagnostics, particularly focusing on engine temperature readings. Users mention that multiple sensors, including an outside temperature sensor located in the bumper, could influence fan operation. A user shared a personal experience where a faulty bumper sensor caused similar issues, highlighting the need for thorough checks of all related components. Additionally, the air conditioning system's functionality may be affected by the temperature sensor and refrigerant pressure sensor, which should also be examined for proper operation.
Summary generated by the language model.
ADVERTISEMENT