Temp gauge

Discussion in 'Tech/Mech General' started by nunny666, Jun 15, 2014.

  1. nunny666

    nunny666

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    Took the motorhome out today noticed my temp gauge stayed at zero . Could this be a thermostat or sender unit , ime in a 1994 fiat hyma , thanks in advance
     
  2. nunny666

    nunny666

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    Stupid phone hymer
     
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  3. crimbo

    crimbo Read Only Funster

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    Possibly the sender unit but I doubt its the thermostat as you would still get a reading albeit a little lower than usual. Have you checked all relevant fuses.
     
  4. nunny666

    nunny666

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    Cheers will double check tomorrow , thanks for reply appreciated
     
  5. ramsthom

    ramsthom Funster

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    On older cars the way to check if it was the sender unit or gauge was to disconnect the lead from the sender unit, switch on ignition and touch the lead to an earth point nearby. If the gauge starts to read or goes into the red section the gauge is ok. If no reading its the sender unit or the lead to the sender unit. If the lead is ok I would think it should give 12 volts with the ignition on. Hope this helps
     
  6. Daedalus

    Daedalus Funster

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    Temperature guage

    Sorry, I think you've got that wrong - when you 'earth' the sender lead, if the guage immediately goes into the high (maximum) area, then the guage and lead are okay and the fault lies with the sender unit itself - no reading on the guage and it's either the guage or the lead that's gone duff.

    In my experience it's usually the sender which goes duff, but if you can do the simple check it will eliminate one or the other. A duff thermostat would normally give at least some indication of the engine temperature - if it failed in the closed position, the engine would soon overheat and show on the guage quite quickly - if it failed in the open position, it would cause the guage to read a much lower than normal reading. A zero reading, to me, indicates the probability of the sender unit having failed.

    HTH

    Daedalus
     
  7. nunny666

    nunny666

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    If it's the connector in the lead or the lead how hard are they to get hold of as I don't think their a spade connector are they , thanks for everyone's replies ,
     
  8. yodeli

    yodeli Funster Life Member

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    Nothing to do with your prob even I will watch all the answers with great interest!


    I know exactly what you mean ... mine has to deal with 2 main languages and keep mixing them up , changing the words when I think it's all settled and not for the best indeed!

    BTW you got a HYMA too on your profile LOL


    Amicalement,

    Frankie:Smile:
     
  9. nunny666

    nunny666

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    Oh bludy hell lol stupid phone cheers buddy
     
  10. nunny666

    nunny666

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    Can anyone point me in right direction as to where temp gauge sender unit would be on my 94 fiat ducato Hymer , can't seem to see it , thanks
     
    Last edited: Jun 18, 2014
  11. Daedalus

    Daedalus Funster

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    Right hand side of the engine towards the top, just above the gearbox housing. There will be rubber water pipes going to it as it's also the thermostat housing. Be aware there are two sensors on the housing, one is the temperature sender and the other is part of the cooling fan(s) switching system.

    The cooling fan sensor switch should (?) have the larger cross section and will probably have two connectors on it whereas the temperature sensor will only have one.

    HTH

    Daedalus
     
  12. nunny666

    nunny666

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    That's great thanks a million buddy really appreciated
     
  13. nunny666

    nunny666

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    Lol am I blind or is it hard to see as I still can't bludy find it
     
  14. nunny666

    nunny666

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    Can't see anything with wires attached
    [​IMG]
     
  15. nunny666

    nunny666

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    Is has wires to it but looks like some sort of stat
    [​IMG]
     
  16. nunny666

    nunny666

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    Still can't find it , befining to think its been removed altogether
     
  17. nunny666

    nunny666

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    Should it be located in this opening on right side of engine block ? As I can't find anything by thermostat housing ? Thanks
    [​IMG]
     
  18. nunny666

    nunny666

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    Can someone with fiat ducato please take a picture of where their temperature sender unit is please , this is really getting to me now , thanks
     
  19. B-well

    B-well Funster

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    this looks like it should be the one, if it carries water to the thermostat.
    .
     
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