Coolant indicator playing up

Discussion in 'Tech/Mech General' started by estcres, Jan 19, 2013.

  1. estcres

    estcres Read Only Funster

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    I have a 2005 Ducato 2.8JTD and on Tuesday filled up with Diesel at a French Aire.

    After that I noticed the Coolant Indicator Gauge was showing maximum heat and was in the Red area.

    I stopped straight away and checked the engine system but everything was OK and the coolant was very cool. (because of the cold driving conditions)

    Since then I have driven from Northern France to the Spanish border with no problem apart from this Coolant Gauge which continues to either show maximum temperature or just fluctuates between Cold and Hot.

    I think it may be an electronic problem caused by filling the Diesel tank to the brim.

    Not too worried at the moment but would appreciate any thoughts on this matter.
     
  2. hilldweller

    hilldweller Funster Life Member

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    Impossible.

    More likely a corroded connector on a sensor. Look around your radiator or anywhere with cooling pipes for a screwed in sensor with connector, remove, examine, re-fit. Pray.
     
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  3. GJH

    GJH Funster Life Member

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    Have a word with ShiftZZ. He's an expert on Ducato temperature gauges.
     
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  4. rainbow chasers

    rainbow chasers Read Only Funster

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    It won't be related to the diesel. You either have a short on the connector, possibly caused by dirt, rust or water/ice - or the sensor itself is faulty - which isn't uncommon, especially in motorhomes with limited mileage per year.

    Sensors are cheap and simple to replace, connections can be removed and cleaned. I would clean the connections first and see if that makes a difference.

    Before all this happened, was the temp gauge over say the last few months static, or did it fluctuate when under load?
     
  5. FM02MZO

    FM02MZO Funster

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    An easy way to check the temperature sensor, is to remove the wire from it, with the ignition on and the temperature gauge show drop to zero, if it does the sensor is faulty.
     
  6. aba

    aba

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    provided you got the wire off the right one in the first place.
     
  7. SIFTA SAM

    SIFTA SAM Read Only Funster

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    Previous postings may be of help:-

    www.motorhomefun.co.uk/fiat/11523-tempeture-gauge-fiat-ducato.html

    Sam
     
  8. ShiftZZ

    ShiftZZ Funster Life Member

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  9. dave newell lvs

    dave newell lvs Trader-Vehicle Services

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    Sometimes its the sender and sometimes its the instrument panel. Shifty was unfortunate inthat his was the panel but I've cured several dicky temp gauges by replacing the sender unit on the engine. There are two senders side by side on the right hand side of the lump. Make sure you get the gauge sender not the ECU sender. Its a bit fiddly to get at but doable and the sender unit is not particularly expensive if you get it from a factor.

    D.
     
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