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  1. 02-10-15, 09:47 #1
    kildangan_kid
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    525d engine temp

    Hi I'm Wondering could anyone shed some light on this. I replaced the thermostat on my e39 525d last week but the car still struggles to get to temperature. If its left ticking over for a while it does eventually, but on the motorway or im [/align]around 70mph for a while it drops back down around the quarter mark :huh: is there another stat that needs to be changed or was it just a dodgey stat ? With the cold months coming in I don't want it running cold. Any help appreciated thanks.[align=justify]
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  2. 02-10-15, 10:05 #2
    Dave
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    525d engine temp

    Is in manual or auto?
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  3. 02-10-15, 19:38 #3
    Venom
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    RE: 525d engine temp

    Additional air cooling going on for some reason when in motion.
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  4. 02-10-15, 20:17 #4
    Venom
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    RE: 525d engine temp

    The other thing that occured to me is a dodgy or on the way out temp sensor on the rad.
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  5. 02-10-15, 20:36 #5
    Dave
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    525d engine temp

    If it's an auto it has an EGR thermostat which would explain it
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  6. 03-10-15, 00:38 #6
    kildangan_kid
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    RE: 525d engine temp

    Sorry no it's manual. It's really wrecking my head now. Took a spin into limerick on the motorway this evening, and stayed a notch below the quarter. It's running very cold. Could that be diagnosed from a plug in venom? Thanks for the replys lads I'd really love to get this sorted.
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  7. 03-10-15, 03:16 #7
    Dave
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    525d engine temp

    Where did you buy the thermostat? Is it genuine. I had the same issue on mine, replaced with a genuine thermostat and never had the problem again. Same on the M5
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  8. 03-10-15, 07:37 #8
    kildangan_kid
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    RE: 525d engine temp

    I can't remember the brand but I'm pretty sure its not genuine. Got it in the local motor factors. Where would I be able to pick up a genuine one?
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