E28 528 Temp guage/ coolant temp sensor
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  1. #1
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    Temp guage/ coolant temp sensor

    Sorry, me again but this has been bugging me for a while

    When i got the e28 it had the no rev counter, temp gauge etc problem. So ive never known how hot this one runs..

    I changed the cluster batts and its all good apart from the tempo gauge sits not far above the end of the blue cold bit. Ive thought i did something wrong when i was in the cluster as the engine gets a good temp and good hot heater

    Ive picked up some parts i had including 4 clusters as well. Theyre all dead apart from one and thats reading the same temp

    I know some e28s can run a bit cold but its really low i think

    Im thinking the 2 temp gauges on the 2 clusters cant both be bad and im thinking of changing the coolant temp sensor..

    Would that be my next move do you think or im i forgetting something?

    I dont want to boil the thing unwittingly

    Cheers, watty

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    Have you got a thermostat you can use to check the actual temperature of the coolant? I'm sure you can find out what they are suppose to run at on the internet.
    If you can't do that you can get a rough idea by removing the stat and seeing if its stuck open and what it does when you put it in some hot water, I'd guess it will be about 90c so just before the water boils it should open.

    That should give you some clue as to if its actually running cold or its the sensing side of things before you spend the money.

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    watty (15-10-2012)

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    Last edited by e36coupe-328; 15-10-2012 at 19:11.
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    Thermometer it is then

    Thanks guys and cheers for the link mate

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    Yea, thats what I meant

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    Hey @watty did you ever solve this problem?
    I have the same issue with my temp gauge on my e28 535i, although the rest of the dials are working ok (other than the fuel gauge shows full even when empty).
    The temp needle rises after a few minutes of driving but stops at the right hand side of the blue on the dial and sits there for the rest of my journey...

    Doesn't show any signs of overheating, but would be re-assuring to know she's running at the correct temperature.

    EDIT: sorry for resurrecting an ancient thread!

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    [QUOTE=Jackmcl;129252]Hey @watty did you ever solve this problem?
    I have the same issue with my temp gauge on my e28 535i, although the rest of the dials are working ok (other than the fuel gauge shows full even when empty).
    The temp needle rises after a few minutes of driving but stops at the right hand side of the blue on the dial and sits there for the rest of my journey...

    Doesn't show any signs of overheating, but would be re-assuring to know she's running at the correct temperature.

    EDIT: sorry for resurrecting an ancient thread![/QUOTE

    No i never did mate BUT it never overheated and over the years ive read about 1 or 2 that did that

    Also the bloke that bought mine drove it 500 miles home and the guage stayed just where yours is and ran perfect

    My next move was gonna be a replacement known working cluster to be sure after id checked the coolant temp with a thermometer

    An e28 Bentley manual would be very handy

  11. #8
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    I'll likely wire in a simple temp gauge into one of the coolant hoses to keep an eye on the temperature for now, can't be arsed troubleshooting what will likely take an age to fix a simple problem...

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