normal running temp
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  1. #1
    Rods 'n' Sods Junkie supateach's Avatar
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    normal running temp

    I am currently trying to get my temperature gauge to work accurately, it has the BMW sensor in the engine and the original toyota gauge, it was originally reading very high so I put a small 10 ohm resistor in series with the sensor to drop the needle down a bit and I tested it with the sensor wired up in a kettle with a thermometer in it . I set the gauge at half way at 85 degrees. however when I run the car the gauge goes up past halfway. what temp should it run at and could anything else be causing the gauge to read high when the sensor is in the engine
    Thanks

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    Official RnS Addict mygasser's Avatar
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    have you checked the actual engine temperature when it's 'up to temp'? most modern engines run way higher than 85 degrees.
    need a job done on your project? i may be able to help.

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    About 200F (93C)

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    Rods 'n' Sods Junkie supateach's Avatar
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    thats why the gauge reads high I thought it should running about 85, how would I check the actual running temperature, once its hot I cant get the cap off to check with a thermometer

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    Rods 'n' Sods Junkie supateach's Avatar
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    just been reading another thread about overheating and someone suggested the correct rad cap is important, mine will be over 40years old so I assume another would be a good idea, how do i know what is right pressure for my system there is no mention of it in the manual
    Thanks

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    Official RnS Addict 35kid's Avatar
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    rad cap is only really important if water is boiling up and spilling out the top.

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    Official RnS Addict 35kid's Avatar
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    Quote Originally Posted by supateach View Post
    thats why the gauge reads high I thought it should running about 85, how would I check the actual running temperature, once its hot I cant get the cap off to check with a thermometer
    use a laser thermometer then you don't need to take the top off.

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    Official RnS Addict mygasser's Avatar
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    You could put some liquid in one of the dips in the inlet or cylinder head and then measure it with your thermometer once up to temperature.
    need a job done on your project? i may be able to help.

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    Rods 'n' Sods Junkie supateach's Avatar
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    now thats clever

  12. #10
    Official RnS Addict mygasser's Avatar
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    Quote Originally Posted by supateach View Post
    now thats clever
    or cheap, depending on your point of view. I try to work with what I have.
    need a job done on your project? i may be able to help.

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