Normal Temp Readings
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Northstar Engines and System Technical Discussion Discussion, Normal Temp Readings in Cadillac Engine Technical Discussion; Is it normal for the temp guage to go slightly past center (straight up) on a very hot day (90+ ...
  1. #1
    codewize's Avatar
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    Normal Temp Readings

    Is it normal for the temp guage to go slightly past center (straight up) on a very hot day (90+ deg F) ?

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    Ranger's Avatar
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    Re: Normal Temp Readings

    Mine is normaly on center. While I have never had mine go past center I don't think slightly past center is anything to worry about.

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    JimHare's Avatar
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    Re: Normal Temp Readings

    As Ranger said, no worries, mate. On my Eldo gauge, the center position covers temps from 195 to about 210. One tick higher is about 210 to 220. Two Ticks is 224 or so. Never had it hit the next tick mark.

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    codewize's Avatar
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    Re: Normal Temp Readings

    The highest I've seen is between center and the next mark. I guess that's normal while idling on a 90 deg day.

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    Submariner409 is offline If it won't run, chrome it
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    Re: Normal Temp Readings

    Take a look at my reply on the same subject in Past Deville/Seville threads

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    ewill3rd is offline Cadillac Technician
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    Re: Normal Temp Readings

    Some models the fan won't even come on until about 227 F.

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    Raze's Avatar
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    Re: Normal Temp Readings

    Here's my experience, I drive in Atlanta and recently on 90+ days I get the following:

    low rpm driving w/out a/c, I get center to slightly above center mark depending on stop and go but it varies quickly since the rad fans are not always on.

    low rpm driving w/a/c on, I get center pretty much all the time and only goes over if I punch the throttle here and there, this seems to be more stable as the rad fans are always on.

    high rpm driving regardless of a/c between center up to tick past center (this means I'm accelerating and not letting off the gas and when it's 90+ out it will get to the second mark but it stays there till i let off).

    Now I have personally had to have my N* timeserted at 90,000 miles because I lifted the front head, but the above observations hold for before and after the engine work.

    I have also had a waterpump go, and a radiator side tank (they are made of plastic) crack all before I lifted the front head. Both of these started to raise the temp a little past center but I drove 20+ miles when each occured, leaking coolant the whole way with no problem except the "check coolant level" warning.

    If you are really worried about your engine temps you could always upgrade your coolant system. A larger radiator, lower thermostat, radiator fans that kick on at lower temps could all help, but the stock system is more than sufficient.

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    codewize's Avatar
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    Re: Normal Temp Readings

    Ok now I have to ask. What is timesert ?

    Quote Originally Posted by Raze
    Here's my experience, I drive in Atlanta and recently on 90+ days I get the following:

    low rpm driving w/out a/c, I get center to slightly above center mark depending on stop and go but it varies quickly since the rad fans are not always on.

    low rpm driving w/a/c on, I get center pretty much all the time and only goes over if I punch the throttle here and there, this seems to be more stable as the rad fans are always on.

    high rpm driving regardless of a/c between center up to tick past center (this means I'm accelerating and not letting off the gas and when it's 90+ out it will get to the second mark but it stays there till i let off).

    Now I have personally had to have my N* timeserted at 90,000 miles because I lifted the front head, but the above observations hold for before and after the engine work.

    I have also had a waterpump go, and a radiator side tank (they are made of plastic) crack all before I lifted the front head. Both of these started to raise the temp a little past center but I drove 20+ miles when each occured, leaking coolant the whole way with no problem except the "check coolant level" warning.

    If you are really worried about your engine temps you could always upgrade your coolant system. A larger radiator, lower thermostat, radiator fans that kick on at lower temps could all help, but the stock system is more than sufficient.

  10. #9
    JimHare's Avatar
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    Re: Normal Temp Readings

    A "timesert" is a steel threaded insert that goes in to the head bolt holes in the block when you do a HG change, to strengthen the area the head bolt goes in to. It's much stronger and less likely to fail than the base aluminum that the head bolts are threaded into originally.

  11. #10
    codewize's Avatar
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    Re: Normal Temp Readings

    Like a heli-coil for repairing damaged threads? Why the hell is it called a timesert?

    Whatever...

  12. #11
    zonie77 is offline Cadillac Owners Connoisseur
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    Re: Normal Temp Readings

    That's the name of the company...ask them why they named it that.

  13. #12
    codewize's Avatar
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    Re: Normal Temp Readings

    Oohhhhh

    Quote Originally Posted by zonie77
    That's the name of the company...ask them why they named it that.

  14. #13
    Ranger's Avatar
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    Re: Normal Temp Readings

    If you have ever seen a helicoil you know that it is somewhat like a slinky. Timesert is much beefier. http://www.timesert.com. It is called Timesert because they are made by Timesert.

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