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Car coolant temperature gauge

What should this go up to to be operating normally

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  • leehawkeye Feb 14, 2008

    How do I contact paul do np

  • leehawkeye Feb 15, 2008

    To Pauldonp

    Wasj ust goingt o ask you af ew more questions on gauge before approaching garage. I think because I am female they take advantage of the fact I know nothing about cars. But I went back yesterday armed with your comments and made the mechanic come out on a test drive with me

    End result car going back in to garage next week so THANK YOU




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Hi if you look at temp gauge it is usually about 3/4 of the way up to the top any higher and this usually means thermostat gone or head gasket gone temp between 50 80 degrees depending on outside temp and how you drive diesel cars run a bit higher due to the amount of extra compression the pistons need to make the diesel flamable if you need further help let me know ok.
Also alot of newer cars run at temperatures lower than what i just said usually below half way but anyhing upto 3/4 of the way up is fine if it reaches the top this means engine problems or rad fan not working or thermostat not opening allowing the coolant to be pumped round engine properly as the thermostat opens when the water reaches a certain temp

Posted on Feb 13, 2008

  • paul proctor Feb 15, 2008

    Ho sorry been offline for a while why do you want to contact me post a message here then i can see why do you need my email let me know what you want ok speak soon

  • paul proctor Feb 15, 2008

    No worrys if your temp gauge is going up to high then it could be one of a few things one test you can do yourself is when you driving is turn the heater onto hottest setting then turn the fan on to blow the heater.
    If the air comes out hot then your thermostat is fine if its blowing warm or cool or cold air then this is your thermostat needs replacing should be cheap to replace part only costs between £5 to $10 uk sterling or $8 to $15 dollars us but thats just the part they wil charge for labour but as its only 15 min to replace shouldnt cost that much.
    If the air is hot then that isnt going to be the problem.
    problem 2: this could be a water leak on water pump allowing air in and water not to be pumped round engine properly this is a bit more expensive abot £20 to £40 or $35 to $80 for part plus an hour labour for fitting
    3rd problem:Now this is the expensive problem it could be that your cylinder head gasket has gone allowing water to mix with heat from exhaust causing the temp to rise the parts cost about £40 to £60 or $70 to $100 for part but the expense with this repair is the labour as depnding on you vehicle could take between 4 hours and 8 hours but depending on what the garage charge for labour you could be looking at about £500 to £700 or $800 to $1200 depending on the hourly rate they charge for labour.
    Hope this is some help to you let me know if you need further assistance or advice ok


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The car coolant temperature gauge, if it has numbers should not go higher than 195 degrees in winter if you have a thrmostat that is rated at that temperature installed in your car.
If you live in a warmer climate you would have a lower temperature themostat rated about 180 degrees.
These temperatures are what your engine temperature will reach before the mechanical thermostat opens to allow coolant to flow to the heater core that the fan blows into your car.
If you have just a visual indicator with low to high range, it should be reading about in the middle of the range to be operating normal.
In extremely hot locations, it will run a little higher than that.

Posted on Feb 13, 2008


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