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Thread: Does your Cortina overheat in Summer ? Advice please.

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    Default Does your Cortina overheat in Summer ? Advice please.

    Hi

    I drive my 10/72 Automatic TC Cortina at least fortnightly. I drove only 25 kms on Saturday and for the first time ever I watched as the temperature needle moved slowly to the red !
    I have never had it move past halfway before and I've driven longer distance and on hot days. I had to drive down Springvale Rd and got every red light. At each light the car struggled, and chugged as if it was going to stall. When I was driving she was fine but the idling was bad as the temperature gauge continued to rise.

    I got to my destination and switched the car off, then tried to restart and she wouldn't. After visiting family I checked the radiator (full) and all fluids were good.
    The car started and I got home but again after a while the threat to stall happened at every red light and the temperature gauge was climbing.

    It's got me confused about what my problem could be. Any ideas appreciated. Thanks

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Could be a number of issues, Thermostat failing to open up properly, blocked radiator or water pump failing to circulate.
    Being an old car when was the last time you checked or replaced water pump, thermostat or had your radiator cleaned out which could have a build of scale.
    When was the last time you changed coolant.

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Hello Karin,

    That's bit of an annoyance for sure, usually these old 250ci pre-x's are tough as guts, I use Nulon Type A coolant in mine and its never steamed up or boileld over, sometimes the earth on these cars can be a problem, I've had the fuel gauge on the wagon automatically go to ground a few times, quite nice because the gauge goes to full.

    Could well be a few issues that PD56 suggested but I know you regularly have the car looked at by a professional mechanic with decades experience so even basic stuff like loose or dirty battery terminals can make these old cars die instantly, I've had that happen a few times [also check & clean the battery to engine block ground lead]

    Once AL C suggested I replace the capacitor [these days called a condenser] in the points distributor, since then she's been OK BUT I regularly spray the carby [thoroughly] with carb cleaner spray, that helps the wagon every 2 weeks or so to KEEP ON KEEPING ON, anyway we'll keep on this and I"m sure your lovely XLE will be fine
    Last edited by tfghiatcxlematt; 19-03-2018 at 12:57 PM.

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Quote Originally Posted by PD56 View Post
    Could be a number of issues, Thermostat failing to open up properly, blocked radiator or water pump failing to circulate.
    Being an old car when was the last time you checked or replaced water pump, thermostat or had your radiator cleaned out which could have a build of scale.
    When was the last time you changed coolant.
    Thanks for the ideas PD56. Funnily enough I had the radiator flushed and a lower radiator hose replaced, water pump outlet checked just in February.
    I'll be taking the Corty out for a test drive on the weekend to see what happens.



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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Quote Originally Posted by tfghiatcxlematt View Post
    Hello Karin,

    That's bit of an annoyance for sure, usually these old 250ci pre-x's are tough as guts, I use Nulon Type A coolant in mine and its never steamed up or boileld over, sometimes the earth on these cars can be a problem, I've had the fuel gauge on the wagon automatically go to ground a few times, quite nice because the gauge goes to full.

    Could well be a few issues that PD56 suggested but I know you regularly have the car looked at by a professional mechanic with decades experience so even basic stuff like loose or dirty battery terminals can make these old cars die instantly, I've had that happen a few times [also check & clean the battery to engine block ground lead]

    Once AL C suggested I replace the capacitor [these days called a condenser] in the points distributor, since then she's been OK BUT I regularly spray the carby [thoroughly] with carb cleaner spray, that helps the wagon every 2 weeks or so to KEEP ON KEEPING ON, anyway we'll keep on this and I"m sure your lovely XLE will be fine
    Thanks Matt. The weird thing was that the coolant (Nulon Type A also) looked full in the radiator. I'll see how she goes this weekend.

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Hi Karin, you may have solved the issue by now regardless a couple of tips that cause overheating;-

    1. Check the thermostat - you can do this without pulling the thermos cover simply drain about a litre of water from the radiator using a syphon pump. This allows you to pop the top radiator hose without the need to remove the thermostat and cover.
    2. Check coolant levels that is quantity are they within spec - flush the radiator because you can bet one or both of the tanks will be blocked with crap.
    3. Check water pump - and water pressure which will require a special adaptor to fit to the radiator cap and a pressure gauge.
    4. last to be sure you are not getting a false reading check the temp switch.

    I have found it is invariable one of these short of the block itself being full of crap which does occur with these old cars.

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    All the above is excellent advice BUT get it fixed quickly as overheating a motor removes tension from the piston rings thereby reducing compression resulting loss of power

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Hello Karin,

    Hope you have been well and enjoying driving your very beautiful early production Oct 1972 TC XLE.

    Just wanted to say I have no problems with the old ignition point system in my cars, just putt'ng around town in the wagon there's never any trouble, maybe once every year or two will give them a clean with emery paper along with the rotor and cap contacts.

    I decided to renew the Condenser's in both cars, part number GB530-C, only $17 for one at Bursons, anyway hopefully your car is running OK now, with luck that little problem before is over and done with.



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    Last edited by tfghiatcxlematt; 10-05-2018 at 03:01 PM.

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Thanks TDCorty, Hallee and tfghiatcxlematt. All good advice. It is booked in with my mechanic at the end of the month as he has been super busy. Will let you all know the outcome.

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Quote Originally Posted by Karin B View Post
    Thanks TDCorty, Hallee and tfghiatcxlematt. All good advice. It is booked in with my mechanic at the end of the month as he has been super busy. Will let you all know the outcome.
    That's gr8 Karin looking fwd to your mechanics findings. Oh I omitted to say there is another check you should do to make sure the radiator cap is OK and pressurising within spec. These should be discovered as part of the pressure test but are not so easy to directly test. If the cap is fouled with rust and crap then get a new one they are relatively inexpensive. Cheers and good luck with your mechanic.

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Quote Originally Posted by TDCorty View Post
    That's gr8 Karin looking fwd to your mechanics findings. Oh I omitted to say there is another check you should do to make sure the radiator cap is OK and pressurising within spec. These should be discovered as part of the pressure test but are not so easy to directly test. If the cap is fouled with rust and crap then get a new one they are relatively inexpensive. Cheers and good luck with your mechanic.
    Good point. Funnily enough I got a new radiator cap last service.

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    My mechanic replaced the thermostat, cleaned and surfaced the housing. The drive home was without incident BUT the big test will be when I drive for miles and miles next weekend to be sure that it's all fine.
    Last edited by Karin B; 04-06-2018 at 09:24 PM.

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    Default Re: Does your Cortina overheat in Summer ? Advice please.

    Excellent news Karin,

    Those are always the best fixes, something basic and straightforward but never the less an important part. You'll love being back behind the wheel and showing these plastic people in their plastic cars what true style is!


    Take care always & catch you soon
    Last edited by tfghiatcxlematt; 05-06-2018 at 12:36 AM.

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