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1967 Mark 2 running hot

Old 07-10-2019, 10:25 AM
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Default 1967 Mark 2 running hot

I own a Mark 2 , 1967 3.4 Jaguar which is running hot

I have changed the thermostat, coolant and added water wetter to the rad, I have also added lead addative to the fuel and it runs just above the 90 degrees on the thermometer - any suggestions?
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67ECoupe (07-10-2019)
Old 07-10-2019, 10:41 AM
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Welcome. I would suggest that you take your inquiry to the appropriate technical forum, which is located here:

The members of the above forum are pretty sharp and it is an active forum;
Old 07-10-2019, 11:57 AM
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Assuming your "just above the 90 degrees on the thermometer" is your car's factory supplied gauge, which is calibrated in Degrees Celsius, and you are in U.S., that temperature reading sounds normal for a typical Jaguar's temperate climate designed cooling system this time of the year.

From my experience from owning one, Jaguar would calibrate their '67 XKE's electric cooling fans' "otter switch" to not kick the fan on until just over 100 deg C!

If you are in the UK, your current temp indicates 71 deg F, which is warm enough to warrant your car's thermostat opening which would look like it is doing its job.

So unless you are getting other symptoms of overheating, or until it starts going over 100 on your gauge, I would not worry about it.

Last edited by 67ECoupe; 07-10-2019 at 12:28 PM. Reason: Additional Information
Old 07-10-2019, 03:34 PM
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Welcome to the forums from ElinorB.
Old 07-10-2019, 03:52 PM
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Welcome aboard.
Old 07-10-2019, 05:37 PM
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Welcome to the forums Stephen,

Follow this link to the MKI / MKII S type 240 340 & Daimler forum for help, advice and information. The 'HOW TO' thread at the top is a good place to start for information on regular issues.

Please add vehicle details to your Signature to help others to give relevant advice. Go to the User CP button on the left of the top menu bar, then Settings & Options under Your Control Panel. Select Edit Signature and enter the details.

You can also uset the UK & Eire Region forum by following this link to find other members in your region.

Enjoy the forums.


Old 07-10-2019, 09:15 PM
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Welcome to the Forums.
Old 07-11-2019, 03:33 AM
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Thanks for that - I'll just keep an eye on it then
Old 07-11-2019, 05:24 AM
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Welcome to the forums.
Old 07-11-2019, 05:30 AM
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Welcome to Jaguar Forums Stephen,

Good to have you with us.
Enjoy the forum.

If you haven't done so already you should add your car details to your signature to help others to help you.
If you need help with getting around and using the forum follow this link for some help Forum Help
Old 07-11-2019, 08:01 AM
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welcome to the forum - enjoy!!!
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