Author Topic: Temp Gauge.  (Read 92 times)

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Offline buckwits

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Temp Gauge.
« on: October 09, 2017, 07:45:47 PM »
Hi all, got my 124 Friday and all seems well except for the temp gauge. It only goes up to 100 degrees, the first line. I would guess it should go nearer the middle, 110. The heater is scorchio so I assume the gauge is at fault.

Offline rsk289

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Re: Temp Gauge.
« Reply #1 on: October 10, 2017, 08:13:33 AM »
I've never come across a car cooling system that's designed to work at over boiling point (for water).  The pressurised system and anti-freeze element will allow a slight rise, sure, but most systems generally run at somewhere between 85-95°C.
The 'gauge' in my 124 generally sits a little below the 100 mark - I assume the area above this is intended to show a wider scale to indicate excess temp more accurately, but my experience of modern cars is that 'gauges' nowadays are not showing the engine temp so much as acting as a warning device if this is exceeded.  Tbh I think they're more for retro show than practicality, with many cars no longer having such a thing.  For warming up from cold purposes, knowing the oil temp is more relevant than the coolant temp.  My '01 M Coupé has both water and oil temp gauges, and the book says not to exceed 3,000rpm from cold until the oil gauge has moved up.
I drive my 124 carefully until the blue light goes out, then give it another few minutes for the oil to be warming through properly before giving it any real beans.
'68 Cooper S, '68 Mustang GT fastback, '01 M Coupé, '65 AC Cobra 289, '68 Land Rover 88" Station Wagon, '67 2CV van... and now, '16 124 Spider

Offline buckwits

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Re: Temp Gauge.
« Reply #2 on: October 10, 2017, 07:03:00 PM »
Thanks for that, much appreciated. Just thought the needle would have been in the centre of the gauge.

Offline rsk289

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Re: Temp Gauge.
« Reply #3 on: October 10, 2017, 07:40:49 PM »
Too obvious!
'68 Cooper S, '68 Mustang GT fastback, '01 M Coupé, '65 AC Cobra 289, '68 Land Rover 88" Station Wagon, '67 2CV van... and now, '16 124 Spider