Question on Temperature Gauge Reading

Hello,

I am new to 928s and new to this forum and I have an immediate concern about the car.

What temperature range is acceptable for a 79 928 stopped at a traffic light on a hot afternoon with the air conditioner running?

The temperature gauge indicates ¾ of the way towards hot and then slowly falls down to just over ½ of the way when the car is moving. The coolant level is fine. Have not had time to look at the radiator fans with the car running.

Is this a normal temperature reading?

Thanks,
Woody Montier

I have moved this to the appropriate forum, technical discussions.

As I recall the '79 will have a fan that is belt driven then fluid driven.

With the engine *OFF* see if you can spin the fan easily. If so, then it needs to be refreshed or replaced.

When you are moving the air flow is usually sufficient for most cooling needs, so it is likely a fan issue.

Thank you for the tip. It makes sense becasue I can turn the fan blade by hand easily. The blase does not spin from a flip of the wrist but there is not much resistance.

Do I rebuild or repalce the fan clutch? Is there a recommeded parts supplier?

Thanks again,
Woody Montier

There is a backyard type of fix you can try: www.nichols.nu/tip482.htm

You might be able to get a good used replacement from 928srus.com or 928intl.com, they both might have other options and suggestion on how to fix as well. 928gt.com would be another source for new parts as well.

Many remove the viscous fan altogether and upgrade to full electric fans... Not cheap, but not overly expensive or difficult. That gauge is not calibrated for a reason...each car is a bit different (actually on the GTS's they are calibrated and maybe on all the '89 and up cars even). It does not sound like your car is overheating and not getting dangerously warm either...

Thanks for the information. I will try the clutch repair with silicone oil. And if that goes wrong, an electric fan will be an option.

Is there any preferred electric fan known to fit?