Cooling question - Minor change in temp

[The jiffle king]

Hi

I've had my car for 10 years and it's running very well but I| have a question about a minor change I've seen recently.

When on a long motorway run, my 4.0 has always run at about 70 on the temp gauge. In the winter it's usually a dash below and summer a dash above 70, but it's always been about 70 on a long run.

In the last couple of weeks I've noticed that the car runs at about 75 on a long run.

I've checked the coolant and that is fine. Fans are both working (kick in at 90) and I wondered if anyone else had this problem in the past and if I should be concerned?

Thanks

[over_the_hill]

It might be a sign that the thermostat is about to give up - possibly not opening soon enough. Might be worth changing to be on the safe side.

[s p a c e m a n]

Belt slipping on the pump?

[WOO5IE]

Might be worth checking to see if there is any crud in the rad. Out side that is

Leaves etc can stop the air flow . The fins can turn to dust so reducing the cooling capacity if the rad is getting old. It happened to mine when I first got the car

[ianwayne]

General wear in the gauge is possible too. A couple of degrees is not a major worry IMHO, but 10C or more may indicate a problem. Mine gets to just over an indicated 100C before the fans kick in and all seems OK.

Edited by ianwayne on Thursday 5th June 18:53

[The jiffle king]

Thanks for all the replies. I'm going to check out all of those items in the next couple of weeks.
I think I need a new clutch anyway as mine has been slipping out of 5th gear

[fausTVR]

The jiffle king said:

Thanks for all the replies. I'm going to check out all of those items in the next couple of weeks.
I think I need a new clutch anyway as mine has been slipping out of 5th gear

Doesn't sound like a clutch fault, slipping out of gear, although slipping would. I'm no expert though.