Engine fan stays on

[yuppa]

First time this has happened.. After work today, parked, engine fan stayed on..

Turned the rover on and off a few times and the engine fan would not turn off..

Engine temp gauge is showing just under middle, and i didn't feel any excess heat coming from engine compartment..

I ended up disconnecting the battery and it stopped, It didn't turn back on when I reconnected the battery..

Any idea what would cause this?

[PaulC]

Your electric fans will continue to run as necessary until temp is low enough. Pulling the power on them is not a good idea..... as apparently the coolant was hot enough to cause them to run.

There maybe some underlying condition causing your cooling system to be so hot in our current cool wet weather....may want to investigate further.

Ideally you should keep the engine idling allowing the coolant to circulate through the cooling system if possible......providing an overheating condition with loss of coolant isn’t immanent.

[rayhyland]

And don't always trust the gauge.

[yuppa]

Thanks guys, turns out my coolant was low..

I had radiator hoses replaced and a coolant flush a little over 2 years ago. I was told at the time I still had a few pinhole leaks in my radiator, and I do see the occasional drops of fluid, however nothing major, no puddles..

Well I haven't checked coolant level in over 2 years, so I topped it up this morning and everything seems fine again..

Thanks for the prompt replies!

[Bill E.]

OK, so let me get this straight.

1 First you notice that your fan is staying on.

2 Then you try starting and stopping the engine to make it stop.

3 Then you disconnect the battery and reconnect to make it stop.

4 Then you come inside and log on to the Rover-Landers website and post looking for some advice.

5 Then you remember that you haven't checked the coolant level in 2 years even though you were told at the time that your radiator has leaks.

I think I have this sequence correct, don't I? :banghead:

[yuppa]

er yeah.. Im a noob with cars but at least i'm trying to learn ...

[Bern B]

yuppa
do yourself a favor and check your service manual for fluid changes
I would change the following if you want to keep the truck running
coolant
brake fluid its probaly never been done
fuel filter in front of the rear tire on frame
and in the drive line, tranny,trasfer case, diffs, and swivels

dont learn the hard way

[yuppa]

Replacing fuel filter has been on my list for a while.

"and in the drive line, tranny,trasfer case, diffs, and swivels "

I will look into these, I have never checked them

[John]

I think I have this sequence correct, don't I?

It does sound silly after the fact but you are not the first person, and certainly wouln't be the last, to go troubleshooting a problem by looking for much more serious causes and forgetting to start with the basics. It is not just a noobie thing. Always start by checking the basics, even if you know that the "basics" were all in order very recently.

[DaveB]

I think I have this sequence correct, don't I? :banghead:

Even with lots of experience -- and guidance from some experts -- it can be easy to ignore the basics when a problem comes up.

Just coming off Northwest Challenge reminds me of the last Northwest Challenge in BC where my truck just quit running when it got warmed up.

The prognosis of myself and the experts was it was the fuel pump, and I spent $450 ordering up a new pump after limping the truck home, only to find it didn't cure the problem. A couple of hours of forum searches later I discovered there is a Crankshaft Position Sensor on my truck that exhibits the same traits, and is only about $80, and is a common cause of this problem, with no OBD2 indications (which the fuel system should have exhibited).

$80 later and the truck was running right. A forum can't always solve your problem, but a quick search before you do anything else might provide the answer or at least be the trigger to remind you of something you might have overlooked.

As far as your Discovery goes, definitely continue to check this forum, but it's also worth doing a search on discoweb.org as there's so many disco-specific problems discussed there.

cheers, Dave

[yuppa]

Thanks for the positive support guys!