Overheating...cures?

you vehicle should be able to cop all your towing on a hot day without overheating

check list

Radiator inturnal and external , you will be suprised how many people do mud crossings and never chaeck to see if the outside fins are blocked .

Thermostat , make sure it opens when it should , to early ar to late and cause major overheat problems

Make sure your not blocking the front of your car with massive spotlights , winch control boxes ect.....

Everyone forgets this one , make sure the aircon condenser is not blocked with leaves or mud , this will stop air flow to the radiator & clutch pan

Make sure your clutch fan is working properly , they dont last long , so it might pay to invest in a new one .

Head gasket for slight leaks , very simple test that can be done at any workshop .

If you are carying very heavy loads , it can pay to asist cooling with a thermo fan.

good luckCraigs hut 2003

Having had a lot of experience with Toyotas in high temperatures from the smallest Echo to Celicas, Camrys, Prados and Lancruisers, my opinion is that they don't overheat in anything OZ can throw at them. Check all that's been suggested but before that check or even just replace the radiator cap. Coolant gets to the bottle via the cap and if the spring or the seal or both are not working properly an excessive amount of coolant will escape. I always check the simplest things first and if your gauge isn't showing overheating, I think the cap may be the culprit.

If it is overheating there is something wrong so get it checked out. If it is a V6 I would have the head gaskets checked. Many were replaced under goodwill buy Toyota and even some had engine rebuilds so it may pay to check previous history to see if it was done.We have so little time to enjoy our land

Got to ask if your guage is not showing hot where is it pointing. Also you should be able to tell if it is hot or not when you pull the bonnet. Try replacing the thermostat first as this is the most common cause of water being pumped out of the radiator.

Hi - Thanks for all your replies. It was overheating badly last year and I tried the following before I cracked the head last summer (offroading) and then had it and the rad replaced: bought a new OE rad cap; new OE expansion tube; new OE rad hoses and new OE thermostat. I used to have a set of IPFs in front of the rad but quickly discovered that they were blocking the airflow over the rad core.

Now I have heard of the simpler things: rad cap, expansion bottle tube/lid causing problems before so I might just swop them out again. To answer another question the gauge justs sits at the halfway mark.

I've known and trusted Toyota's for years and have only ever had this sort of problem before with a LandRover 110!