75 series getting hot

Did you have the pump done at the same time ?? You say injectors but nothing about the pump, if this is not set right it will cause this problem. Regards Steve M

Also what brand of viscous hub did you use. I ahev heard of certain after market brands not locking in properly. Some people are under the impression that at 100k's it wont need to lock in but if the weathers hot enough it will. When you had radiator done did you clean out any crap mud etc that might have built itself up in the air con condensor. Did you have the same problem prior to doing your mentioned work or has it been since your mate has had it done ?? Can you actually hear the clutch fan cut in when the temp starts to rise. Another way to test is get it up to the point of the gueage rising and gets quit warm then pull over quickly and pop bonnet and grab hold of throttle cable and rev to about 2g's and the fan should be roaring its nut out. I had this issue with my old VL commodore and even after fitment of new coupling still had the same issue every now and then turned out to be a faulty after market clutch viscous so bought a genuine one never had another problem after that. Regards Steve M

I would be trotting off to the spare parts shop and getting a new Thermostat. I had one seize up once and had to pull it out on road , took the gutz out of it and put it back , went through the whole process the next day when I got a new one , and make sure you get genuine , easiest way I found to get at it was drop the A/C comp' off and lay it back over near the washer bottle, then loosen the Alternator and lean it forward then you can get a clear go at it, and don't loose the rubber washer , if you don't get a new one re use it , it is the seal.
Have fun

Doug

If I run my HJ75 with 2H engine over 100 kph with the air con going it raises the temp . If I turn off the air con , it drops back to normal . Running it without the air con going I can sit on 100 kph all day at normal temps with no problems :)

why are so many people pushing genuine parts? most toyota parts come from the same place. there is NO advantage in genuine parts. shock horror!!! i know it is different up here, but when we fit thermostats we cut the guts out of it. it works. but no good down in the cold.you have covered all bases, the injector pump timing cant move. sometimes the gauge just reads high.

75 series with 2H engines always ran hot if pushing past the 100kph mark, Toyota even recognised this when they fitted an extra vent to the passengers side guard and put plastic box around the battery to try and stop it cooking.
One of the aftermarket turbo mobs even put one in a wind tunnel and discovered that at 100kph there was no airflow through the radiator due to the shape of the body and the restricted space under the bonnet.
Basically I found with mine that it was best to sit around 95kph as the engine is starting to rev too hard and guzzles fuel much over this anyway.
I found that the solution was to remove all obstructions from in front of the radiator like spotties etc, make sure thermostats, cluch fan and radiator are all ok, (which you seem to have done), only use the red Toyota coolant in the correct mix(too much coolant will actually make any engine run hotter) and that was as good as it gets.
In really hot weather I found that if I used 5th it got hot, drop back to 4th with the water pump spinning harder it ran cooler. The direction of the prevailing wind will also affect it, tailwind will cause it to run hot as well, simply poor airflow.

Hi the gauges arent much good after a few years, put an aftermarket one in so you can see the real story.
You can lift the back of the bonnet up using 3 washers on the rearmost bolts on the hinges to allow more air flow.
By the way it is a 2H the 2F is petrol.
Regards
Tour Boy

radiator or thermistat. 2f diesel hey....well i cant blame you for thinking it is a diesel, the 2f is a petrol and the 2h is diseasal....

If your radiator hoses are old replace them.

The bottom one can end up being so soft it sucks itself thin and contricts the flow of coolant, especially on long slow uphill gradients.