Thread: Td5 auto box overheating in 4th but not 3rd

Originally Posted by V8Ian

That was my first thought. The auto doesn't have gear oil. Look for problems in the transfer box or diffs.

Yeah I thought transfer myself as well, possibly very low on oil, that'll make some heat!

Righto. Hope at least some of you are still bearing with me.!

Got home safe and sound fortunately.

I have since checked the warning sensor and indicator light and it is working. So I figured there was a blockage somewhere. I then changed the filter and oil but problem persisted.

So then I pulled the cooler and confirmed there was flow. The cooler looked OK with not too much gunk inside or out but gave it a clean anyway.

Just been for a test drive and it seems OK. Definitely lower than it was. So maybe a partial blockage that cleared when I pulled lines or emptied cooler.

Still couple of questions. The standard temp sensor is on the cool side. Why?! And where are people / ashcroft measuring these temperatures? Obviously there is going to be a big difference whether it's bottom of sump, box itself or on cool side of radiator...

I was measuring temps of 150 odd at sump with laser thermometer and more if I pointed it at the box itself. But by the time that atf made it's way round to the sensor it could well have cooled below 120.

On the plus side of all this, I used penrite atf fs and my gear change has never been smoother.

Will keep monitoring and install some kind of temp guage but I reasonably hopeful it's fixed. Oh yeah was a fair amount of shavings on magnet but no large chunks so again that's a win. Hoping for a few more kms out of this box now.

Thanks for everybody's input. Much appreciated and was very helpful.