Thread: Transmission Temperature

85C is quite normal here.. but then we havehigh temperatures in the lowlands. Comparable to Darwin or Port Douglas. When a Discovery or other auto box comes up to our garage at 750m altitude it has a fair climb and will also be that hot.

You didn't mention the filter. hope you did change it.
Wish I could post a picture of the one I took out today..all gunged up and the Range with the same box as yours was running really hor.

Originally Posted by Anita

85C is quite normal here.. but then we havehigh temperatures in the lowlands. Comparable to Darwin or Port Douglas. When a Discovery or other auto box comes up to our garage at 750m altitude it has a fair climb and will also be that hot.

You didn't mention the filter. hope you did change it.
Wish I could post a picture of the one I took out today..all gunged up and the Range with the same box as yours was running really hor.

thanks Anita,

I've found some info on Ashcrofts transmissions site regarding temps and what I have now is regarded as being normal. If this is normal, why have I been running around 25C lower than this for the last few years that I know of What has now changed?
I think I mentioned about half way through my original post that I had installed a new filter kit.
Got me a bit concerned as to what will happen when I hook up the 3t van

It sounds like the clutches might have started to lose material and clogging something in the trans fluid circuit.
Check the colour of the fluid and wipe dipstick on a white rag to see if there is anything in it, will look a bit like fine dust.
If all looks ok check the fluid flow by disconnecting the return line from the coolers and have someone start the engine for 30 seconds, run the return line into a clean bucket and see if there is enough flow. It should come out in a steady stream, if it just dribbles or is in spurts you have a problem.
If flow seems ok see if you can put say 20-30 psi air pressure into the return fitting on the trans, if the air doesn't go into the trans easily or is restricted you may have a clogged fitting internally.
Drain the fluid to see if there is any rubbish in the pan, could just look like dust in the fluid and check the filter to see if it is clogged.

Originally Posted by oka374

It sounds like the clutches might have started to lose material and clogging something in the trans fluid circuit.
Check the colour of the fluid and wipe dipstick on a white rag to see if there is anything in it, will look a bit like fine dust.
If all looks ok check the fluid flow by disconnecting the return line from the coolers and have someone start the engine for 30 seconds, run the return line into a clean bucket and see if there is enough flow. It should come out in a steady stream, if it just dribbles or is in spurts you have a problem.
If flow seems ok see if you can put say 20-30 psi air pressure into the return fitting on the trans, if the air doesn't go into the trans easily or is restricted you may have a clogged fitting internally.
Drain the fluid to see if there is any rubbish in the pan, could just look like dust in the fluid and check the filter to see if it is clogged.

thanks oka374,
I'll check all these things tomorrow as its getting a little late now. Hopefully I'm not going to find any residue in the fluid... that's the last thing I need.

I fitted a temp guage to my auto after I over hauled it one thing I noticed that the temp started to climb the faster I went this was around 5000 km after the over haul.


Caused some stress so went through possible causes and this included filter starting to block which after being worked on a possibility and was going to do a oil and filter change around the 5000 km mark anyway once I did this it has been fine with another 10K kms done since then.

so , just bits off the new friction plates?
I wonder how LR handled that?

There is a chance you have over heated the torque converter. This happened to me too. Got away with it the first time, stuffed it the second time. Although i did drive it the second time.

My torque converter was an olive yellow mustard colour when it was removed. I'm pretty sure it was meant to be an orange yellow colour. It might pay to remove the inspection plate (3X 8mm screws if i remember correctly) on the bottom of the bell housing and check the colour of the TC.

I sincerely hope this is not the case, but is worth checking.

Originally Posted by Jazzman

There is a chance you have over heated the torque converter. This happened to me too. Got away with it the first time, stuffed it the second time. Although i did drive it the second time.

My torque converter was an olive yellow mustard colour when it was removed. I'm pretty sure it was meant to be an orange yellow colour. It might pay to remove the inspection plate (3X 8mm screws if i remember correctly) on the bottom of the bell housing and check the colour of the TC.

I sincerely hope this is not the case, but is worth checking.

thanks for the suggestion ... I will check it out.