Traveled a lot over the Christmas holidays.
Have read a lot of posts but have so far not found anything relevant, so I hope some one might have had similar problems.
1. While going slowly and accelerating the auto appears to go mad, as it would appear that even when it downshifts the car struggles to pick up speed and sounds as if it is over reving.

126100 Klm, Transmission fluid replaced at 100000klms.

2. So far only on one hill??? While breaking to reduce speed a weird du du du noise appears to come from the front breaks. Again only on one particular hill that was driven twice.

Brakes checked, still plenty of meat on pads, rotors appear straight.

I remember reading a post about the capacity of the transmission sump being 4 ltrs, I have not been able to find this post again. Would someone please confirm as I cannot find this info in the manual either.

Forgot to add 2007 380 DB series III ES Auto.
New plugs at 100000 klms.
Timing belt tensionser and seals at 100000klms.
If any members live in Queanbeyan, it is the hill going to Bungendore (Kings Hwy). While cruising downhill into Queanbeyan, applying brakes to slow down to 60 klm.

Can't help with the trannie but no way is it possible to check with the naked eye if your discs are not warped.

Trans issue sounds like over-heating trans fluid. Best to get an external trans cooler fitted inline. What fluid did you use or get filled. Is it SPIII spec? As for brakes, as Steeler said, best to get it checked by a brake specialist.

Forgot to add 2007 380 DB series III ES Auto.
New plugs at 100000 klms.
Timing belt tensionser and seals at 100000klms.
If any members live in Queanbeyan, it is the hill going to Bungendore (Kings Hwy). While cruising downhill into Queanbeyan, applying brakes to slow down to 60 klm.


Have you seen Trevor at Australian Brake Sleeving in Queanbeyan ?. He is a good no BS operator.

Hi Steeler,
Obviously you live in the Queanbeyan area so you would know the hill I am talking about.
Just to add a bit of info.
The first trip was approximately 1000 klms round trip. Both legs broken by one hour stop in Goulburn. During the whole trip (both ways) the noise only happened when slowing down on that particular hill.
The second trip was approximately 600 klms again as above breaks, and again noise only when breaking on that on hill.
No brake noise at any other time during the trips and no noise when driving around the small rural town I live in.
The visual brake check was just for possible obvious faults, worn rotors, worn pads, uneven wear and possible visible warped rotors. I realize that rotors need expert checking for warps.

Transmission fliud change done by mechanic so assume correct fluid used. Again only happened once on first trip, again on same hill, this time going up. When accelerating from 60 to 80.
Second trip again going up hill, but also while going downhill on a on ramp to the M5.

Apologies for the long post, but has me baffled.

Just because it was done by a mechanic does not guarantee they used the correct fluid. Many a Mitsu transmission were damaged by non-mitsu mechanics using your standard run of the mill trans fluids. Mitsus need special trans fluids. I would check the work sxhedule to see what they put in or ask them.
As for brakes, heaat causes expansion and this magnifies warps. You can try doing a repeated accl/decl on a quiet street like going to the speed limit and then drop anchors, not enough to kick in the ABS. Repeat this to see if the noise comes on or not.

Hi Steeler,
Obviously you live in the Queanbeyan area so you would know the hill I am talking about.
Just to add a bit of info.
The first trip was approximately 1000 klms round trip. Both legs broken by one hour stop in Goulburn. During the whole trip (both ways) the noise only happened when slowing down on that particular hill.
The second trip was approximately 600 klms again as above breaks, and again noise only when breaking on that on hill.
No brake noise at any other time during the trips and no noise when driving around the small rural town I live in.
The visual brake check was just for possible obvious faults, worn rotors, worn pads, uneven wear and possible visible warped rotors. I realize that rotors need expert checking for warps.

Transmission fliud change done by mechanic so assume correct fluid used. Again only happened once on first trip, again on same hill, this time going up. When accelerating from 60 to 80.
Second trip again going up hill, but also while going downhill on a on ramp to the M5.

Apologies for the long post, but has me baffled.



Nah Newcastle, Trevor was one of my customers in that region but i used to travel that road over to the Bay all the time. He really was one of the most switched on when it came to under car.

Captain, this is going to sound crazy BUT perhaps there is something with the road surface on that particular road if it has NOT happened anywhere else since or before.

With trans, capacity for drain and fill is about 5.5l I would do a cold check and then a warm fluid check and make sure fluid is at the correct level. Also did they flush the trans or just drain and fill. 100k for a trans in my opinion is way too far, not sure if done prior but also check fluid colour. I think I remember you could not get the Mits fluid but would like to hope proper fluid was used

Thank you all for the suggestions and input.
I will check with the mechanic about the fluid and flush. I purchased the car with 89000 on clock so thought better do change trans fluid at 10000 to be sure.
Will go for drive later and test brakes as suggested, could be the road surface on that one hill.

What I find strange is that the trans changes smoothly at all other times.
So I thought maybe drain sump and fill with Mitsi fluid and see?
So can someone confirm sump holds 4.0 litres?

Sorry just reread Madmagna's post trans fluid 5.5 ltrs.
Have checked hot level fluid is at hot level, and nice clear colour, no burnt smell.
What level should it be cold?

I suggest you take it to an auto trans specialist and get a power flush and fill with sp III fluid or buy a few containers from mitsu and have them use it and also fit an additional trans cooler.