pajero autotrans overheating

Submitted: Tuesday, Oct 04, 2005 at 14:44

ThreadID: 26984 Views:5578 Replies:9 FollowUps:1

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wally pajero

hi lads
93 nh 3.0 ltre auto transmission over heats when towing camper trailer up hills left penrith got to the hills in barrington tops when transmission light comes on should bigger oil cooler be fitted (auto was serviced before leaving), any sugestions would be great.
wally pajero

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Reply By: PBob - Tuesday, Oct 04, 2005 at 18:03

Tuesday, Oct 04, 2005 at 18:03

Some oil coolers run through the radiator and are mean't to be cooled by the hot water. This has the effect of heating the oil even more, not less. bigger air filled oil coolers on the front of the radiator are probably the go. Or buy a manual.
Don't drive it too much in overdrive, pull it back at any slight incline.

AnswerID: 133014

Reply By: Member - Trevor R (QLD) - Tuesday, Oct 04, 2005 at 18:07

Tuesday, Oct 04, 2005 at 18:07

Wally,

If you do not regularly have this happen or you don't intend on climbing big hills regularly I would not worry about it. My 96 3.5 lt did this once in it's 170 000km life with me but that was also on an extremely big climb with van in tow. No side effect were the result of this occurence.
If you ntend on doing similar work like the Barrington Tops regularly then maybe look into a transmission cooler.

Regards Trevor.

AnswerID: 133015

Reply By: Exploder - Tuesday, Oct 04, 2005 at 18:24

Tuesday, Oct 04, 2005 at 18:24

Heat is the number2 enemy of the auto transmission, so fitting a oil cooler up front will not do it any harm, if anything it will be good for it

AnswerID: 133017

Reply By: snailbait - Tuesday, Oct 04, 2005 at 21:18

Tuesday, Oct 04, 2005 at 21:18

hi wally
i would fit more cooling for your auto tans also put synthec oil in the gear box and all other gears

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AnswerID: 133051

Reply By: uncle - Tuesday, Oct 04, 2005 at 21:42

Tuesday, Oct 04, 2005 at 21:42

Hi there Wally,we've just got over the exact same problem,we have an NF V6 wagon and the light was coming on enough to annoy the ya know what out of ya.Took the Paj to local auto trans experts in town and not only fitted a bigger cooler, but ran it in series through the old one also,there was enough room to fit another and all is well now.We tow a 1200kg van but will have a lighter 4x4 camper trailer later,to get to the out of the way spots.Just for the record coller and fitting all up was $300 I thought that was quite good.Cheers and good luck

AnswerID: 133058

Reply By: Truckster (Vic) - Tuesday, Oct 04, 2005 at 21:44

Tuesday, Oct 04, 2005 at 21:44

Extra oil cooler will cost you round $200-400 TOPS, cheap insurance.

AnswerID: 133060

Reply By: Chaz - Tuesday, Oct 04, 2005 at 22:17

Tuesday, Oct 04, 2005 at 22:17

Hi Wally,
What I do is lock the torque converter when towing up long hills. The trans runs at 70C, cooler than the engine. Manual lockup systems certainly arn't for everyone, but they do help your transmission to run cooler.
Chaz

AnswerID: 133065

Reply By: wally pajero - Wednesday, Oct 05, 2005 at 09:57

Wednesday, Oct 05, 2005 at 09:57

thanks for the reply lads shall fit a cooler with existing coolers and run synthec oil in trans
thanks again
wally pajero

AnswerID: 133117

Follow Up By: Exploder - Wednesday, Oct 05, 2005 at 18:22

Wednesday, Oct 05, 2005 at 18:22

Wally, Just be sure that the Synthetic transmission Fluid meet’s the Pajero’s specification’s I.E if it takes Dextron 3 Make sure the Synthetic fluid is a Dextron3 fluid.

I’m sure you know this, but I would hate for you to damage the transmission, as we know autos can be sensitive bits of machinery and the incorrect fluid can cause problems.

FollowupID: 387378