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GQ 1992 TD42 NA lwb
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Discussion Starter · #1 ·
Gday guys not actually sure whats going on but moved the patrol in the back yard to get ready for the auto glazier to replace my windscreen parked her up made a cup of coffee came out and there is a puddle of ATF fluid under the vehicle and also some leaking from the breather along the wheelarch passanger side? Also notice oil is all the way up the dipstick? Transmission serviced about 4 months ago and just yesterday i checked all my fluids before heading out on my usual 1.5 hour drive, wtf is going on!!
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Discussion Starter · #3 ·
Possibly rear main seal blown due to blow by, open the oil cap to see if you have pressure release with engine on.


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Hi mate no there is no blowby what so ever, but i do hear like a gurgling noise coming from the passenger wheelarch?
 

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Discussion Starter · #5 ·
You have an auto trans I assume.

Have a look at the breather on the top of the box and see where it runs to. I am not aware of the factory spot, but engine bay sounds likely. Make sure your breather is not blocked.

The oil on the bottom of the gearbox has not leaked from the drain hole in the bottom of the bellhousing by the looks of it. It seems to be coming from where the housing bolts on to the gearbox. The breather on the RE4 is on the rear of the box, on the LH side, just in front of the extension housing. Seems unlikely that the oil would be coming out of there and then dripping off the bottom of the box. Also if the breather was blocked, you would not get ATF in the engine bay. Not looking good.

@JFF45 is our resident authority on the RE4, so perhaps he can help here.
Hi mate the breather goes to the engine bay and pokes through the passanger wheelarch which is where it also leaked from so ill rule out a blocked breather ive just washed her down after she is dry.ill start her up and see where she is leaking from..
 

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Discussion Starter · #9 ·
Gday @JFF45 , im completely lost mate, oil level is correct (even though ive just arked may dipsick on the battery and melted it🤬) only thing i can notice is once the vehicle is running the oil level is way too high on the dipstick and the dipstick is frothy like? Also the gurgling noise that i can here from the pasanger side when i turn her off ive never heard that before?? I have an external trans cooler.
Any ideas?
 

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Discussion Starter · #10 ·
Update, seems like a problem with the breather, ive just disconnected the hose from the breather on the bottom of the trans as it goes to a rubber hose, i blew air into the hose and the trans oil came out of the dipstick which explains the loss of oil from there, ran the vehicle shifted through gears with the hose off then turned her off and checked the level on my dipstick its low which its what it should be, now going to investigate more...
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Discussion Starter · #11 ·
Ok correct me if im wrong but it seems the breather should be a one way valve? So it should suck or blow but not both like mine is doing?
Also it seems like the breather for the diff is connected via T piece to the trans breather hose that goes to the wheelarch?.
So i connected the bottom hose to the trans again removed the pipe that goes through to the wheelarch blew in there and also sucked in and i was able to, also now im certain this is where my issue with the gurgling noise is!
So now how do i go about repairing it?
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Discussion Starter · #19 ·
I would drain the pan into a clean container and measure it. Should be 4 - 4.5 lts, then blow the breather clear and put the fluid back in through a fine gauze.
Ok mate will do that now👍
 

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Discussion Starter · #21 ·
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ok so howmuch oil? I cant check the level now as ive melted the dipstick in half lol, another on will be 6-9 weeks away...
 

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Discussion Starter · #24 ·
The fluid capacity total showing in your pic includes the torque convertor. When you drain the pan only, you get 4 to 4.5 litres.
Cheers mate ive put 5 ltrs in just to be safe, untill i get my new dipstick. Oe do you think drain half a ltr out?
 

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Discussion Starter · #25 ·
Seems alot better now will take it for a drive and see what happens, breather cleared no more gurgling noise after engine shutoff.
 

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Discussion Starter · #27 ·
Thanx alot mate i really appreciate your help, 👌👍 was shi##ing myself there for abit 😆
 

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Discussion Starter · #30 ·
If it helps, I can measure one of my spare dipsticks in relation to the outer tube (which can have varying lengths depending on vehicle) so you can make something temporary.

The length it dips into the pan will always be the same.
That would be great mate put my mind at ease 👍 cheers
 

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Discussion Starter · #33 ·
I was able to get to it earlier.
Distance from case where dipstick tube is inserted into pan is 130mm.

View attachment 536809


I measured my dipstick at 650mm and my tube at 520mm but your tube might be a different length so only the 130mm longer than the length of your tube matters.
Thanx mate👌
 

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Discussion Starter · #35 ·
@GQ bush man Transmission level is checked once the transmission is warm and gears have all been cycled through well, with the car running. Have you added to the level in recent times?
Hi mate yes a few months ago once i changed my trans cooler to a different one..
 
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