Transmission Cooler Leaking
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Thread: Transmission Cooler Leaking

  1. #1
    FRESHMAN ROVER
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    February 5th, 2015
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    Long Island, New York
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    Transmission Cooler Leaking

    All:
    1998 Range Rover P38 Gems. I’ve been chasing down a number of leaks, including exhaust leak, oil cooler line leak and now what appears to be a transmission cooler leak. I replaced the center muffler today so the exhaust leak is gone. I also ordered the oil cooler lines for next weeks project.

    That brings us to the transmission cooler leak. I noticed fluid on the bottom of the radiator just below the thermostat. The fluid is red so I assume it is the trans cooler. How hard is it to replace the trans cooler? Where exactly is the trans cooler located. I can trace to cooler lines into the radiator but where does it sit? Is there a DIY?
    ROAR LION ROAR

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  3. #2
    SOPHOMORE ROVER xrav22's Avatar
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    Re: Transmission Cooler Leaking

    It is right behind the grill. If it is leaking it may need to be snugged up.
    1997 Range Rover 4.6 HSE
    1985 Chevy Corvette 5.7 TPI
    Nano Evolution II(fixes=paid for itself)
    4x SrS reset with nano
    P0183 changed fuel temp sensor OK
    P1179 cleaned maf with maf cleaner OK
    P1314 reset CEL OK (was going thru large puddles when CEL went on).
    Service Engine reset/Adaptive values reset

  4. #3
    FRESHMAN ROVER
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    Re: Transmission Cooler Leaking

    Thank you for the reply. I will remove the front grill and check it out and report back. I just bought a subscription to AllDATADIY for the 1998 Gems P38. Very helpful.
    ROAR LION ROAR

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  6. #4
    FRESHMAN ROVER
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    Re: Transmission Cooler Leaking

    Took off the grill and was able to check out all of the radiators. Appears that the Transmission cooler is leaking from the right side. Ordered up new transmission cooler, o rings and oil cooler pipes as were both leaking. Spent about $700 in parts in last two weeks. New center exhaust, oil, oil filters, transmission cooler, and oil cooler pipes.
    ROAR LION ROAR

  7. #5
    SOPHOMORE ROVER xrav22's Avatar
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    Re: Transmission Cooler Leaking

    Hey while you are in there make sure to check on this section of ac condenser. the rubber can harden and grind it down.
    I caught mine in time but since you are in there why not check it out.
    Transmission Cooler Leaking-20180618_124341_li.jpg
    1997 Range Rover 4.6 HSE
    1985 Chevy Corvette 5.7 TPI
    Nano Evolution II(fixes=paid for itself)
    4x SrS reset with nano
    P0183 changed fuel temp sensor OK
    P1179 cleaned maf with maf cleaner OK
    P1314 reset CEL OK (was going thru large puddles when CEL went on).
    Service Engine reset/Adaptive values reset

  8. #6
    FRESHMAN ROVER
    Join Date
    February 5th, 2015
    Location
    Long Island, New York
    Posts
    151

    Re: Transmission Cooler Leaking

    xrav22, what exactly am I looking for with respect to the rubber on the ac condenser?

    I got the tranny fluid cooler replaced without much issue. However, both of my oil cooler lines were leaking so I bought new ones. However, when I tried to get the old coolant lines off I ran into significant problems. I soaked the nuts with PB blaster and waited for a few hours and they would not budge. I was able to get the lines off at the filter housing area. So I gently secured the cooler in a vice and and patiently tried to coax them off. No luck. Then tried to heat and cool them. No luck. Tried tapping, tried and tried and tried. The after hours upon hours I applied muscle and waaa laaa the darn thing snapped off with the nut still snuggly attached.

    So I had to order and wait for a new oil cooler. Everything is now buttoned up and no leaks....so far.
    ROAR LION ROAR

  9. #7
    Moderator RRToadHall's Avatar
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    Re: Transmission Cooler Leaking

    both tranny and oil coolers are known for snapping fittings. If the the repair time sensitive, for a trip, I always order which ever cooler and new hoses at the same time. IF I luck out and can save a cooling unit I return it to save the customer money.
    "The power of good is always stronger than the power of non-good.
    The power of light is stronger than the power of darkness,
    the power of knowledge is stronger than the power of ignorance."
    ~ Maharishi Mahesh Yogi~

  10. #8
    SOPHOMORE ROVER xrav22's Avatar
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    Re: Transmission Cooler Leaking

    The rubber is attatched to your cover, but it will get haard and start scratching away at the corner of the condenser. I took a small chunk out and it is fine now. Yours may not be touching and has been taken care of. Best explanation is the pic above.
    Good Luck with pipes.
    1997 Range Rover 4.6 HSE
    1985 Chevy Corvette 5.7 TPI
    Nano Evolution II(fixes=paid for itself)
    4x SrS reset with nano
    P0183 changed fuel temp sensor OK
    P1179 cleaned maf with maf cleaner OK
    P1314 reset CEL OK (was going thru large puddles when CEL went on).
    Service Engine reset/Adaptive values reset

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