Question about Isuzu Trooper

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I have a small red puddle of transmission fluid on the garage floor after parking overnight. Just started. Only 36K miles but its a 2000 model. I want to know if I can fix it myself in a few hours or if I need to find a shop. I have heard that this is a minor problem and others have said it is the beginning of the end and to sell it now.

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  • ron1950 Aug 04, 2010

    Thank you Sir. You have been most helpful!



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You have a 10 year old car that has been driven an average of 3,600 miles per year. It has been doing allot of sitting around which may have cased the seals to harden. This is a more than likely a minor problem. Crawl under the vehicle and tighten all the transmission pan bolts snugly. Do not over-tighten them. Wipe all the fluid off the bottom of the transmission so you can see later on where the leak is coming from if it reappears if you cannot already tell. It is going to be a leak at the pan gasket or the front or rear seals. If it is a front or rear seal leaking, there are products to help stop a minor leak. Trans-X is as good at stopping leaks as any product and is what I would recommend you use if you see it is a seal leaking. You can get it at almost any auto parts store. Follow the directions on the can. If that does not stop the leak you will have to live with it or have the seals replace by a professional. Be sure and check the fluid level and add the correct fluid as listed in your owner's manual. Do not over-fill. Keep the transmission above the add mark at all times.

Posted on Aug 04, 2010

  • ron1950 Aug 04, 2010

    Thank you Clay! I am very please with your response. I Just performed a visual inspection and the leak is confined to the upper plug in the transmission pan. While this looks nothing like the description in the owners manual, I believe I am referring to the Transmission fill plug (the lower being the drain plug). I proceeded to tighten it and was able to make it move slightly, it was already very tight. Unless it is fooling me. I think this upper plug in the source. There does not appear to be any clean fluid anywhere else and only some minor dirty residue elsewhere.

    The owners manual show both of the plugs to be on the vertical side of the transmission and if what I am describing is correct, it is not the case, both plugs are on the Transmission pan and the fill plug is only a couple inches above the drain plug. Unlike the owners manual description, the heads of both plugs are horizontal with the floor.

    Furthermore, I understand that if this plug continues to leak (the fill plug) my transmission is ok because the level is still safe. if it were the drain plug leaking (or somewhere else), then I would need to continually check and maintain the level. Is this a correct assumption?

    Thank you for your help.

  • NOT ME Aug 04, 2010

    Yes your assumption is correct. You may have to remove the plug and replace the gasket to stop the leak. You have a minor problem which is a good thing.



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