DesertComanche86 Posted February 26, 2023 Share Posted February 26, 2023 Hey guys, I noticed a coolant leak (a lot) coming from the bottom of the transmission. Any ideas what it might be? I attached some pictures. Link to comment Share on other sites More sharing options...
fiatslug87 Posted February 26, 2023 Share Posted February 26, 2023 Is your water pump weeping and the coolant is running down and towards the trans? What year? Open or closed system? Link to comment Share on other sites More sharing options...
mjeff87 Posted February 27, 2023 Share Posted February 27, 2023 There's an expansion plug on the rear of the head....run your hand around back there and see if it's wet. There's also one in the rear of the block, behind the flywheel/flexplate (unfortunately) that might be leaking. Link to comment Share on other sites More sharing options...
coolwind57 Posted February 27, 2023 Share Posted February 27, 2023 4 hours ago, mjeff87 said: There's an expansion plug on the rear of the head....run your hand around back there and see if it's wet. There's also one in the rear of the block, behind the flywheel/flexplate (unfortunately) that might be leaking. Yea man, you're right. I replaced all of my freeze plugs a couple years ago and those two on the backside of the engine aren't so fun to replace. I pulled the transmission completely and jacked the truck up so that I would fit back there in the firewall in a sitting position to do my thing. If this is indeed DesertComanche86's problem, then I'd recommend replacing all freezeplugs. If that's the case, run a garden hose to flush out the block after you get them out. I could not BELIEVE the sediments that came out of there! HUGE amount that formed a pile in my driveway, no kidding. Link to comment Share on other sites More sharing options...
gogmorgo Posted February 27, 2023 Share Posted February 27, 2023 Second on what they said. But I’ve also had coolant run down towards this spot on my 2.5 due to a crack in the block by the driver’s side motor mount. Hopefully it’s not that. Look forwards and up generally to find the source of the leak. Link to comment Share on other sites More sharing options...
jpnjake Posted February 27, 2023 Share Posted February 27, 2023 Here’s a picture of those plugs for reference this on an HO Also note the drain plug next to the freeze plug Link to comment Share on other sites More sharing options...
DesertComanche86 Posted February 28, 2023 Author Share Posted February 28, 2023 Thanks to all of you for this info. I'm gonna have to look into those plugs. Link to comment Share on other sites More sharing options...
mjeff87 Posted February 28, 2023 Share Posted February 28, 2023 LOL, sediment is an understatement. I used a shopvac and several different screwdrivers to clean out the insides of the block around the water jackets when I did mine. Of course, the engine was on a stand at that point, made it alot easier. There were CHUNKS of crap stuck inside. Link to comment Share on other sites More sharing options...
cruiser54 Posted March 1, 2023 Share Posted March 1, 2023 Link to comment Share on other sites More sharing options...
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