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Cooling system leak help

Discussion in 'Stock 1995 - 2001 Explorers' started by wellcraft, February 14, 2018.

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    1. wellcraft

      wellcraft Active Member

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      I have a 99 explorer with the 4.0, I was doing a cooling system flush a while back and was out of town when a freeze came to our area, luckily the block didn't crack but I noticed it was missing a freeze plug in the passenger side, I put one back and added some water but found a leak in the water pump wich I'm fine as I new I needed to replace it as it was getting noisy, but I know I have another leak and can't figure out where is coming from. I see a constant flow of water in the back of the engine, transmission area if I look under the car. If I turn on the engine I see 2 water sprays from the back of the engine in the driver's side.
      Where that water could be coming from?
      Thanks in advance.
       
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    3. poker4me007

      poker4me007 Member

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      I don't know about the sohc but the ohv has a freeze plug in the rear of the motor between your engine and transmission...For your sake I hope this is not where the leak is coming from....

      looked it up seems the sohc has a rear one also...
       
      Last edited: February 14, 2018
    4. wellcraft

      wellcraft Active Member

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      Well, it looks like it is the freeze plug as I was able to tuck it and felt like one, I was able to use a mirror and a light and noticed is in a horizontal position an not vertical, also noticed like 3 threaded holes around it, like to hook up a water line or something, I saw 2 spots in there like bubbling so I'm sure is coming from there, engine wasn't running, I just put some pressure with the water hose and it worked.

      How difficult is to replace that freeze plug if I remove all the intake stuff, I have done it before so it's no issue for me but I would like to know if it can be done without pulling the engine or if the is a block off plate with bolts for that???

      Thanks.
       
    5. wellcraft

      wellcraft Active Member

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    6. koda2000

      koda2000 Explorer Addict

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      If you only popped a couple of freeze plugs, you need to go buy a lottery ticket. Freeze plugs are kind of a misnomer. They're not really there to protect your block and heads in the event of a coolant freeze. Usually the block will crack as well as the heads.
       

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