Question about 1998 Jeep Wrangler

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Frost Plug Hi I have a 1998 tj and I am losing radiator fluid from the frost plug, now my motor has a block heater in it I was wondering when I order a new frost plug if there is two kinds of them or do I order just a frost plug and then put the block heater plug into the new one?

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Core plug (aka slang freeze)
1 comes out to fit the core plug heater
what is the question. my guess heater seal is bad.
only you and look and see the extent of that damge
and cure. based on that.

are you abandoning this plug>????
heater out,the put in new stock core plug
ever done a plug before ?, takes skills. use a largest socket to hit it in.
TJ 2.5L or 4.0L engine
did you look at jeep at the parts page.

here ( no china crapp)

----------------next a heater.

Posted on Feb 10, 2017

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    2" plugs .420 lip
    4.0L jeep
    ask our counter man for them.
    walk in buy them.

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    _-__-___-_ Feb 10, 2017

    all great makers ,have them.
    including DORMAN , see the online catalog.
    costs nothing to look..


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The engine freeze out plugs are all one size. The block heater takes the place of a freeze out plug.

Posted on Feb 06, 2009

  • Fogeddabotit Feb 10, 2017

    No, they are NOT all the same size in a 3800 Series II engine. Must compare them to your VIN #.

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1 Answer

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Hi William:
3 possible sources I can throw at you:
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Where are the freeze plugs on a 96 dodge b2500 located?

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The frost plugs that block heaters go in are along the sides of the engine block. About midway up from the bottom of block where the oil pan mates to the top block deck. 3 or 4 on each side, 1 to 2 inch diameter round metal plugs just slightly recessed in the block. Look below the exhaust manifold, behind the exhaust pipe on the block. Frost plugs are easy to punch out as long as you can get to them.
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When you buy a block heater for your Tahoe, it will come with an instruction sheet, and a diagram of the preferred or recommended frost plug hole to use the heater in. It will also usually show the positioning of the heater element in the block-how to orient the heater into the opening so the element does not touch the block anywhere, but is placed in so the element is exposed in the water jacket of the engine. That make sense? You do not need a sealer, as the block heater has its own O-ring rubber seal. When inserted and tightened down (small wrench or socket, about 3/8 inch or smaller size, do not over tighten-follow sheet instructions), the o-ring should not leak. Be sure and clean that recess well that frost plug was in- get all the rust and scale off with rags or emery cloth (sandpaper).
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Hi and welcome to FixYa!

You may have worn out hose which can cause the coolant leak. I strongly suggest that you replace the hose to resolve the issue. The hose is surely secured by clams so you will need pliers to squeeze the **** then move it to let loose.

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raineman_15_16.gif If you are installing a new one notice the direction the block heater points when it goes into the block (upwards).

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