4.0L freeze plugs
#1
#6
Join Date: Dec 2008
Location: Plattsburgh, New York
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Its not hard at all but replace everything. I've done a couple of the OHV's. Theres a write up on www.RangerPowerStation.com
#9
Join Date: Dec 2008
Location: Plattsburgh, New York
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Here. Its a simple fix as long as you have tools. I usually do a coolant flush and change the thermostat.
http://www.therangerstation.com/Maga...11/gaskets.htm
http://www.therangerstation.com/Maga...11/gaskets.htm
#10
It might be the thermostat housing. I just had to replace mine. 2003 w/ 4.0 SOHC. I do not know if the set up is the same. I had coolant dripping back ontop of the engine block behind the thermostat. My mechanic said the freeze plugs rarely ever go bad on the newer engines. So I would check the thermostat housing. They do crack and the dealership says they replace them all the time because they are made of cheap plastic. Hope this helps.
#11
#12
I haven't replaced freeze plugs on a 4.0, but have done the job on V8's. They should be on the sides of the block in the motor mount area, you usually have to undo the mount, jack the engine up, and remove the half of the mount that bolts to the block. There isn't much room to work, but sometimes you can drill, put in a sheet metal screw, and pop it out with a craw hammer. Other times you can drive a screwdriver through it if it's rusty enough and pop it out.......not one of my favorite jobs.LOL
#14
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