I have a 1998 Jeep Wrangler 4.0L 6 cylinder with 123,000 miles manual trans. Can you replace the front freezeout plug on the side of the motor without removing the intake and exhaust manifold.
Manifolds need to come off. The young fellow in the following video gives step-by-step instructions on a Cherokee 4.0 which will be essentially the same procedure for the Wrangler. (The real problem is dealing with the core plugs in back of the head and the engine block. Have to drop the transmission or take the engine out for those.) If one of them is leaking they probably all will go bad in relatively short order.
https://www.youtube.com/watch?v=-lgLtHgUFFc
That’s easy, … just go to the auto parts emporium of your choice and get a cheap universal block heater. It usually comes with a separate electric cord, but you just don’t use a cord. The heater installs right into that place of a missing frost plug. You don’t have to use it a block heater, … but you could if you don’t throw out the cord.
Easy-Peary,
F.S.
