[Guest]

I recently purchased a 2000 Wrangler Sport. It has the 4.0L engine and 3 speed automatic. I noticed the top of the radiator (where the plastic top fits onto the metal body) seeps antifreeze until the engine warms up enough for the thremostat to open

I have not seen this on any other vehicle is this an indication the radiator cap needs replacing?

 

[Jim_Lou]

Plastic tank leaking at the seam to the core means that the radiator needs attention. A radiator shop can take it apart, replace the seal - a big O-ring - and put it back together for you. You can also probably find a new aftermarket radiator with brass tanks for a couple hundred bucks. That's what I would do.

The tank shouldn't leak, even if the pressure cap is related to your problem, which I doubt.

 

[251]

if it isnt too nasty, and you want to buy some time, try some of that radiator stop leka stuff..

it works suprisingly well on smaller leaks and pinholes.. about $2.50 a bottle.

other wise, as already said, have a shop repair, or better yet put that money towards a better radiator ( NO PLASTIC TANKS haha)

 

[Guest]

I ran the Jeep today up to operating temperature and there was no leak or seeping. This Jeep was at teh dealer for several months before I bought it. I am begining to believe the problem was simply a dried out gasket. I will keep an eye on it though. thanks for the reply and suggestions.

 

[Guest]

Mine had a small leak, and before I replaced the radiator, I tried the stop leako stuff, and it actually worked. I just poored it in and let the engine idle for about 30 minutes and presto. Dont know how long a fix but heh, it was cheap

 

[Guest]

Just FYI, according to Jeep this is a common problem for the plastic top tank radiators. If you happened to buy their extended warranty it should be covered. If not I suggest you replace it with a "real" radiator instead of resealing the plastic tank back on. I replaced mine on my 97 TJ and haven't had a problem since.