Radiator Leak

[spidertri]

So I bought a new radiator from the ebay guy AC Imports to complete my cooling system refresh. I got it installed easily enough, bled it and all was good. I then drove back to school (60 miles) and watched the temp needle like a hawk, no signs of overheating.

I drove to class the morning after and noticed the needle was slightly above center (half the needle was on the center tick mark and half was not) figured it needed to be bled again after the long drive and I'd wait until after class to do it when the engine was cool.

I got back to the car and popped the hood to find the level of coolant in the expansion tank about an inch and a half below the cold line. Looked under the car and saw a puddle on the passenger side of the radiator. Turned out the sensor that is on the passenger side was leaking.

The radiator came from AC with a plug and o-ring in there, the stock radiator didn't have the o-ring so I, mistakenly, opted not to use it. My reason was the threads on the sensor went all the way to the body whereas the threads on the plug did not.

I figured it wasn't a big deal though as I could pull out the sensor stick the o-ring on there and put it back in without loosing too much coolant. (I had a gallon of 50/50 in the hatch too.) I went to loosen the sensor and it just spun in the hole, I'm guessing the helicoil broke loose and now it just spins...

Obviously I could and should just get a new radiator but that is going to take about a week. Can you guys think of a way that I can seal this up in the mean time?

I was thinking about some JB weld or a silicone sealant but that would probably mean I would need to buy a new temp sensor along with a new radiator.

Any thoughts? Sorry for the novel.