My radiator started leaking yesterday, so i look to see where it was leaking from. On the bottom of the radiator where there is a flange (threaded) with 2 nuts on, one of the nuts was loose and i took a wrench and tighted it and it stopped leaking, but then when i started my car and drove to work, my temp gauge started to go up near the H mark, when i got to work, i looked under the car and it was leaking from the same place and its tighted too. what do i have to do to fix this leak? replace any thing? washers maybe?? any???

 

if the radiator is stock then its got plastic ends, which means the 2 nuts your taking bout are probably the transcooler lines, and if its leaking coolant then the radiator has a hairline crack since the trans cooler and lines are separate from the radiator(the trans cooler is located in the bottom end cap and is cooled by the radiator coolant like a mini radiator inside a big radiator) id recommende a new raditor rather then messing with a crack in the location. now if its an aftermarket with metal caps in which case you might be able to repair the crack by either brazing, or using J-B weld, marinetech or anything else you can think to seal the crack, but the hassle of taking it out, cleaning it, and then trying to repair it you'd be a lot happier to just install a new radiator anyways, then run around $80- 140 depending on your location and parts buying ability.

 

New radiator and coolant $150

Replace overheated motor $1500

 

second the new radiator.

and hondadude is dead on with his price analysis!

 

yea i got the stock radiator, so j-b weld is out the question. there is no other material to seal the crack?

 

nope, the whole corner is cracked out. Even then man, we're talking about the lifebreath of your car. I personally wouldn't take my chances on an $85 part causing my engine to overheat itself to death.