Hey guys, 1991 4Runner, manual transmission. Noticed a coolant leak at one of the brass plugs at the bottom of the radiator. The only thing I can think of that those plugs are for is transmission cooling for an automatic transmission. Which brings me to my next thought, and that is there isn't supposed to be coolant there. So I feel like there may be an internal leak causing coolant to be there. Correct me if I'm wrong please.

So any suggestions on a new replacement? Any pros or cons for one from RockAuto? I feel pretty sure it's the original radiator. As always, thanks in advance!

 

I think that you are correct.

I have an '89 with 22RE engine and manual trans. The original radiator sprung a leak and I had other issues with the cooling system. I ordered a Spectra from rockauto and a new Aisin water pump and new Toyota hoses and new hose clamps from somewhere, at 188,000 miles in 2019. It's 208,000 miles now and trouble free. I really should have bought new fan shroud too, but maybe next time, if I need to work on it again.

 

Yes, coolant coming out of the trans cooler lines is not good, give a search on radiator replacement and you’ll find lots of threads comparing different brands and types. I will add don’t cheap out, the plastic sided cheaper options are garbage, get something good

 

I tried the search before I posted. I always have trouble sifting thru the threads to find what I’m looking for. Maybe I’m not specific enough.

 

If you have a high quality OEM copper/brass radiator AND an old school radiator shop within a reasonable distance, maybe have them check it out. I have had good copper/brass radiators serviced or repaired. I still have an original radiator from my 88 and one from my 52 Ford. They can tell you if it is worth fixing and if so it usually includes removing the tanks and rodding out the tubes. If not they can give you some options for a replacement.

Good luck with your search.
Scott in AZ.

 

Good advice! I think there is a local shop. I feel pretty sure it is the original radiator