Help with a cooling leak?

[metosend]

I have a 94 explorer and it leaks from the back on the pass side...but not always? I drove home the other night no prob...but on the way back to work the next day it did it again? Tried stop leak but didn't help...freeze plug and if so how do I get to it? thanks todd metosend@gmail.com

 

[JTX]

Either a freeze plug or the heater core. There both in that general area. See if you can determine where exactly its coming from.

Welcome to the site!

 

[metosend]

stops and starts?

Whats strange is when I put in the stop leak and filled it with water I let it run for like 30 minutes with no leak...but then it came back...and when it does leak it is a fast leak...very strange...would not a leak like leak all the time? does this give a clue to the problem?

 

[BrooklynBay]

Welcome to this forum! Some leaks occur when the cooling system builds up enough pressure. You should get a cooling system pressure tester from Autozone's tool loaning program.