Well..the tensioner could have a leak...although I doubt that happened unless it froze and cracked recently.

On your tensioner..there is the coolant elbow and lower down there'* an o ring..there are also O rings where the heater hose connectors are sitting in the tensioner.

Now that they told you where to look..have you been able to see the leak yet?

i might have cracked the tensioner while taking off the nelt to change my crank sensor..
and no i still cant see the leak anywhere execpt under the car.. now fire stone said that the labor is only $58 but the part is $110 then plus tax.. now i looked for 4 hours and cant find a leak then i looked for another hour when i got it back from firestone and i still cand see the leak ecept it pooring out the bottom of my engine...

May I ask, how much did Firestone charge to replace your coolant elbow (how many hours labor)? And how long ago? Was this new leak apparent immediately after the elbow was replaced? And was this elbow done before or after your crank sensor replacement?

Unless they took off the entire upper end (UIM/LIM...at least 3-4 hours' labor) or the entire tensioner assembly (I dunno, 1-2 hours' labor?), they would have had to bend-and-wiggle that 90 degree plastic elbow into place, which could easily have cracked it, or dislodged it'* o-rings.

Upon prying the pieces of the old coolant elbow out, it is also possible they gouged the hell out of the aluminum sealing surface in the tensioner (or the LIM), which could cause a leak.

If they did take off the tensioner, it'* possible they didn't hook everything back up to it properly--or that they cracked it themselves.

Whatever the case, you need to pinpoint EXACTLY where that leak is. Meantime, find out exactly how the shop replaced the elbow...if they removed the tensioner, how did they not notice it was cracked then? I smell a potential cover-up...

firestone charged me $160 to replace the elbow that i supplied and they said it was a hour and a half labor. and the very next day after they replaced the elbow i checked my fluids and seen no antifreeze in my tank so i went back with the car and they said my tensioner was bad and causing the leak so i should let them replace it.. they then charged my another $220... $120 for the new bolt tensioner that they just so happen to have one right there in stock and $96 for a hour labor plus tax.
and they said they replaced the elbo by removing the alternator and the tensioner and the belt...