Unhooking the heater core on an ‘03 V6 Mustang

LLL

New Member
Feb 22, 2019
3
0
1
Corpus Christi, TX
Is it necessary to disable the airbag & remove the dash just to temporarily unhook the heater core. Can I use 2 bypass plugs for exit and entrance points to engine without taking out the dash? I’m new at mechanic-ing, lol.
 
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The 4.6 requires the coolant flow through the heater to work correctly. So do NOT disconnect and plug the heater lines. Instead LOOP the lines to each other instead. All of this can be done from inside the engine bay. No dash work required.