replaced heater core, put back together, now theres no heat... can anyone help?
 

2000 grand cherokee i replaced my heater core, hooked it all back up and plugged it in. ran the jeep for 15 minutes and it still blows cold. sounds like i missed something? let me know what you think

Re: replaced heater core, put back together, now theres no heat... can anyone help?
 

Are you sure all the vacuum hoses are connected?

Re: replaced heater core, put back together, now theres no heat... can anyone help?
 

yep, make sure all the vacuum lines are connected, make sure you top up the fluid in the rad aswell... dont forget theres a bleeder on the 4.7 that has to be opened for the coolant system to fill properly, (i usually use a small funnel and fill from there.)

did you install new seals inside? perhaps it could be preventing it from opening back up again

Re: replaced heater core, put back together, now theres no heat... can anyone help?
 

Is the heater blowing air out of all positions?