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

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07-23-2011 | 12:02 AM

notlogan

Thread Starter

Junior Member

Joined: Jul 2011

Posts: 3

From: red deer

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

07-23-2011 | 10:19 AM

oldfart

Senior Member

Joined: May 2010

Posts: 640

From: quebec

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

Are you sure all the vacuum hoses are connected?

07-24-2011 | 09:57 AM

CrazyWJ242

Moderator

Joined: Feb 2009

Posts: 889

From: New Brunswick

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