Vents not blowing as strong after Heater Core Repair

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Oct 30, 2012 | 07:27 PM

leichte

Thread Starter

Junior Member

Joined: Aug 2010

Posts: 74

Likes: 0

From: NC

Year: 1987

Model: Cherokee

Engine: 4.0

Vents not blowing as strong after Heater Core Repair

Replaced the heater core on my 87 XJ a couple of weeks ago. Ever since then, I've had a few issues with what is coming out of the vents. It seems like air is coming through but not nearly at the velocity it was before the repair. Also, I can hear the vent door shut or stick (not sure which one) when I put turn off the heat/air vent lever.

Not sure if I may have reconnected something wrong. Any ideas?

Oct 31, 2012 | 12:53 PM

SpunksterXJ

Member

Joined: May 2011

Posts: 183

Likes: 0

From: North Las Vegas, NV

Year: 1992

Model: Cherokee

Engine: 4L I6 MPI "Power Tech HO"

Quote:

Originally Posted by leichte

Does it sound like your fan is spinning like normal?

Oct 31, 2012 | 01:01 PM

Lowrange2

Junior Member

Joined: May 2008

Posts: 15,016

Likes: 11

From: +34° 25' 35.67", -81° 21' 12.04"

Year: 1993

Engine: 4.0

I'd guess something isn't lined up correctly from the repair...

Oct 31, 2012 | 04:43 PM

jfats100

Junior Member

Joined: Sep 2012

Posts: 38

Likes: 1

From: Denver, CO

Year: 2001

Model: Cherokee

Engine: 4.0L I6 MPI

Quote:

Originally Posted by lowrange2

I'd guess something isn't lined up correctly from the repair...

^x2

Did you make sure everything was put back correctly? In my HVAC box, there was a special spacer (separate piece of plastic that was removable) and fit around the heater core. It definitely had an effect on the airflow. Did you notice this?