1999 Jeep Wrangler Outside air leaking into CAB

SMOOTIE

MEMBER
1999 JEEP WRANGLER
6 CYL
4WD
MANUAL
72,000 MILES

This winter I noticed that my heater wouldn't heat up the cab of my wrangler very well. My thermostat would be right were it needed to be at 218 and if I put my hands up to the vents the air was plenty hot. Then reciently the weather has been getting nicer where I don't have to run my heater and I noticed that even when the heating/air conditioning was turned off that I could still feel cool air at my feet. I tried looking under the dash but didn't see anything obvious as to where the air was coming from. Any suggestions?

1 Reply

MECHCURT

MEMBER
184 POSTS

This is a classic problem with jeeps, mostly older jeeps tho. If your top is on? Make sure there are no open floor plugs first. I dont know if you have carpeting bu you can slide underneath and check for holes in the floor board. Also look at the firewall and see if you can see holes. Another area is around the heater box or core. Some mechanics do not put the isnulation back in very well and if so then air can get in around the box. Some minimum expanding foam can be squirt around the heater element box and seal it up. Also be sure to not add to much ot it may get down to the door and make it unoperable. Hope this helps Curt