2007 Jeep Wrangler Cooling system

BSENECA

MEMBER
2007 JEEP WRANGLER
0.5L
6 CYL
4WD
AUTOMATIC
120,000 MILES

My jeep is running hot. I changed the thermostat and water pump and did the whole heater core flushing system. And when I turn on the heater I get condensation coming through the vents. Could the fan be the problem if it doesn't come on once it starts to run hot?

4 Replies

HMAC300

MECHANIC
48,601 POSTS

It cold be the fan check items in pic to see if they are good and check for cold spots on radiator when hot if you find any then the rad is bad. Also have it pressure checked

Was this

answer

helpful?

Yes

No

Wednesday, July 8th, 2015 AT 12:20 PM

HMAC300

MECHANIC
48,601 POSTS

Forgot pic

Image (Click to make bigger)

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Wednesday, July 8th, 2015 AT 12:21 PM

BSENECA

MEMBER
11 POSTS

Ok I checked the fuses, all good. Also I changed the radiator a few months ago. The only thing I haven't changed is the heater core. Would the heater core being bad cause the problems I listed and could I bypass the heater core by disconnecting it perhaps?

Was this

answer

helpful?

Yes

No

Wednesday, July 8th, 2015 AT 1:10 PM

HMAC300

MECHANIC
48,601 POSTS

The condensation could be the heater core or the drain for a/c plugged so try unplugging that you'll have to look under the car. Or at bottom of firewall it's item 1 in pic run a wire through it to see if it's plugged. If not plugged then bypass heater core. But it's not causing your overheating. Have it pressure checked for internal leaks like a head gasket.

Image (Click to make bigger)