Heater problems in 2004 jeep grand cherokee

Rmccloy
0

Asked by Mar 10, 2013 at 11:41 AM about the 2004 Jeep Grand Cherokee Special Edition 4WD

Question type: Maintenance & Repair

2004 jeep grand cherokee when i start it it it will not blow warm air.Soon as i start moving it blows warm air.Been happening for about a week.No smell or anything....heater core ,no smell.

2 Answers

dandyoun
96,805

Insure that your radiator, heater core and water levels are correct. and operating correctly. then check The dampers for the duct work of heating systems are controlled by vacuum. If at idle and car is at operating temp with heater on and you feel air coming out the vents but its cold and without touching any controls you start to drive and warm air starts coming out of them I would check for a vacuum leak going to the controller. As you drive faster the vacuum increases and will provide enough pressure to move the damper but at idle with the vacuum leak not enough pressure there to move it. This vacuum line will be coming from the intake thru the firewall to behind your heater controls. . Have to have heat in the heater core first.

4 out of 4 people think this is helpful.
Best Answer

Only thing I can add to that excellent answer is I think water pump failing, the impellers, if plastic, can wear, albeit a 2004 might be a little soon for that, and when you increase the rps of the engine while driving, the pump spins faster and coolant flows better through engine and heater core. However dandy's post is more likely.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Jeep Grand Cherokee Questions

Jeep Grand Cherokee Experts

#1 inuevafreak
inuevafreak
Reputation 1,680
#2 Tom Demyan
Tom Demyan
Reputation 1,510
#3 thejeepdoctor
thejeepdoctor
Reputation 1,440
View All

Related Models For Sale

Used Jeep Wrangler"
284 Great Deals out of 13,787 listings starting at $2,795
Used Ford Explorer"
923 Great Deals out of 63,563 listings starting at $995
Used Toyota 4Runner"
286 Great Deals out of 15,693 listings starting at $1,592
Used Chevrolet Tahoe"
796 Great Deals out of 34,311 listings starting at $1,500
Used Dodge Durango"
338 Great Deals out of 18,665 listings starting at $995
Used Ford F-150"
2,530 Great Deals out of 194,308 listings starting at $1,600
Used Jeep Liberty"
369 Great Deals out of 9,181 listings starting at $998
Used Chevrolet Silverado 1500"
1,907 Great Deals out of 127,084 listings starting at $1,999
Used BMW X5"
447 Great Deals out of 11,963 listings starting at $2,499
Used Honda Accord"
1,121 Great Deals out of 72,473 listings starting at $1,400

Used Cars For Sale

2017 Jeep Grand Cherokee For Sale
8,490 listings starting at $29,040
2016 Jeep Grand Cherokee For Sale
8 Great Deals out of 33,684 listings starting at $22,790
2015 Jeep Grand Cherokee For Sale
185 Great Deals out of 7,201 listings starting at $21,890
2014 Jeep Grand Cherokee For Sale
249 Great Deals out of 6,358 listings starting at $15,994
2013 Jeep Grand Cherokee For Sale
128 Great Deals out of 2,371 listings starting at $10,988