my 2003 grand cherokee recently started running hot only at redlights & slow traffic on 80+ degree days.If A/C is on it blows warm air at this a tempature sensor issue?

Asked by Aug 12, 2017 at 10:48 AM about the 2003 Jeep Grand Cherokee Limited 4WD

Question type: General

/after driving at normal speeds the temp guage reduces to normal & A/C starts
blowing cold again..

5 Answers


Are your fans running? Look at fans first. If they are not you can test them by directly hooking them up to 12V. No particular polarity because they are DC motors. If they work check fuses and relays associated with fans. Yes it could be temperature sensor.

1 of 1 people found this helpful.

fan doesnt work while idling....but seems to come on when driving.Am not experienced n hooking up to 12 volt power supply

any suggestion appreciated!

btw fuses ok


Do they both (fans) come on when you turn AC on? They should. Give them up to a minute to come on. If not then they are bad. To hook up to 12V. Get 2 wires with alligator clips on each end and disconnect the pigtail at each fan and clip on each terminal of one fan at a time and then touch one wire to battery positive and one to battery negative. It should be instant running. You cannot hurt the fan motor. Do this with car off. Make sure to plug fans back into their pigtails if they are obviously good.

Your Answer

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 3,023 nationwide Grand Cherokee listings starting at $3,500.

Postal Code:

Jeep Grand Cherokee Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Dodge Durango
102 Great Deals out of 1,072 listings starting at $1,888
Used Ford Explorer
50 Great Deals out of 1,448 listings starting at $2,995
Used Toyota 4Runner
498 listings starting at $3,990
Used Jeep Wrangler
109 Great Deals out of 1,775 listings starting at $6,950
Used Chevrolet Tahoe
5 Great Deals out of 738 listings starting at $899
Used Ford F-150
501 Great Deals out of 10,105 listings starting at $1,800
Used Chevrolet Silverado 1500
199 Great Deals out of 10,713 listings starting at $1,700
Used BMW X5
30 Great Deals out of 792 listings starting at $1,000
Used Honda Accord
81 Great Deals out of 951 listings starting at $1,815
Used Ford Mustang
8 Great Deals out of 1,017 listings starting at $4,500

Used Cars For Sale

2018 Jeep Grand Cherokee Limited 4WD For Sale
216 listings starting at $54,740
2017 Jeep Grand Cherokee Limited 4WD For Sale
32 Great Deals out of 153 listings starting at $34,494
2016 Jeep Grand Cherokee Limited 4WD For Sale
17 Great Deals out of 254 listings starting at $31,500
2015 Jeep Grand Cherokee Limited 4WD For Sale
80 listings starting at $28,999
2014 Jeep Grand Cherokee Limited 4WD For Sale
105 listings starting at $19,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.