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 redlights..is 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

3,240

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

3,240

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 3,611 nationwide Grand Cherokee listings starting at $3,500.

Postal Code:

Jeep Grand Cherokee Experts

  • #1
    inuevafreak
    Reputation
    2,150
  • #2
    Tom Demyan
    Reputation
    1,970
  • #3
    thejeepdoctor
    Reputation
    1,960
View All

Related Models For Sale

Used Dodge Durango
182 Great Deals out of 1,107 listings starting at $4,490
Used Ford Explorer
22 Great Deals out of 1,568 listings starting at $1,799
Used Toyota 4Runner
10 Great Deals out of 552 listings starting at $2,254
Used Jeep Wrangler
115 Great Deals out of 2,034 listings starting at $3,995
Used Chevrolet Tahoe
3 Great Deals out of 743 listings starting at $3,995
Used Ford F-150
646 Great Deals out of 10,068 listings starting at $2,995
Used Chevrolet Silverado 1500
193 Great Deals out of 10,075 listings starting at $1,995
Used BMW X5
43 Great Deals out of 951 listings starting at $4,500
Used Ford Mustang
16 Great Deals out of 1,078 listings starting at $3,995
Used Honda Accord
79 Great Deals out of 1,124 listings starting at $2,000

Used Cars For Sale

2018 Jeep Grand Cherokee Limited 4WD For Sale
604 listings starting at $43,659
2017 Jeep Grand Cherokee Limited 4WD For Sale
59 Great Deals out of 259 listings starting at $32,999
2016 Jeep Grand Cherokee Limited 4WD For Sale
21 Great Deals out of 189 listings starting at $29,753
2015 Jeep Grand Cherokee Limited 4WD For Sale
3 Great Deals out of 75 listings starting at $25,989
2014 Jeep Grand Cherokee Limited 4WD For Sale
90 listings starting at $22,995

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.