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

4,420

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 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

4,420

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 5,489 nationwide Grand Cherokee listings starting at $3,950.

Postal Code:

Jeep Grand Cherokee Experts

  • #1
    inuevafreak
    Reputation
    2,320
  • #2
    tennisshoes
    Reputation
    2,260
  • #3
    thejeepdoctor
    Reputation
    2,190
View All

Related Models For Sale

Used Dodge Durango
26 Great Deals out of 1,268 listings starting at $3,995
Used Ford Explorer
27 Great Deals out of 1,631 listings starting at $2,995
Used Toyota 4Runner
11 Great Deals out of 577 listings starting at $4,900
Used Jeep Wrangler
24 Great Deals out of 1,551 listings starting at $2,800
Used Chevrolet Tahoe
9 Great Deals out of 923 listings starting at $4,999
Used Ford F-150
104 Great Deals out of 12,316 listings starting at $352
Used Chevrolet Silverado 1500
79 Great Deals out of 9,374 listings starting at $3,995
Used Chevrolet Camaro
17 Great Deals out of 1,012 listings starting at $10,500
Used Ford Mustang
60 Great Deals out of 1,549 listings starting at $2,900
Used BMW X5
33 Great Deals out of 985 listings starting at $4,495

Used Cars For Sale

2018 Jeep Grand Cherokee Limited 4WD For Sale
4 Great Deals out of 990 listings starting at $36,750
2017 Jeep Grand Cherokee Limited 4WD For Sale
7 Great Deals out of 314 listings starting at $29,977
2016 Jeep Grand Cherokee Limited 4WD For Sale
80 listings starting at $25,495
2015 Jeep Grand Cherokee Limited 4WD For Sale
3 Great Deals out of 102 listings starting at $24,495
2014 Jeep Grand Cherokee Limited 4WD For Sale
104 listings starting at $18,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.