Thermostat?

Asked by Feb 09, 2015 at 07:24 PM about the 2005 Jeep Grand Cherokee Limited 4WD

Question type: Maintenance & Repair

I have a 2005 Jeep Grand Cherokee Limited 4.7L. It ever heats on short trips but when
you go on longer trips it is fine until you have to stop then starts to overheat very quickly.
When you turn on the car on it says to service system and service 4WD. Is it the
thermostat. I tried to look it up on the net and every link that was posted not what I
needed. I put specifics in for the search such as year, 4.7L but comes back with wrong
year, wrong model or wrong engine.

5 Answers

515

The electric fan may not be working. There is a relay/heat sink mounted to the frame up front that fails quite often. When you are traveling at highway speeds the air through the radiator may be enough but when you are stopped or going slow the engine will heat up without the electric fan running. Run the truck stopped and when the temp starts rising look under the hood to see if the electric fan turns on. If it does not, that is your problem.

Thank you for your answer. Can you tell me what that mount looks like and which side it is on? I'll try to look it up. I know the fan comes on when it heats up though.

Ok. I checked the electric fan and it works. Along with overheating the heat stops working and blows cold air out also

15

sounds like the fan relay switch. To test it, start the car and turn your A/C on full crank, in about 2-5 minutes your fan should turn on.

Thank you. My husband and I decided to check the fluids on a whim and it turns out that the radiator when low on coolant. Since we added coolant we have no had any problems with our Jeep. The heat stays on and the car does not overheat or get close to it. The fluids will be the first thing I check from now on.

Your Answer

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 70,648 nationwide Grand Cherokee listings starting at $1,045.

ZIP:

Jeep Grand Cherokee Experts

  • #1
    inuevafreak
    Reputation
    2,120
  • #2
    Tom Demyan
    Reputation
    1,890
  • #3
    thejeepdoctor
    Reputation
    1,830
View All

Related Models For Sale

Used Jeep Wrangler
314 Great Deals out of 16,229 listings starting at $2,500
Used Ford Explorer
858 Great Deals out of 63,389 listings starting at $995
Used Dodge Durango
305 Great Deals out of 21,420 listings starting at $2,195
Used Toyota 4Runner
299 Great Deals out of 21,851 listings starting at $1,700
Used Dodge Charger
440 Great Deals out of 27,829 listings starting at $1,979
Used Chevrolet Tahoe
652 Great Deals out of 39,510 listings starting at $1,000
Used Ford F-150
2,317 Great Deals out of 183,061 listings starting at $1,000
Used Chevrolet Silverado 1500
2,129 Great Deals out of 167,340 listings starting at $1,995
Used BMW X5
440 Great Deals out of 12,266 listings starting at $2,000
Used Ford Mustang
725 Great Deals out of 38,316 listings starting at $895

Used Cars For Sale

2018 Jeep Grand Cherokee Limited 4WD For Sale
7,087 listings starting at $36,042
2017 Jeep Grand Cherokee Limited 4WD For Sale
30 Great Deals out of 8,146 listings starting at $30,000
2016 Jeep Grand Cherokee Limited 4WD For Sale
740 listings starting at $34,147
2015 Jeep Grand Cherokee Limited 4WD For Sale
64 Great Deals out of 2,041 listings starting at $19,365
2014 Jeep Grand Cherokee Limited 4WD For Sale
67 Great Deals out of 2,763 listings starting at $16,995

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.