Question about 2004 Jeep Grand Cherokee

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Fan doesn't work

When I am driving, it doesn't overheat, only when I am idling it overheats.

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  • 1jrj Nov 18, 2008

    I have the same problem on my 2002 jeep liberty, I hot wired my fan and it works and the fuse is ok. But the fan doesn't kick on at idle or when it gets hot ?? Whats next

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Bad fan clutch. On mine it was moving so slow you could stop it with your hand.

Posted on Nov 12, 2008

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Change the Radiator Fan

Posted on Nov 01, 2008

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Posted on Jan 02, 2017

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1 Answer

This isn't the hottest it gets. It goes all the way up to almost the red. It's over heating and we have changed the water pump,


A water pump in itself WILL NOT cause and engine to overheat, if it leaks badly and the coolant level drop very low then this will indirectly cause the engine to run hot or overheat. What I see in the video clip is NOT overheating, the fan doesn't come on until the engine reaches about 230 Degrees Fahrenheit, that is pretty well up about where the needle is in the video, if the cooling fan never kicks on after about 20 minutes of idle or doesn't engage when the AC (this assumes the AC is working)n issue.

Oct 04, 2012 | Cars & Trucks

1 Answer

Overheats. runs fine when idiling.holding the fan off, and a/c on still cant make it overheat but once driving for 5 mins starts to overheat. replaced thermostat, water pump looks to be fine. cleaned rad....


Water pump. The impeller will slip on the shaft. As you said runs fine at idle, but when you run it harder the impeller doesn't spin fast enough (slips). Causing it to over heat. replaced to many for this problem. Also The pumps that have the metal impellers will be tight when cold, don't let this fool you. when they heat up they slip.

Jul 20, 2011 | Mazda B-Series Truck Cars & Trucks

1 Answer

Does the hose on the fill tank need a clamp or not? why does vechile overheat if the fill tank on the side is full?


A clamp might not be needed, this is not under pressure. It would not hurt to have one, but a simple spring clamp is adequate.
A vehicle can overheat for many reasons. When does it overheat most? During periods of slow speed, stop-and-go, and idling? Or during long high-speed drives on the highway?

If it is mostly idle and slow speed, check your cooling fan. Mostly they are thermostatically controlled, only turning on when needed. If this does not work, check the fan relay, fan motor, and fan thermostat.

If it overheats mostly at high speed, it is most likely that the radiator is partially plugged and needs to be backflushed, rodded, or replaced.

If it always overheats quickly after startup (less than fifteen minutes) it may be that your thermostat is not opening properly.

Aug 24, 2010 | 1992 Ford Explorer

2 Answers

Running hotter than normal looks like it started leaking bad under motor now


There is well-established procedure for trouble shouting the over heating.
Does the car overheat in driving mode?
Yes.
Are you losing coolant?
No. Check water pump (including belt) and thermostat.
If yes make a radiator compression test. You might have a bad cylinder head gasket.
The car doesn’t overheat in driving mode, but overheat in idle.
Does the fan runs?
No.
Check the fan assembly for a bad motor, loose fan blades, or bad connector.
Check the codes for a bad temperature sensor.
Check cooling fan relay and fuse.
If this isn’t enough to solve problem, then send the car at dealer for a “check and advice”.

Aug 24, 2010 | 2002 Chevrolet Malibu

1 Answer

My 2002 Kia Sportage overheats. I have replaced the Thermostat, sensors, hoses and radiator and it still overheats in stop and go traffic. If I drive down the street at 40 miles per hour or faster, it...


if your vehicle has electric fans they may not be working you need to check that they are working let the motor idle until it starts to overheat & see if the fans are working ,if not check for blown fuse,or loose wiring connections,it could also be the temperature sensor that activates the fans,it may be faulty......hope this helps.....sherrs

Jul 24, 2010 | 2002 Kia Sportage

1 Answer

Radiator fan doesn' run


If you can apply 12volts directly to the fan connection and it runs, then the fan thermostat is your problem. If a direct connection does not work, then the fan motor has failed and will need to be replaced.

May 03, 2010 | 2000 Mercury Cougar

1 Answer

Engine overheats while driving approx 20 mins - does not overheat in idle - radiator was changed (new)due to leak, thermostat is new and is installed correctly, new cap as well-could it be water pump? it's...


Check to see that the electric fan is coming on, there are two fans on this vehicle. The sender for the fan is right in front of the engine near the water housing, and is a common problem. Good Luck.

Sep 16, 2009 | 1999 Jeep Cherokee

2 Answers

Radiator fan will not turn on and car overheats.


Check rad fan relay & or fuse under hood in fuse/relay box on drivers side fender area. Map is on underside of cover.

Jul 12, 2009 | 1999 Dodge Grand Caravan

1 Answer

1991 geo storm still overheats even after changing thermostat


Over heat at idle or on the road? How long can you drive it before it overheats? Does the heater work? Do the fans work?

Jul 04, 2009 | 1991 Geo Storm

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