Question about 2001 Jeep Grand Cherokee

1 Answer

Electric fan My problem is with the electric fan....when I first start driving the Jeep the fan will turn on and off, and the temperature gauge climbs quickly but doesn't go past half. Then as the Jeep warms up more the temperature gauge goes past half and the fan does not turn on at all. Could you help me with this problem.

Posted by on

  • yadayada
    yadayada May 11, 2010

    Have you changed the thermostat and flushed the system? This sounds like a T-stat problem to this expert.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Champion:

    An expert who has answered 200 questions.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 208 Answers

Or could be the electric fan temperature sensor by the thermostat. usualy 2 wires into a round sensor. that turns on the relay for the fan

Posted on Oct 10, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Hyundai Elantra temperature goes up to HI when air is turned on


There is an electric fan that should come on with the AC and run whenever the AC is on,if it doesn't come on it will heat up very quickly. Sounds like a problem with that radiator mounted fan.
The fan is supposed to come on when the engine gets hot enough also.
If so, the AC should be ok at hiway speeds.But you need the fan to work.

Jul 17, 2013 | Hyundai Motor 2003 Elantra

1 Answer

2009 Jeep Wrangler Sahara Unlimited, overheats while driving in off-road conditions (Sand). Dealer has checked for any leaks but everythign seems fine. The 4WD Shifter liankage has been replaced twice....


Your cooling system works by getting air flow over the radiator and good circulation of coolant in the radiator as well as other areas of the motor.
The fan for your radiaror is electric, but it is designed to run at different speeds depending on conditions. First, I would verify that the fan DOES run. Sitting in the driveway with the engine at operating temperature, turn the A/C on and see if the fan speed increases right away or increases after running for 10 minutes. It should have a higher pitched sound. Look at the temperature gauge again and see if it is still at operating temperature. If the temperature continues to climb, turn the heater on full blast and watch the temperature gauge, it should drop.
No increase in fan speed means you could have a module problem or other problem related to the fan speed. In your relay box, relay "K11" is the fan relay. The relay box is in the engine compartment. The underside of the cover will identify what relays go for what. Some Jeeps used 2 relays, 1 for low speeds and the other for high fan speeds.The fan and module are replaced as a unit. The PCM (power control module is the brain for the engine management system including the controling of the fan relays. Sometimes the relays are the same and you can swap them with each other to see if there is a change. Note: If the temperature is normal when you are driving down the road, than the cooling system is normal and it is the fan.
Good luck.

Aug 09, 2011 | 2009 Jeep Wrangler

1 Answer

4.0 litre ford motor not using any water but overheating not using oil either


I believe you have electric cooling fans which are part of your cooling system . First , remove your radiator cap and allow the engine to warm up to operating temperature . The cooling gauge needle must be close to half way. You want to make sure the thermostat is open . Slowly raise the RPM to about 1500 while watching the coolant . You should see movement of the coolant indicating the thermostat is in fact opening . Once you verify that is OK , the Nextstep is to verify that your cooling fans turn on . Put the radiator cap back on and continue to hold the engine RPM at about 1500 . As the needle on the gauge moves to the center or a little bit higher , the cooling fans should start up . If the needle continues to climb towards the red zone but the fans don't come on , your problem will be in the cooling fan circuit . I suggest having a professional diagnosis be done .

Nov 18, 2010 | Ford Aspire Cars & Trucks

1 Answer

2002 jeep gr. cherokee laredo overheats only when sitting at an idle, temp comes back down when heater and fan are turned on full blast as long as jeep is moving


you electric fan probably isnt working with vehicle warmed up lift hood and watch temperature gauge when it starts to over heat check to see that fan is working if not it could be the fan relay or fan itself if the fan does turn on its most likley the thermostat

Aug 11, 2010 | 2002 Jeep Grand Cherokee

1 Answer

Car overheated and antifreze was boiling and spewing over until engine cooled. 2004 jeep liberty 2wd. Thanks!


Need to know what caused the overheating, possible broken serpentine belt, thermostat, water pump, radiator, fan clutch, cooling fan motor. After motor has cooled down fill radiator with water till full, look make sure serpentine belt not broke, start engine run about 5 minutes, turn off, let sit 3 minutes, start engine look at temperture gauge is it over half way of gauge, Do you have a fan blade driven by water pump or electric fans?

Feb 10, 2010 | 2004 Jeep Liberty

1 Answer

I have a 95" model ford aspire. Right now am experiencing a problem on mostly the fuel gauge and the cooling fan. the gauge does not indicate the amount of gas, while the cooling fan does not run. What...


cooling fan has a relay. check it first. Then check the ECT, Engine Coolant Temperature Sensor. It is on the engine and sends a signal to the PCM, Engine Computer.
-----------------------------------------------------------------
Section 03-03: Engine Cooling 1996 Aspire Workshop Manual
DESCRIPTION AND OPERATION Cooling Fan, Electric sty~us~en~file=ani_caut.gif~gen~ref.gif WARNING: WHEN WORKING IN THE ENGINE COMPARTMENT, STAY CLEAR OF THE FAN BLADE. BECAUSE IT IS ELECTRIC AND TEMPERATURE SENSITIVE, IT CAN START AT ANY TIME IF THE IGNITION IS ON.
The electric cooling fan is an electro-drive type. Its operation depends upon engine temperature and ignition switch (11572) position. If engine coolant temperature reaches 97°C (207° F) and the ignition switch is in the ON position, the engine coolant temperature sensor (ECT sensor) (12A648) sends a signal to the powertrain control module (PCM) (12A650) which turns the engine cooling fan motor (8K621) and fan blade assembly on. Because it cannot operate unless the ignition switch is ON, the engine cooling fan motor and fan blade assembly does not operate after engine shutdown. The fan control relay (FC relay) is located in the LH front corner of the engine compartment, between the battery (10655) and the headlamp assembly. Circuit protection is provided by a 30A fuse labeled COOLING FAN in the main fuse junction panel to the left of the battery. If the vehicle is equipped with air conditioning, an additional relay is installed in the circuit. The A/C clutch control relay (19D572) bypasses the engine temperature portion of the circuit. The bypass circuit allows the engine cooling fan motor to operate whenever the A/C switch is engaged.
------------------------------------------------------------------------------------------
11deef4.gif ------------------------------------------------------------------------------------------
Fuel pump/sender access is through cover under rear seat.


Fuel Gauge

  1. Remove the instrument cluster. Refer to the procedure in this section.
  1. Using a jumper, connect the battery positive terminal to the fuel gauge "+" terminal and the battery negative terminal to the fuel gauge "-" terminal.
  1. Connect one lead of a Rotunda Instrument Gauge System Tester 014-R1063 or equivalent to the "F-U" terminal of the fuel gauge (9280), and connect the other lead to the "-" terminal of the fuel gauge.
  1. Adjust the instrument gauge system tester to the resistances shown in the illustration.


    767858e.gif

  1. If the fuel gauge does not operate as specified, replace the fuel gauge. If the fuel gauge is OK, return to the Pinpoint Test.


Fuel Level Sensor

  1. Remove the fuel level sensor (9275). Refer to Section 10-01 for the removal procedure.
  2. Measure the resistance between terminal A and terminal B of the fuel level sensor.

    Connector Shown From Component Side
c0c9791.gif

  1. Adjust the fuel tank float to the following positions:
80cc074.gif



  1. If the resistances are not as specified, replace the fuel level sensor. If the fuel level sensor is OK, return to the Pinpoint Test.
-------------------------------------------
3d2d29a.gif

Mar 27, 2009 | 1995 Ford Aspire

2 Answers

Engine overheating


Actualy check the clutch fan. It might still turn but its not engaging annd is having no effect in cooling the motor.

Mar 22, 2009 | 1997 Jeep Grand Cherokee

1 Answer

Over hearting


Hi Fooch!

Does the Jeep have electric radiator fans, or is it a conventional engine pulley mounted fan?

Your description sounds like fan failure, wherein the engine overheats when stopped or moving very slowly, due to not enough air being moved through the radiator to cool it down.

This can be confirmed by sitting stopped until the temperature goes up and then driving at normal road speed... if the temp comes back down, this is the problem.

With electric fans, this can likely be caused by a bad fan temp sensor, bad fan motor, bad fan relay, or by a wiring problem...among other possible causes.

With a mechanically driven fan, this can be caused by a bad fan viscuous clutch, missing fan shroud, or possibly loose belts.

A bug/debris clogged radiator will exacerbate the problem, whichever type fan you have, so a trip to the self-serve carwash to clean the radiator is not a bad idea, either.

Hopefully this will help and get Mom off your **** for breaking her car. Let me know how it goes or if you have more questions, and GOOD LUCK!!!

-WildBill

Jun 16, 2008 | 2003 Jeep Liberty

1 Answer

1996 buick regal over heating


Hi,
This sounds normal to me..... Except "runs to hot when idling"

When you're driving about (airflow over rad) all seems fine, but when sat in traffic idling - the fans come on to cool. Is the problem that even with the fans running, temperature still goes up - and fans never turn off again?

Is this the problem?

If it is, then the coolant pump may be badly corroded, not driving efficiently, or the coolant needs flushing and replacing.

Jun 15, 2008 | 1996 Buick Regal Olympic Gold

Not finding what you are looking for?
2001 Jeep Grand Cherokee Logo

Related Topics:

137 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...