Question about 1994 Jeep Grand Cherokee

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Your heater fan has a resistor/relay that has failed. It will need to be replaced. Look in the fuse panel to find the fuse for the Blower motor and remove it. That will stop the blower motor from running and killing your battery. The fuse panel cover should have a diagram of the fuses that will tell you which one it is. If the fuse diagram isn't on the panel cover, look for the fuse diagram in youe owners manual.

Posted on Dec 28, 2010


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91 Suzuki. Gsx750f . the cooling fan keeps running long time after engine is off runs long it drains the battery.Is a wiring thing& how do i fix it?(toht recharge or jump start the battery) thanx....

The reason why the fan runs on after the engine gets hot is that the engine needs to be cooled in order to prevent damage. It may be running for a long time on your vehicle because it is fairly old now. It may be that the entire cooling system needs an inspection and some maintenance, in order that the engine might be enabled
to run cooler.If this is done the fan should not need to cool the engine for a long period after it is switched off.

Jun 01, 2015 | Cars & Trucks

1 Answer

Cooling fan will not turn on

Does it overheat? Which engine does your jeep have? If it has the 4.0, then it has an electrical cooling fan and the control relay most of the times fries. Its hidden under the bumper cover under the right hand headlight (seen from drivers position). Many time this relay fries due to the fan which is drawing too much current.
If your jeep has the 4.7, then it has a hydraulic cooling fan. That fan always idles (300 rpm) when the engine runs and will ramp up when the engine temperature gets too high. There is a control solenoid for this fan, but when its bad, then you should have the check engine light. Check for fault codes using the key dance: ignition switch off/run three times and leave in run at the third time. The odometer will show "DONE" when all ok, or any fault code(s).

May 15, 2014 | 2002 Jeep Grand Cherokee

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Fan runs louder and longer than usual

the thermostat is more than likely failed or the water pump. plastic impellor has broken, the easy way to test is to feel the radiator if engine hot radiator cold the coolant is not circulating, the favourite is the thermostat easy to change, common problem.the fan is controlled by the ecm, the sensor being in the engine. not the rad,

Mar 22, 2014 | 2002 Jaguar XJ8

1 Answer

I have a 2006 Cobalt when I start it something always sounds like a fan runs after the engine runs for about 30 seconds and whatever sounds like a fan running only stays on for about 10 seconds. Can you...

I suspect that it is the operation of a viscous fan hub. Check this by placing your finger on a blade and seeing if you can spin the fan with the engine stopped. It operates when the engine is started and pumps silicone fluid from one side to the other inside the hub and when it has done so the fan slows down in relation to engine speed . Hence the fan noise on starting and then after a short period the fan noise goes away. It will start to operate again when the engine temperature starts to rise when you are stopped at lights or idling for a while to draw air through the radiator to cool the coolant and when you start moving and air is passing through the radiator again it will slow down. If you experience engine overheating while idling have it replaced as it is not pulling enough air through the radiator to do the job

Nov 30, 2013 | Cars & Trucks

3 Answers

Engine runs hot Ihave cleaned the radiator, replaced the cap, replaced the thermostat

First I have seen it happen before, is the spring side of the thermostat facing in to the engine, just had to ask, check your fan clutch, with engine off spin fan with your hand, should only turn about 3/4 of a turn, if it just spins freely bad fan clutch replace it.

Jun 09, 2010 | 1987 Ford Ranger

1 Answer

Ok. so do you mean the fan that runs with the

Your radiator fan turns on when the engine heat trips the fan relay.

Mar 10, 2010 | 1997 Toyota RAV4

1 Answer

My engine cooling fan runs even when the engine is turned off-Do you think it is as simple as changing the relay? Much appreciated, Joe B-

The engine fan circuit is separate from the ignition system and it is perfectly normal for the fan to sometimes be off while the engine is on and sometimes on while the engine is off. It should turn itself off independently. If it runs 24 hours a day without starting the engine then the relay or water temperature sensor will need replacing.

Nov 13, 2009 | 1992 Honda Prelude

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97 four runner 4cyl. Engine fan runs all the time

If the A/C is on, it is supposed to run all the time. If the A/C is off and it is still running all the time, then check the thermal relay. It is probably stuck in the closed position. The fix is to replace it.

Aug 09, 2009 | 1997 Toyota 4Runner

2 Answers

97 nissan sentra..... recently changed radiator fan & battery... car turns on fine.... when parked , i turn car off but engine and fan continues to run

some cars cooling fans run after you shut them off.if thats not it then i would check the fan relay it might be stuck open so fan runs all the time

Jul 25, 2009 | Nissan Sentra Cars & Trucks

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