Question about 1996 Jeep Cherokee Sport

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My 1999 Cherokee Sport when key moved to Start there is a buzzing of ACS Relay. Electric engine cooling fan will start/stop until I start all the way. The car will then start but voltage sometimes drops from 14 to 9 and then stall. If I give it gas, voltage goes back up to 14. After switching out with new battery and ACS relay in fuse box problem continues.

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Alternators are known to go bad on jeep cherokees. I would try putting a new one in.

Posted on Aug 04, 2009

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I have a problem whit my jeep cherokee sport 1996 when it is running the temperature star to rise and in the middle of the range stop it. I have to wait until the temperature coming down and then star...


It is normal for the A/C air to warm up a little when stopped. Less airflow thru the condensor. It is normal for the engine temperature gage to rise up to about the 80% mark on its scale before the cooling fan kicks on. The gage will also show about the same reading on the first start of the day, until the thermostat opens.

Physically look in the radiator under the cap when cool, for coolant level, and check the valve in the cap for sticking. If air is present in the radiator it can't get out, and more coolant can't get in,(from the overflow). Either clean the cap or replace it and check that it is the CORRECT cap.
Radiator fins dirty, clean with a strong stream of water, not high pressure water.
Radiator clogged, try backflushing it, or replace.
Thermostat stuck open or shut, replace it.
Water pump worn out, can no longer move enough coolant, replace it.
Fan shroud broken or missing....
Electric Fan(s) not working, Check the fan, relay, fuse and engine temperature sensor's.
Belt driven fan, belt slipping, fan clutch is bad, fan blades have flattened out.

Air dam under front bumper is gone, loose, or broken. It actually has a purpose other than scraping on the driveway or curbs. It forces air up into and thru the condenser and radiator. If it's loose, airflow can actually push it out of place making it useless or blocking the airflow. Along with that, there may also be a plastic piece attached to the bottom of, and wraps up behind the bumper. If it's loose, airflow can actually push it out of place blocking the airflow. Simply reattach it with 4 or 5 screws.

Also, if the vehicle has A/C and electric fans, one fan is dedicated to the A/C and should come on almost the instant the A/C is turned on. The engine fan will run even with the key off, that is normal. The system is trying to cool itself. Hope this helps.

Aug 27, 2011 | 1996 Jeep Grand Cherokee

1 Answer

Hi my problem is that my 1999 grand cherokee over heath i was told that the problem is the cooling fan relay


It could also be the thermostat. If you can't hear/see the fan turn on though it is probably the fan. It should turn on when it gets up to temperature and turn off as the engine cools down. Start it up and watch under the hood to see if it turns on when the temp gets to normal...if it doesn't, whoever told you it was the cooling fan relay was right. The easiest replacement is the relay, if that doesn't work, it's probably the sensor that turns the fan on.

Dec 07, 2010 | 1999 Jeep Grand Cherokee

3 Answers

Cooling fan runs even after motor turned off


This is perfectly natural for the fan to continue running when the motor is turned off. I have seen them run for up to 15 minutes depending on how hot the day and the engine are. If it is not cutting off at all then you may have a problem in your heat sensor.

Jun 17, 2010 | 1999 Jeep Cherokee

2 Answers

Electric radiator fan wont turn on . but when fan is jumped with 12 volts fan works


heres a little test start vehicle turn a/c on high in the defrost position your fan should start if so than test hi low fan relay and replace coolant temp sender not sensor in some cases replace both thank u have a good day.

May 04, 2010 | 1999 Jeep Grand Cherokee

1 Answer

Electric fan on my 1999 jeep cherokee classic wont shut off after you turn ignition off what could be the issue?


the relay is maybe sticking.
or there is a call for cooling when the engine is off.

if the fan turns off after a min or two then its ok.

if the fan stays on and will not trun off ever even after 30 mins then the relay is staying on and needs to be taken out and replaced.

Apr 26, 2010 | 1999 Jeep Grand Cherokee

1 Answer

Electric radiator fan does not come on.


signal from temperature sender goes to the computer which then tells the relay to close. relay should have power at one leg which when contacts close, comes out the other leg and goes to the fan.

Jun 12, 2009 | 1999 Jeep Cherokee

1 Answer

I have a jeep cherokee 4x4 sport 95 4.0 litre. Wont stay running


check fuses in power distribution center near battery and auto shutdown relay

Apr 26, 2009 | 1995 Jeep Cherokee

3 Answers

Engine problems 1999 dodge neon sport 2.0 L 16 valve DOHC


if the cooling fans dont come on, it might need the fan relay replaced.
the relay is located on the frame rail right below the battery tray. the easiest way to accesss it is from underneath the car.

Jun 22, 2008 | 1999 Dodge Neon

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