Question about 2001 Jeep Grand Cherokee

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It keeps running hot. I have a new radiator, new thremostat, new water pump and new fan. Is there a relay switch or fuse somewhere

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There is a radiator fan relay switch located inside the passenger headlight enclosure. You may to remove the front grill to get to it or cut a hole there and you will see the relay.Also in the fuse box under the hood there is another fuse. It might be labeled TCM. Hope this helps.

Posted on Aug 26, 2010

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3 Answers

Keeps running hot


OVERHEATING CAN BE CAUSED BY LOW COOLANT,TOU COULD HAVE TOO MUCH WATER IN COOLANT SYSTEM YOU NEED 50/ 50 MIXTURE OF ANTIFREEZE AND WATER TO RAISE BOILING POINT.IF COOLANT OKAY, IF VECHICLE OVERHEATING DURING SHORT DRIVE COULD HAVE BAD THERMOSTAT AND FAULTY RADIATOR PRESSURE COOLANT CAP. IF THERMOSTAT OKAY CHECK WATER PUMP IF WATER PUMP WEEP HOLE LEAKING.YOU NEED NEW WATER PUMP.IF VECHICLE OVERHEATING WHILE VECHICLE SITTING IN A LONG TRAFFIC LINE.CHECK TO SEE IF COOLANT FANS RUNNING IF NOT CHECK COOLING FANS FUSE AND RELAYS.IF ALL IS GOOD. YOU COULD HAVE ENGINE COOLANT TEMPERATURE SENSOR CODE SCAN FOR FAULTY PCM. HOT WIRE TO SEE IF COOLANT FANS WORK IF NO FAN MOTOR BAD IF YES COOLANT FANS WHEN HOT WIRED. FAULT COULD BE IN THE COOLANT FANS WIRES MAKE COOLANT FANS RECEIVING POWER IF NOT YOU HAVE BLOWED FUSE OR BAD RELAYS.

Sep 23, 2011 | 1998 Dodge Caravan

2 Answers

My truck keeps running hot. We change water pump, fuel pump, alternor, new belt, coolant temp sensor, and fan relay. Also A/C is not working so the fans wont come on. Is it another sensor in the truck...


Try connecting your fans directly to the battery to know if they are working. If they don't replace your fans. If they are ok, then change the thermostat.
Try this:
When engine cold, remove radiator cap, then fill the radiator with water and start the engine. If water jumps out of the radiator and continues going out as the engine warms up, then you have a bad head gasket and that's why is running hot.

Jun 29, 2011 | 2002 Buick Rendezvous

1 Answer

It's running hot, in the first 10 minutes


you can remove the thremostat and see if it is still running hot, if it is it may be your fan relay,fan motor,sensor or water pump.

Sep 11, 2010 | 2000 Chevrolet Venture

2 Answers

My 1991 mazda mx-6 resevoir coolant tank boils and spills out .


your electric cooling fan is not switching on that is either 1. you fan is bad which you can test jumping a hot wire to the pos side of the fan if it works then exclude it. 2. your fan works on a ground system there is a coolant fan switch in the head that can cause no fans, and the last 3. nfan relay or fuse bad

Aug 24, 2009 | Subaru Forester Cars & Trucks

2 Answers

93 lexus gs 300 overheats. i changed water pump, thermostat, radiator cap. still overheating??? what could it be???


Try blowing the radiator fins out (from the inside) with compressed air--bugs and other debris can clog the air flow. Do the radiator fan(s) run when hot? If not, check for blown fuse, seized fan motor(s), bad relay, or bad engine thermal sensor. Is it losing coolant water from somewhere?

Jul 16, 2009 | 1993 Lexus GS

2 Answers

I have a 1997 Volkswagen jetta and it keeps running hot the thermastat has already been taken out and the water pump has been changed what could be the problem


CHECK THE FUSE AND RELAY FOR THE COOLING FAN TO MAKE SURE IT IS OPERATING PROPERLY. HOPE THIS HELPS YOU. THANKS FOR USING FIX-YA. PLEASE KEEP ME POSTED. THANK YOU IN ADVANCE FOR AN HONEST RATING. BEST OF LUCK

May 09, 2009 | 1997 Volkswagen Jetta

1 Answer

Running hot


Radiator Fan Control Relay Switch. I bet your electric fan doesn't run?

Dec 01, 2008 | 2002 Nissan Altima

1 Answer

1990cad deville overheating


the first thing to check is to have the engine running. as soon as it reaches operating temp the upper radiator hose should get hot. if it doesn't then it's the thermostat. if it does then i believe your water pump is probably not circulating like it should and it should be replaced. however before replacing the wter pump make sure that the wire to sending unit is tight and not giving you a false reading. if your model has electric fans make sure the fans are running when the engine is hot. if they are not running check the relay in the fuse box for the fans with the engine running switch out the fan relay with the a/c clutch relay. ifthe fans kick on replay the relay with a new one. if they don't click on the it's either a bad wire or the temp sensor probe is bad. hope this answers your question. please rate this solution...thanks.

Aug 30, 2008 | 1990 Cadillac SeVille

1 Answer

1993 cutlass supreme run hot


A common problem is that the electric fan will not operate. You need to determine if the fan is coming on when the vehicle gets warm.

When you replaced the coolant, were you sure that you got all of the air out of the cooling system? If you have any air in the system, it will cause your system to run hot!

Regards

Brian

Aug 28, 2008 | 1995 Oldsmobile Cutlass Supreme

2 Answers

Car runs hot


CHECK YOUR RELAY IN YOUR FUSE BOX UNDER THE HOOD ON THE DRIVERS SIDE INNER FENDER. THE A/C AND THE HEATER RELAY ARE SAME. CHECK AND SEE IF THE A/C REALY WORKS BY TURNING ON YOUR A/C SWITCH. THE ELECTRIC FAN SHOULD START RIGHT AWAY. OTHERWISE YOU HAVE TO WAIT TILL THE ENGINE ACHEIVES OPERATING TEMP TO KICK THE FAN ON. IF ONE DON'T WORK AND OTHER OTHER DOES... SWITCH THE RELAY AND SEE IF IT WORKS. BEEN THERE AND DONE THAT. $9.00 FOR A NEW RELAY AT CHECKER AUTO PARTS.

Jul 29, 2008 | 2005 Pontiac Sunfire

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