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What relay ? where is it located ? Front right radiator support ,behind right headlamp ? An just so you know your vehicle has two fans , one you can see behind the radiator an the other you can't see . It's located in front of the radiator . One pusher an the other pulls ! The PCM - engine computer energizes the relays turning on the fans > The coolant sensor is an input to the PCM an when engine temp. reaches 212 degrees the PCM turns on the fans . If you had a factory scan tool you could see if PCM can control the fans , energizing the relays ! Go to http://bbbind.com/free_tsb.html free wiring diagrams ! Do you know what a wiring diagram is .
check cooling fan fuse or fuse link.it all is good. fan relay or engine coolant temperature sensor.could have ECM FAULT it controls coolant fan relay and coolant fan.code scan for ECM FAULT YOU WILL SEE CHECK ENGINE FLASH IF PROBLEM IN THE ECM.but check cooling fan hot wire it using jumper wires to battery.if fan okay replace engine coolant temperature sensor.
OVERHEATING CAN BE CAUSE BY MANY THINGS LIKE FAULTY THERMOSTAT AND FAULTY RADIATOR PRESSURE CAP,TOO MUCH WATER IN COOLANT SYSTEM NEED 50 / 50 WATER AND ANTIFREEZE.LOOK FOR WATER PUMP WEEP HOLE LEAK, IF COOLANT LEAKING OUT WEEP HOLE WATER PUMP BAD NEED REPLACING.CHECK FOR LOW COOLANT LEVEL, YOUR RADIATOR OVERFLOW JUG SHOULD HAVE COOLANT AT THE FULL COLD MARK IF NOT KEEP ADDING COOLANT INTO COOLANT OVERFLOW JUG UNTIL COOLANT STOP DROPPING AND FULL COLD MARK, IF OVERFLOW COOLANT JUG WAS EMPTY RADIATOR IS LOW ON COOLANT.WHICH CAUSE AIR IN COOLANT SYSTEM KEEPING THE ENGINE COOLANT TEMPERATURE SENSOR FROM BEING SUBMERGE IN HOT COOLANT WHICH TURN ON THE COOLANT FANS.WHEN ENGINE COOLANT TEMPERATURE GET CERTAIN SET TEMPERATURE LIKE 190 DEGREES THE PCM AND COOLANT SENSOR WILL TURN ON COOLANT FANS, IF VECHICLE OVERHEATING COOLANT FANS NOT WORKING EITHER YOU HAVE FAULTY ENGINE COOLANT TEMPERATURE SENSOR CHECK COOLANT FANS FUSE AND RELAYS. YOU CAN CODE SCAN CAR TO SEE IF YOU HAVE FAULTY PCM, FAULTY ENGINE COOLANT TEMPERATURE SENSOR OR FAULTY COOLANT FAN RELAY.IF COOLANT FAN AND ENGINE COOLANT TEMPERATURE SENSOR OKAY,YOU HAVE CORRECT COOLANT LEVEL IN COOLANT SYSTEM, THERMOSTAT AND RADIATOR PRESSURE CAP BEEN REPLACED, YOU COULD HAVE BLOWN HEAD GASKET CHECK ENGINE OIL LOOKS LIKE MILK SHAKE HEAD GASKET BLOWED ALSO WHEN HEAD GASKET BLOWED YOU CAN DRIVE CAR SHORT DISTANCE START OVERHEATING AND YOU LOOSE ENGINE POWER SUSPECT BLOWED HEAD GASKET.
SOUND LIKE ENGINE OVERHEATING,CHECK COOLANT LEVEL MAKE SURE YOUR RADIATOR FULL OF ANTIFREEZE.IF YOUR COOLANT OVERFLOW JUG IS EMPTY COOLANT LEVEL IS LOW.NEED ADD MORE COOLANT TO OVERFLOW UNTIL COOLANT STAY AT FULL COLD MARK. DONT OVER FILL COOLANT OVER FLOW JUG.IF COOLANT OKAY ENGINE OVERHEATING REPLACE THERMOSTAT.MAKE SURE ENGINE COOLING FAN IS WORKING IF YOU COME TO A STOP CAR SITS FOR A LITTLE WHILE START OVERHEATING THE COOLING FAN NOT TURNING ON , BECAUSE COOLANT FAN FUSE BLOWED OR YOU HAVE BAD RELAY,THE ENGINE COOLANT TEMPERATURE SENSOR FAULTY.IF YOU HAVE THE CLUTCH TYPE COOLING FAN, MAKE SURE WHEN TURNING CLUTCH FAN WITH HAND COOLING FAN SHOULD HAVE RESISTANCE WHEN HOT.IF CLUTCH FAN FEEL WOBBLY AND LOOSE REPLACE IT.TAKE VECHICLE TO AUTO ZONE OR ADVANCE AUTO PARTS OR ANY AUTO PARTS STORES THEY WILL CODE SCAN CAR FREE AND GIVE YOU THE CHECK ENGINE LIGHT TROUBLE CODE TO SEE WHAT CAUSING CHECK ENGINE LIGHT TO TURN ON.
COOLING FANS DONT TURN COULD BE FAULTY FAN RELAY.FAULTY PCM AND FAULTY COOLANT TEMPERATURE SENSOR.CODE SCAN FOR FAULTY PCM CODE AND A FAULTY COOLANT TEMPERATURE SENSOR.SEE IF ENGINE COOLANT TEMPERATURE SENSOR IS GIVING CORRECT COOLANT TEMPERATURE USING A CODE SCANNER.IF ENGINE IS 190 DEGREES AND THE ENGINE COOLANT TEMPERATURE SENSOR READING 100 TO 80 DEGREES COOLANT SENSOR IS BAD.HOT WIRE COOLING FAN TO SEE IF FAN MOTOR WORKS.BECAUSE COOLING FAN MOTOR COULD HAVE OPEN CIRCUIT CAUSING ELECTRIC MOTOR NOT TO TURN ON.
ok this might sound crazy but you say you smell coolant but never said if you checked to see if it was full posible bad coolant temp sensor or no coolant passing the sensor please more info on coolant usually if low coolant fan will stay on however you say you smell coolant. If the coolant sensor is bad fan wont command on it will have a high resistance a low coolant temps and low at high temps. I would check sensor since its obviously getting hotter than half way if you dont have coolant leak the relay behind the head light by the way is a common problem I would have just changed it if its original and it grounds to body thats why it is riveted however you can bolt them. Hope this helps check for thermostat opening at right temps to.
SOUND LIKE FAULTY IDLE SPEED CONTROL OR FAULTY FUEL INJECTOR OR A INTAKE VACUUM LEAK.IF GETTING HOT WHILE STOPPING.CHECK COOLANT FAN FUSE AND RELAY.IF BOTH GOOD.HOT WIRE COOLING FAN TO CAR BATTERY USING JUMPER WIRES.IF COOLING FAN DONT WORK REPLACE THE MOTOR.IF FAN WORKS.COOLANT TEMPERATURE SENSOR IS BAD.ALSO HAVE CAR SCANNED TO SEE WHAT CAUSING CHECK ENGINE LIGHT TO COME ON.
CHECK FUSE AND RELAY.IF ALL IS GOOD.HOT WIRE COOLING FAN USING JUMPER WIRES.USING CAR BATTERY.IF FAN RUNS.ITS GOOD.IF FAN DONT RUN.REPLACE FAN ELECTRIC MOTOR.ALSO SCAN IT. TO MAKE SURE COOLANT TEMPERATURE SENSOR IS NOT OPEN.MAKE SURE ENGINE COOLANT TEMPERATURE SENSOR AND COOLANT TEMPERATURE READS SAME ON SCANNER IF NOT REPLACE THE COOLANT TEMPERATURE SENSOR. SEE IF COOLANT TEMPERATURE IS BAD THE COOLING FAN OR FANS WONT RUN.