Question about 1996 Saturn SL

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Coolant fan does not have power. fan runs when jumped, 30 amp fuse is o.k.

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That fan has a relay and if you swap it out with another under the cover of the power distribution center, it may work-try the abs relay or the horn relay.

Posted on Mar 17, 2011


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How does the cooling fan run

The engine has to be at a temp level to set the coolant temp switch to on, located on the engine, block or head, depending on the engine. Once the switch is on it connects the circuit to the fan relay in the under hood fuse box, which power in turn travels to the another fan relay box attached to a bracket on the battery. the power is than transferred to one of the 2 fans. You can test by jumping the relay or powering the correct wires to the fan motor. Easiest way in my opinion is to jump the circuit in the fuse box with a paper clip. look at the relay for the relay on. I recall jumping from 85 to 30.

May 31, 2014 | 2002 Saturn L-Series

1 Answer


try pulling S19, 30 amp fuse. if nothing, try Fuse S4. if nothing, follow wire from fan to temp sensor and pull plug there. could be caused by shorted wiring. Also, there is a relay directly under the coolant expansion tank and if it's getting coolant spilled on it, that could be your "short".

Feb 13, 2014 | Volkswagen Jetta Cars & Trucks

1 Answer

My sons 2005 santa fe coolant fan does not come on after vehicle has been on. Is there a censor that could not be working?

Hi you can start by chek the coolant fan fuse and the conection for corosion . Allso you can chek at the fan un plug the pluging pout a jump willer wit a 10 amp fuse at the fan plugin at 12V and a jump willer at ground sid at the batery and fan if fan works fan is good if fan dos not work riplas fan. Allso you can worm up the car at normol oporation and test at fan conecter not the fan sid wit test light if light dos not com on the temperateur senser is folty riplas TMPS .

Jan 20, 2011 | 2005 Hyundai Santa Fe

1 Answer

Engine low coolant light on. looked for leak in engine compartment,none found. Topped off tank with red vw coolant. Went a few days and light came on again. This time a little fluid on garage floor....

You can idle the car up to operating temperature to see if the cooling fan engages. there is a fuse for the fan, it's a 30 amp breaker located in the fuse panel mounted under your hood right on top of your battery. Your Owners Manual should have an illustration.

Aug 29, 2010 | 2006 Volkswagen New Beetle

1 Answer

My carhas been over heating and i noticed my fan is not working on my ratiator. could it be just a fuse

Could be a fuse or a relay, could be coolant temperature sensor/fan switch. It could also be that the fan motor has failed. If the fuse is good, test the fan and relay by jumping pins 30 and 87a at the rad. fan relay socket. If the fan comes on, replace the relay and retest. You can also check for 12v signal and ground on the other pins when the engine is hot to verify the temp. sensor is operating normally. If no 12v or if there is no ground on the rtelay control pins (NOT 30 and 87a), the sensor is probably bad. If the sensor is good and relay is good, 99.9% chance the fan motor is bad, even if it starts when relay is bypassed. The motor takes more power to start than to keep running, and can disrupt operation of the relay if it is marginal. Also look for corroded contacts, esp. ground wire connections.

Jun 21, 2010 | 2001 Dodge Stratus

1 Answer

I have a 99 Jeep Grand Cherokee, that is running hot, cooling fan is not working has a ground doesn't have power. If I jump it out the fan works. What controls the power?

I have the same problem with my 99. I am going to try to jump it to test if it's the fan itself that's dead, which I doubt it is. If it works when I try to hard wire it then it's either the fan fuse, the fan relay or the temperature sensor that is bad. I am thinking I have a bad temp sensor which is what tells the fan to kick on when the coolant is warming up. If my fan works when hard wired then I am going to jump it off one of the fuses that is only on when the vehicle is running. I don't think it will hurt anything to always have the fan running while the car is running.

Mar 03, 2010 | 1999 Jeep Grand Cherokee

1 Answer

Does a 95 cutlass supreme have a fuse for the cooling fans or only the relays. I dont see a fuse for the cooling fans. Neither fan is coming on, Ive jumped the fans they both work, Ive changed out the...

There are three fuses and two relays for your coolant fan. They should all be in your underhood fuse box. They may not be marked "coolant fan", so check them all, (2) 60 amp , (1) 20 amp, (1) 15 amp. If all the fuses are good, you may have a bad fan switch (temp sensor). It tells the fan when to turn on, follow the wire from the fan motor to find it.

Dec 19, 2009 | 1995 Oldsmobile Cutlass Supreme

1 Answer

2002 Saturn SL2 A/C Not working.

I would test the A/C compressor clutch coil first , easiest to do . If the electromagnet clutch coil is bad ,the compressor won't engage . Pull the A/C compressor clutch relay an jump pin's 30 & 87 , where the relay plug's into the fuse box . If pin 30 has B+ voltage ,pin 87 sends that B+ voltage to energize the clutch coil . These clutch coil's can go bad . You could also check the cooling fan this way , pull the cooling fan relay an take a piece of wire an jump pin's 30 & 87 .If fan is good it will run . Do you know how relay's work ?
VEHICLE RELAYS Operation Diagnosis

The PCM controls both relay's by supplying a ground to energize the relay .
Is the check engine light on ?
Do you know what a wiring diagram is ? How to use one along with a DVOM - digital volt ohm meter to test automotive electrical circuits ? Not guessing ? This is how an automotive technician would solve this problem , hooking up a scan tool an checking for code's ,using bi-direction control of scan tool to manually try to turn on coolant fan ,A/C compressor .....
Free wiring diagrams here
Enter vehicle info. year , make , model an engine size. Under system click on engine ,then under subsystem click on cooling fans ,check the electrical circuit's .

Dec 17, 2017 | 2002 Saturn Sl

1 Answer

Cooling fans wont come on with out the a/c

First check all your fuses in both the under hood (60 amp) and right rear (10 amp) fuse blocks. Remove the low speed fan relay (in the under hood fuse box) and install a jumper across terminals #30 & #87. These are not marked on the box, but you will find these numbers identifying these terminals. With power at the #30 terminal, installing the jumper wire will send power directly to the primary fan. The fan should now run, if it doesn't, check it's ground wire, if that's OK, replace the fan.

Jun 15, 2009 | 1997 Oldsmobile Aurora

1 Answer


check with a 12 volt test light under dash fuse 10A and possibly a high amp fuse 30 or 40 amp under the hood. The PCM also controls coolant fan operation. Hope this helps

May 03, 2009 | 1999 Pontiac Firebird

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