1997 850 GLT adiator cooling fan isn't working MVSOLVED

FullbrT · Post by **FullbrT** » 27 Apr 2015, 17:31

I am having a related issue. The fan will not come on, the car is getting hot. The fan works when directly powered. I tried grounding the pins for the yellow wires on the relay but got nothing. Installed new relay, no change. I don't know what to do and I'm getting tired of connecting/disconnecting the fan when I drive. Please help.

Post by **Ozark Lee** » 27 Apr 2015, 17:51

FullbrT wrote:I am having a related issue. The fan will not come on, the car is getting hot. The fan works when directly powered. I tried grounding the pins for the yellow wires on the relay but got nothing. Installed new relay, no change. I don't know what to do and I'm getting tired of connecting/disconnecting the fan when I drive. Please help.

Check for battery voltage on the large red wire to the fan relay. That wire should always be hot. There is no fuse but there is a "fusable link" in the red wire from that battery but if that fusable link opens up then the only real cure is to replace the wire with a new fusible link wire.

...Lee

FullbrT · Post by **FullbrT** » 30 Apr 2015, 04:27

Ok, I thought so but what does the other end of that fusible link wire attach to? I traced it down as far as I could and it seems to go into a conduit and toward the ecu. I haven't been able to find any info about it online beyond that it exists and that if its bad you have to replace it.

Post by **Ozark Lee** » 30 Apr 2015, 07:34

I'm pretty sure that the other end of the wire goes to the starter, the second terminal that ties on with the battery cable at the solenoid. You might be able to splice in a new fusible link but the trick is to find the correct spot in the wire to cut the old one out. I have not seen an amperage rating for the link and you would need to know that to buy a replacement.

Has the starter recently been replaced? It is possible that the wire never got hooked back up. The starter would still work fine without it.

...Lee

FullbrT · Post by **FullbrT** » 30 Apr 2015, 09:15

I did just replace the starter but I'm pretty sure I got everything hooked back up... That was actually my first thought and I looked but didn't see anything loose. Do you know how many cables should be on the pos and neg terminals? Maybe I put it on the wrong terminal.

Post by **Ozark Lee** » 30 Apr 2015, 16:57

As I recall there are a total of three wires. The battery cable, what appears to be the power source for the fan, and the start signal from the ignition switch. The large battery cable wire and the fan wire go together on the same stud and then the small ignition switch wire goes to the other terminal. Ground (negative) is back through the block.

...Lee

FullbrT · Post by **FullbrT** » 03 May 2015, 14:04

So, it seems as though I did put the power to the relay on the wrong terminal. It is a white wire, so there should be three wires on the positive starter terminal and nothing but the built in cable from the solenoid to the motor on the negative. So there was never any reason at all for me to even take the but off of the negative side. Live and learn I guess. But I got her all up and running again. Thanks for your help.

Post by **shiloh51933** » 31 May 2015, 09:18

FullbrT wrote:So, it seems as though I did put the power to the relay on the wrong terminal. It is a white wire, so there should be three wires on the positive starter terminal and nothing but the built in cable from the solenoid to the motor on the negative. So there was never any reason at all for me to even take the but off of the negative side. Live and learn I guess. But I got her all up and running again. Thanks for your help.

Human error huh, good u got it back to normal.