bmkj02

Hey Guys, My sister has a 1998 S70 Turbo and the Electric fan stays on after you shut off the car and take the keys out. She has had it for 2 or 3 years now and it never did that till recently. Any ideas what it is. Im confused cause if it was a bad relay or switch then how is the fan still getting the power after the key is out. The fan stays on for a short while then shuts off I guess when it cools off.

Rlpsctt

I have the same problem. Have you resolved this issue. If so, what did you have to do.

bmkj02

Nope not yet. I had other major mechanical problems so I had disregarded the problem for now. Havent been to concern with it for now. I did notice the harness on the temp sensor is all messed up so I am wondering about that and I am getting a code on it as well. Follow those wires. If I remember right when I disconnected it completelely the fan would shut off but again its been a while since I messed with it so I have to go back through it from the beginning. If you do find the problem please let me know.

Thanks

Rlpsctt

Thanks for your respond. Will keep you posted if root cause has been found.

Rlpsctt

Change the ECT sensor on the t-stat housing and the thermostat and that will fix it. I did this and it resolved the issue. My heater works properly and the fan only operates when the engine reaches the correct temperture. You will need a 40 TX bit, extension, ratchet, 19mm wrench and a screw driver. The sensor will cost around $50 and around $20 for the thermostat.