1999 s80 t6 fan problem

jav24 · Post by **jav24** » 30 Apr 2013, 17:18

i have a 1999 s80 t6 and my fan only turns on when the car is turn off, i change the cooling temperature sensor, termostat, and the radiator fan ,temperature sensor reaches half way and the fan won't turn on. what else could it be so the fan would turn on and it wont overheat.
these are the codes that im getting
p0102 mass air flow sensor low frecuency
p0118 ect sensor circuit high voltage

Japedo · Post by **Japedo** » 30 Apr 2013, 19:00

Does your temperature gage behave normally?
Does the engine overheat?

jav24 · Post by **jav24** » 30 Apr 2013, 20:40

the temperature gauge does not behaves normally sometimes it stays all the way to the bottom and sometimes it works and i just change the temperature sensor and is doing the same thing and the engine does not overheats because i dont see the reservoir boil

jav24 · Post by **jav24** » 07 May 2013, 10:24

Do you guys think it needs a software upgrade?