1 fan not working

[Mattt]

Car was getting warm today, over 100 degrees water (in Australia) and the passenger side fan wasn't on.

I can't get the software to work to check the diagnostics, so I guess easiest way to check if a sensor/fan problem is to pull the sensor lead to over-ride and force them on.

Where abouts is the sensor I need to pull? I believe it's under the airbox, but do I need to remove it to access it?

[natben]

You can just unplug the wire that is attached to the sensor, it is below the 5th throttle body and you are right the air box needs to come of for access. It is also worth checking the two plugs which feed the fans to see if the connections are corroded, they are down the bottom of the fans between the dry sump tank and the fans. Its worth giving them a clean if they are corroded as this will stop the fan working.


George

[kevin63]

Not too sure here, but if the car has aircon, I thought the second fan only came on when the aircon was in use and the temp was above a certain temp. Like I say, I'm not too sure, but something just to keep in mind before stripping everything and chucking money at it.

[Mattt]

I thought the fans worked off a different sensor to the dash display, and one kicked in at 92ish and the next a bit higher.

The readings between dash sensor and fan controller sensor are different I know.

[clive f]

had this problem myself once, correded connections to the fans, pull the wires and see if they come out.

[shep1001]

Could be the relay. Swap them over and see if the fan that was not working now works and the other is dead?

[Mattt]

Connectors seem fine, will check the relay tomorrow.

[Mattt]

Checked today and both fans were working, so maybe re-seating the connectors worked - there was a lot of grease in the plug, so wiped some away.

Now I have another problem, see other thread!!