agp423

I got my car back today after it being three weeks at a shop for some paint work (no accident). When I drove home the car was fine. I wanted to take the car out five hours after getting home, after I turned on the car, the radiator fan was on max even though all temperatures were cool/normal. Any idea why this may be?

Southways

There is a (hidden) diode in the engine loom that (rarely) fails. I have only seen it once, but took weeks to track down.

agp423

Would you have a photo of where it is?

agp423

Got the following fault codes on the car

2070 - outside temperature sensor has a short circuit to ground
2237 - coolant temperature sensor 1 has a malfunction

The issue stopped, the shop guys just said it was a loose sensor and it's now fixed. Anyone know where these sensors are so I can check?

jptaylor

it was the coolant temp sensor being unplugged or not seated fully....I posted my same issue with it after I did headboltsheadbolts....when it gets no temp signal it defaults to hi speed fan to ensure adequate cooling

agp423

Where is this sensor exactly? How can I check?

blackbenzz

Usually near the thermostat

jptaylor

It is underneath the thermostat housing in the dead center of the front of the engine...the temp guage will still work fine, it is the temp sensor for the fan signal sense.....remove the front manifold beauty cover and you can get to it...now it IS hidden and not easy to see but you CAN get your hand in to it

Todd Webb

gonna hijack this thread. My radiator fan WON'T turn on at all unless its commanded to by the laptop MB of Tucson has plugged into it, they've had my car 3 weeks now and can't find the issue. Replaced ECU, fan, all the sensors and reprogrammed the car.. help please, I'd love to tell MB how to fix my car.

roadtalontsi

Lol. Did they try a front sam? Thats about the only part left other than wiring. lol. Got to love that good ol' diagnostic shot gun approach

Todd Webb

Yup, already replaced that. The weird part is everything works when commanded to by the diagnostic computer but won't work at all without! Does that mean all the switches and sensors work or are they somehow being bypassed? Literally it seems like they won't be able to fix my car.

~T