Radiator far stays on

[SuluR]

Hey guys

I had problems with my car last week but it seems okay now however the fan stays on all the time. Even when cold :S ideas?

Thanks

 

[frank]

same cause maybe ? http://www.micra.org.uk/threads/help-rough-running-after-engine-swap.55556/#post-579693

 

[SuluR]

same cause maybe ? http://www.micra.org.uk/threads/help-rough-running-after-engine-swap.55556/#post-579693

Good suggestion frank but I don't have check engine light and I have temperature readout.

Swapped over relays too, no luck.

 

[frank]

Good suggestion frank but I don't have check engine light and I have temperature readout.

Swapped over relays too, no luck.

nah, the coolant temp sensor (not the gauge one ), the service manual pdf has some info on it

 

[SuluR]

nah, the coolant temp sensor (not the gauge one ), the service manual pdf has some info on it

Took it out to check it and was a bit crusty. Cleaned and went to put back CRACK. So I'm stuffed.

 

[frank]

Took it out to check it and was a bit crusty. Cleaned and went to put back CRACK. So I'm stuffed.

the 2 wire one ?

 

[SuluR]

the 2 wire one ?

That's the one frank. Car doesn't turn on without it.

 

[frank]

That's the one frank. Car doesn't turn on without it.

you mean it wont start/fire up without it ? and is the plastic body broke or the thread ?

 

[SuluR]

you mean it wont start/fire up without it ? and is the plastic body broke or the thread ?

It's the plastic body and connectors that snapped. I have to get another.

Yep for me without that connector connected to the sensor, car won't start.

 

[Jimbo4040]

I used another sensor to check mine (turns out it just wasn't plugged in properly) and i hot swapped them with no running issues, don't think i tried starting it with it unplugged though

 

[SuluR]

Does anyone have a spare one I can replace mine with?

 

[frank]

it,ll flood a hot engine if its disconnected eh, i have 2 wired into mine (to shorten the coldstart enrichment time)

 

[SuluR]

it,ll flood a hot engine if its disconnected eh, i have 2 wired into mine (to shorten the coldstart enrichment time)

The one i have now is unuseable and without the car wont start so im pretty much stuffed until i get another unless theres a way around it?

 

[frank]

The one i have now is unuseable and without the car wont start so im pretty much stuffed until i get another unless theres a way around it?

it should start from cold ok, and you would need a resistor of about 300 ohms to bypass it

 

[SuluR]

it should start from cold ok, and you would need a resistor of about 300 ohms to bypass it

Good point, i was trying it when it had been running a bit before hand. Havent tried it while cold because of crap weather. Will have to pop down to breakers tomorrow again.

 

[SuluR]

So I swapped over the sensor and the fan is still staying on. Any ideas?

 

[frank]

So I swapped over the sensor and the fan is still staying on. Any ideas?

did you check the service manual diagnostic section ?

 

[SuluR]

did you check the service manual diagnostic section ?

Is that to check the sensor? If so today I swapped over two different ones and no change. Changed TB too for the sake of it and no change, fuses relays the lot

 

[frank]

it explains what symptoms will cause the ecu to constantly run the fan (and limp modes etc)

 

[SuluR]

it explains what symptoms will cause the ecu to constantly run the fan (and limp modes etc)

Are you talking about the Haynes manual frank?

Ive flicked through it a dozen times, can you direct me to which page?

I only see the part about checking the sensor in hot water

 

[frank]

the pdf download workshop manual mate (linked on here last week)

 

[SuluR]

the pdf download workshop manual mate (linked on here last week)

Ahhhh!

Shall have a look now.

 

[SuluR]

the pdf download workshop manual mate (linked on here last week)

Right according to the wire diagram in the workshop pdf, theres a hi-lo temperature switch, do you have any idea where that is located?

 

[frank]

Right according to the wire diagram in the workshop pdf, theres a hi-lo temperature switch, do you have any idea where that is located?

fraid not

 

[SuluR]

fraid not

Thanks for your help frank, couldnt have got this far eh

 

[SuluR]

did you check the service manual diagnostic section ?

Which part of the manual is the diagnostic section?

 

[frank]

fuel and emissions control iirc mate (system description)

 

[SuluR]

Wonderful. Car won't even start now. Just my effing luck