Thermo Fans

[psychotic46]

Hello, my stock VP has a Stock thermo fan that is not working, i have tried a hard wire and they DO power up and work, ive changed relays also no go, they wont come on when it reaches temp? Any one no if u get like a temp switch fault( if there is one )

[nghie]

Hello, my stock VP has a Stock thermo fan that is not working, i have tried a hard wire and they DO power up and work, ive changed relays also no go, they wont come on when it reaches temp? Any one no if u get like a temp switch fault( if there is one )

Silly to make a new thread about this particular problem; as I posted up this exact problem not long ago.

Nonetheless; my symptoms are identical to yours. Lets rub our noggins together and solve this problem!

(Me thinks the culprit in my situation is the ECU. It was working fine before Mechanic X changed it.)

Good luck OP! I hope you find a solution that works.

[ryan21]

i know the thermo fan comes on when you check for errors so see if it comes on then?

[PRAVX II S]

Check coolant temp sensor
Check for power & earth at the cooling fan relay socket.
There should be a signal from the ECM telling it to turn on when the temp gets to a certain level.
If this signal is missing then its the ecu. Check the coolant temp sensor first if this is faulty the fan wont turn on

[calais_cruzin]

Im goin with ECU, got a mate with another VN/P to try his.

I got a wreckers special ECU, wouldnt turn on the fan one hit the temp, turn car off n on n she worked.

Went n got a refurb from Reppinco

[304runner]

Ecu..........

[psychotic46]

Silly to make a new thread about this particular problem; as I posted up this exact problem not long ago.

Nonetheless; my symptoms are identical to yours. Lets rub our noggins together and solve this problem!

(Me thinks the culprit in my situation is the ECU. It was working fine before Mechanic X changed it.)

Good luck OP! I hope you find a solution that works.

Oh i didnt realise sorry guys, im still new at search ill get it and stop anoying use soon lol, ok so i will try the ECU soon do i need a matched ECU or can it be calais,berlina ect i have just a boring as commy'dore! Also is the Idle speed control related coz now thats maken me stall all the time at the lights FML!!! if not ill just buy a new one

[nghie]

Oh i didnt realise sorry guys, im still new at search ill get it and stop anoying use soon lol, ok so i will try the ECU soon do i need a matched ECU or can it be calais,berlina ect i have just a boring as commy'dore! Also is the Idle speed control related coz now thats maken me stall all the time at the lights FML!!! if not ill just buy a new one

If i'm not mistaken, I believe all of the VP v6's have the same ECU. The badging i.e. Berlina, Executive are just different "creature comfort" and exterior styling packs.

Correct me, if I'm incorrect!

[PRAVX II S]

I would check the coolant temp sensor before replacing the ECU. all you need is a mult-meter that can reads ohms.
Check it against some specs.
Then if coolant temp sensor checks out then move to the ecu.

[nghie]

coolant temp would be a some place for op to start, but in my case, it was working one minute, car died due to crank sensor failure, ecu Had to be replaced because mechanic x shorted it out somehow and now there is no power running through the fuse box fan terminal.

[Cheap6]

There's a lot of info. useful to diagnosing cooling fan operation in the "How To" on switching VN-VP (and others) cooling fan manually by immortality, including temp. sensor specs.

[psychotic46]

ok sweet as ill have a look