Rad fan question

[Maris Lels]

Hi folks, just discovered, that rad fan not kicks in, when connected directly to battery, fan is working, checked fuse beside battery , fuse looks fine, ... so what next, what turns on radiator fan ?

Gouge on dash working properly.

thanks

 

[pollyp]

faulty ecu coolant sensor? (the other larger 2-pin sensor)

 

[Skinner_87]

Hi folks, just discovered, that rad fan not kicks in, when connected directly to battery, fan is working, checked fuse beside battery , fuse looks fine, ... so what next, what turns on radiator fan ?

Gouge on dash working properly.

thanks

Bust thermostat maybe? take it out & drop it in some boiling water to see if it opens?

 

[pollyp]

^ or closes when cold

 

[Maris Lels]

Bust thermostat maybe? take it out & drop it in some boiling water to see if it opens?

Done it in first, it works fine, opens in hot, and closes in cold water., discovered blocked heating matrix, so i connect pipes dirrectly, skip heating matrix. radiator getting water now, but fan not kicks in when temp rises to red..... will try get new ecu coolant sensor.

does somebody know where in internet buy these sensors ??? or cheaper get them in local motorfactors?

 

[frank]

best to test the sensor first

 

[Maris Lels]

best to test the sensor first

]

Frank, you are the best, thnks

 

[Maris Lels]

Checked that sensor, sensor works perfect, so what else have to look, to make that fan working, when engine is hot ?

 

[superls]

i thought the fan turn on sensor was in the rad like on the k10??

 

[frank]

the ecu controls the radfan, via the relay (pinout#9)

 

[r-reg-sr]

quick check is to short circuit the 2 wire sensor while cars running,if fan kicks him sensors doink'd up
thermostat stuck open ?(even if it opens closes it may be doing it at the incorrect temps) ,,,,,,,,,,,,,this is the r-reg with loads of guesses involved :grinning:

 

[baguete]

Check the relay on the relay box near the battery. You can swap the ENG CONT and RAD FAN relays, if engine refuses to start, its the relay...

 

[Maris Lels]

quick check is to short circuit the 2 wire sensor while cars running,if fan kicks him sensors doink'd up
thermostat stuck open ?(even if it opens closes it may be doing it at the incorrect temps) ,,,,,,,,,,,,,this is the r-reg with loads of guesses involved :grinning:

droped thermostat in to boiled water, it opens, i had used spare one, doing same ... will try short the 2 wire sensor, .... just wondering, what to do, if fan not kicks in when shorten those two wires. ?

 

[r-reg-sr]

do what baguete says first
thermo's have certain temps when start to open, then fully open