Hdi Fan switch

[procta]

where is this located? as I want to test to see if the system is running, as I haven't really heard the fans kick in on this at all. also what temp should they kick in?

[cully]

the ecu controls the fans on the hdi
you can check the fans using peugeot planet

[procta]

is there no sensor I can just unplug? like I can do with my rover metro.

[cully]

the CTS sensor is below the thermostat above the gearbox in the side of the head its a bitch to get too
unplug it it may bring on an engine managment light
the sensor has 3 wires(two sensors) one controls the ECU fueling and the second side is the temp gauge on the dash

[Toms306]

Yeah, you can unplug the coolant temp sensor (blue one) and the fans should come on as a fail safe. Be careful though, the plastic housing on the later cars becomes brittle so don't just yank at it lol. Or link two wires in the AC pressure switch plug and use the AC button to switch the fans on.

[Poodle]

IIrc it's 93 for low speed and 98 for high speed.

[306clot]

hi, As said there is not a normal 12v fan switch its ecu controlled, but however you can install your own fan switch like I am ding shortly so i can have more controls over temperatures and a bit more of piece of mind as I also going to slimline fans.

iirc the standard temperature for the fans to kick in at is 96 degrees for low speed and something like 100 for high speed witch in my opinion is way to high and damage could already be caused by the time it reaches that.

jake

[welshpug]

96 degrees for low speed and something like 100 for high speed witch in my opinion is way to high and damage could already be caused by the time it reaches that.

bollocks.

its a pressurised cooling system, 1.4 bar peak release pressure, boiling point at that pressure of plain water is 128 degrees, proper coolant will be a little higher again.

[cully]

96 degrees for low speed and something like 100 for high speed witch in my opinion is way to high and damage could already be caused by the time it reaches that.

bollocks.

its a pressurised cooling system, 1.4 bar peak release pressure, boiling point at that pressure of plain water is 128 degrees, proper coolant will be a little higher again.

first of all LMAO...... at welshpugs first comment, but yes  he is spot on about the boiling points raising when coolent is under pressure

[welshpug]

SCIENCE BITCH!

[306clot]

96 degrees for low speed and something like 100 for high speed witch in my opinion is way to high and damage could already be caused by the time it reaches that.

bollocks.

its a pressurised cooling system, 1.4 bar peak release pressure, boiling point at that pressure of plain water is 128 degrees, proper coolant will be a little higher again.

just seen poodles post before mine witch is plausible as I have struggled to find figures myself       , 


I said nothing about the water boiling I  was just simply talking about the block and head being at over 100 degs which I think is very hot for a engine and wouldn't want to run one at that temperature ever on 14+ year old aluminium head and gasket!

[Poodle]

Don't run an oil temperature gauge then, you'll get upset.

[306clot]

.....

[Poodle]

Not being funny dude, but it's an internal combustion engine, you know what that means, right..?

[welshpug]

in terms of efficiency mid to high 80's Is the right range, hence the fans switching just above that.

anyway, thats nothing to do with how to test hdi fans

[306clot]

Not being funny dude, but it's an internal combustion engine, you know what that means, right..?

ha ha yeah all I was meaning is that to me anything much above 90 is hot considering the normal operating temperature of a HDI, its just my opinion, i'm not saying they cant handle it I just personally wouldn't personally like my engine running at nearly 100 degs thats all not offence intended to you poodle, but either way this is getting off topic

Jake 

[Poodle]

Lol none taken, you're entitled to your opinion. Please excuse my constant piss-taking, it's a poor attempt at being funny.