xantia fans with aircon treg

[jacksun1987]

May fans not working the middle relay corroded I had the car running in idle we got upto 95 degree on non of them kicked in we managed to get the corroded bit out of the Conneter
Do all 3 relays need to ve working for the fan to kick in?

[citroenxm]

In a word, Yes of course. I THINK the centre relay is the feed to the fans...

[jacksun1987]

Hope the connector still works

[jacksun1987]

Got 3 relays in both fans still seem not conning in what's the temperature they come in

[lurchy666]

easy way to tell if your fans are working, stick the air con on and the fans should come on low speed, I have got a picture of how the pug 306 fans ( pretty much the same set up) are wired if I can find it i'll put it up

[lurchy666]

even better I just found the page I pinched the picture off, heres the link

http://www.peugeotlogic.com/workshop/ws ... fanop1.htm" onclick="window.open(this.href);return false;

hope it helps a bit

[RichardW]

Pretty sure the HDi doesn't bother to put the fans on till the temp is >100C - which is a bit concerning the first time it does it! You need a hot day in stationary traffic to get near to the fans coming on - unless the AC is running of course

I only once got the high speed fans on on my Xantia HDi - sat in traffic on a hot day (about the only one in Scotland in the last 6 years!), and AC off as SWMBO was complaining about it. After about an hour at nearly 30 she conceded and we put it on. Engine temp was around 100 - see above on fans temp - and then after about 30s of running the AC the fans went to high. Wow - what a noise, and the whole car was humming! Only lasted a minute or so till AC temperature and pressure came down.

[lurchy666]

also if you have lexia or can get someone with it, theres an option in there to test the fans

[Hell Razor5543]

Well, certainly on the HDi engine, but it is debateable as to if you can on other engines.

[Stewart(oily)]

Removing the brown connector on top of the thermostat housing seemed to work on my S2 Td 1.9

[citroenxm]

Hdi only have one temp sensor.. a blue one that gives all info the the ecu.. the engine main ecu controls the fans on the hdi not individual sensors.. making it a bit more black box rather then out right sensor.

im still hedge my bets on relay connection or an actual break in a wire. Which will be fun.

[Old-Guy]

Of the 3 relays, 2 are of one type, 1 is a different type. Need to know exactly which engine you have to advise on part numbers and which go where. The relay protection box seems to be common across most Xantias, but there is more than 1 harness (with the all-important connectors). At least one harness is NFP (no longer available).

Would be a good idea to put your car details in your signature. If you post the last 8 digits of the VIN number, one of us will be able to look up the exact part numbers for your car, what other models they were fitted to and which relay goes where!

[jacksun1987]

We gt 2 relays off a car in the scrap yard. But loking at the relays they seem the same.
Its a 2liter hdi 110 bhp

[lurchy666]

just because they look the same does't mean they are, compare the part numbers/ pictures on the sides (if they have them) before you put them in,

[jacksun1987]

the last numbers on the vin number are 72280688

We look on the side at the pictures and numbers. They all seemed the same. Even the broken one looked the same. Which was the middle one. Wonder if they was all wrong at the first place. Could it have blown a fuse?
Like i say got the car really high temperature. The stop light was flashing. And the anti freeze was leaking out of the over flow pipe.