1999 citroen xsara engine stop light on cooling fan on all timeplenty of coolant not overheating

SOURCE: Radiator Fan's Run All The Time

There are 2 things that will cause this to happen. 1. The thermostat needs to be replaced and, 2. The coolant sensor can be bad. When I had this problem, I changed them both at the same time, she been just fine since then. Also, I had the check engine light on, and got the code from AutoZone (it's free!)

SOURCE: 1999 jeep grand cherokee laredo 4.0 litre

OK here we go you will need a test light for the following tests, i will try to be as descriptive as possible so lets get started

fist start the engine and turn on the a/c that should command the fan on.
right front engine compartment next to the battery is the power distribution center pop off the top, ground your test light to the negative battery terminal and find fuse number 10 it is a 40 amp fuse check both sides of this fuse with your test light, if you have power on both sides of the fuse than we shall go further.

unplug the connector from the cooling fan, there should be two wires in the plug one is dark green and the other is black with a pink tracer, with your test lite grounded to the negative battery terminal check the dark green wire for power, if there is power there than move your test light ground clamp to the battery positive terminal and test the black wire for ground,
if testing the black wire made the test light shine than the ground circuit is good, if it did not than check you ground connection behind the right headlight.
when testing the dark green wire, if the dark green wire made the test light shine and the ground circuit is good than you simply have a bad coolant fan motor.

I suspect you were not getting power to the fan motor so you will need to take a look at the radiator fan relay, this is a special solid state relay mounted to the inside of radiator core support on the right side down behind the bumper.

here you will find a single plug with 4 wires in it

black = ground
dark blue / pink = relay controll from pcm
dark green = output to radiator cooling fan
gray = battery power from fuse # 10 in pdc

unplug the relay ground your test light to the battery negative terminal, with the engine running and a/c turned on check the gray wire the test light, it should turn on if not recheck fuses.

move your test light to the battery posistive terminal and test the dark blue / pink wire, if the test light turns on than you have a bad radiator fan relay, you can pick one up at your local parts store for about $85.00 just make sure you get a high quality one the cheap ones have a hard time with the amprege consumption of that fan.

good luck

wesley [email protected]

SOURCE: 2003 vw jetta tdi 1.9lt, temp light flashes on cold days

Hi it sounds like you have a temp sender playing up I think there are 3 on your engine,

SOURCE: Hello! I have some problem with my Citroen XM

Hi, XMs were notorious for electrical problems. From what you describe I'm assuming that the engine is not actually overheating. There is an earthing point near the drivers side suspension strut (under the bonnet) which caused many problems.
There are a lot of wires connected to this point and what I used to do was remove the original fitting and connect all the wiring directly to the body using eyelet terminals and the original mounting bolt, making sure you have a good contact with the body by cleaning any corrosion or paint around the contact area.
I did, on another occasion, have a problem with the under-bonnet fusebox causing the oil / stop / temp lights to come on without any reason and it turned out to be a short circuit due to bad assembly at manufacture.
Have you had a diagnosis by a garage with Citroen equipment? It might be worth it now after all the work you've done with no result.Should only be a 1/2 hour charge.
Hope you find a solution. The XM was a car ahead of it's time.

SOURCE: overheating saxo

i would also check for air locks in cooling system, there is a bleed in the top right corner of the engine bay looks like a dust cap off a tyre valve, there is also one on the stat housing on the left hand side of the head and possably one on the top of the radiator