HELP NEEDED no2!!!!!

jamieclayton9 · Unread post by **jamieclayton9** » 06 Jun 2007, 09:08

Hi all. when i am driving my xsara 1.9td 1998 every now and then i get the stop light on the dash come up and the light on the tempruture guage. i assume that its to say the car is over heating but it is not. it can even come on just after i start the car. any idea what it could be. many thanks. jamie

citronut · Unread post by **citronut** » 06 Jun 2007, 09:20

sounds like a dicky sensor,try a new one
regards malcolm

JohnD · Unread post by **JohnD** » 06 Jun 2007, 09:21

jamieclayton9 wrote: any idea what it could be. jamie

No! ------------------ But when you find out, let me know. My daughter's Xsara does the same thing. Presumably it's a dodgy connector some where.

Unread post by **CitroJim** » 06 Jun 2007, 09:30

The overtemperature light is usually on its own sensor on the thermostat housing. It'll most likely be dodgy connections. I cannot recall off hand what sensor it is but it'll be one with just one connection even though it will have a two pin plug on it.

The lamp needs an earth to light so the problem may be a bit of dirt and corrosion has got in (a bit of coolant maybe?) to the sensor connector.

Clogzz · Unread post by **Clogzz** » 06 Jun 2007, 14:33

As per Jim’s … the brown temperature sensor operates the cooling fans and bad contacts cause stop and overheat indications.
It also causes the fans to come on for no reason.

KevMayer · Unread post by **KevMayer** » 07 Jun 2007, 19:03

You get the same lights on a 1.9 td Xantia. In that case it's caused by the Bitron unit which controls the cooling fans etc.

The Bitron is supplied by a brown coloured temperature sensor which is mounted on the fuel filter base.

Now, I don't know if your Xsara has a Bitron unit but if it does, the problem is usually a build up of oxidation on the brown electrical connector on the temp sensor. Just pull it off and push it back on a few times and it will probably cure the problem.

good luck,

Kev

Clogzz · Unread post by **Clogzz** » 08 Jun 2007, 12:46

In addition to that, the Bitron pins are tinned with solder, and in time the contacts become dodgy, most obviously pins 7 & 14 that have the resistive brown sensor input.
I had this problem, and cured it by scraping the Bitron pins with the rough end of a piece of broken metals hacksaw blade.
A previous squirt of WD40 on the Bitron pins was good for only a few days.
Citroën in France made free out-of-warranty brown-sensing modifications back then.
It wasn’t a recall, or correction, or modification ... it was an evolution:

http://xu10j4r.free.fr/xantia/notexantia.pdf

jamieclayton9 · Unread post by **jamieclayton9** » 09 Jun 2007, 18:01

All sorted. just took off the conectors of the thermostat hosing and gave them a good clean. is all a ok now. many thanks. jamie

jamieclayton9 · Unread post by **jamieclayton9** » 09 Jun 2007, 18:01

All sorted. just took off the conectors of the thermostat hosing and gave them a good clean. is all a ok now. many thanks. jamie

French Car Forum

HELP NEEDED no2!!!!!

HELP NEEDED no2!!!!!

Re: HELP NEEDED no2!!!!!