Temp gauge dropping?

[paulm]

My temp gauge has a mind of its own,when running its at about 85 degrees but sometimes it goes down to zero for a while and then comes back up again,any ideas?

Cheers Paul

[grasmere59]

Perhaps an airlock in the cooling system?

[lozz]

:airlock or faulty temp sensor is my guess,

[Harshan]

Has it ever been stuck at one position even after you turn off ignition key?

Is it only temp gauge being weird or other gauges too acts like this seldom ?

There's a remote possibility of its being the BSI and / or connectors on the drivers side close to accelerator.

[paulm]

Everything else seems to be ok,whats BSI stand for? and Harshan where are theses cables i need to look at on the drivers side?

Cheers Paul

[lozz]

RE: B.s.i

have aread of this, autodiagnos.com/fileadmin/assets/en/downloads/pdf/technical_bulletins/psa/bsi_complete.pdf · PDF file
dont know if link works but if you copy and paste it into your browser it shouid do,


does your Temp drop going down hill?

if so id get anew thermostat, iwouidnt go anywhere near the bsi looking for the fault, its a bit of a wasp hive

if the top link dont work try this one http://psa-peugeot.info/206/muxexplained.html

[paulm]

Haven't noticed that it only drops going downhill,i'll check that and thanks for the link lozz i'll have a read of it as soon as i can.I'm trying to work through its faults one by one so there will be more questions yet!! lol

Cheers Paul

[Harshan]

Everything else seems to be ok,whats BSI stand for? and Harshan where are theses cables i need to look at on the drivers side?

Cheers Paul

First and foremost try to bleed the system and check the thermo before going to BSI. That's why I said it's a remote possibility and if other gauges too are acting wired.

BSI stands for built in systems interface, kind of unit which controls quite a lot of functions including gauges.