Fan control
Fan control
Hi guys. Its been almost a week of problem free motoring since I had the glow plugs done and now another fault has raised its ugly head - the fan control has an intermittant fault where it doesn't work sometimes. The control just swivels while controling nothing.
It comes back during normal driving or with a well placed thump to the dashboard. I think its a dodgy fan control as it does work although when it does, it sounds rather weedy sometimes.
Am I right? And having the dashboard apart I can see that it appears easy enough to replace, am I right again? LOL
Your help, as always, will be greatly appreciated.
Calf.
It comes back during normal driving or with a well placed thump to the dashboard. I think its a dodgy fan control as it does work although when it does, it sounds rather weedy sometimes.
Am I right? And having the dashboard apart I can see that it appears easy enough to replace, am I right again? LOL
Your help, as always, will be greatly appreciated.
Calf.
RIP Rene, 1992 - 2006.
He was the best car I ever owned.
He was the best car I ever owned.
They all go like that eventually - can be many reasons - from motor brushes, motor connectors, failed transistors, incorrect circuit board manufacture, and dirty variable speed control or a failed relay.
I sorted mine recently - and when functioning properly you should have variable speeds, with a full speed when the knob is turned fully clockwise. This is marked by a relay above the steering column clicking in and shorting out the transistor control unit.
Many cars have an incorrrect circuit board (mine included) and when I made the mods described by Tom I had full speed for the first time!
I think you'll find it all in this link. Pictures of the circuit board and its mods are on Toms site - follow the link.
http://www.frenchcarforum.co.uk/forum/v ... ght=heater
jeremy
I sorted mine recently - and when functioning properly you should have variable speeds, with a full speed when the knob is turned fully clockwise. This is marked by a relay above the steering column clicking in and shorting out the transistor control unit.
Many cars have an incorrrect circuit board (mine included) and when I made the mods described by Tom I had full speed for the first time!
I think you'll find it all in this link. Pictures of the circuit board and its mods are on Toms site - follow the link.
http://www.frenchcarforum.co.uk/forum/v ... ght=heater
jeremy
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its not a resistor but a transistor, took me ages to find the resistor (its not there) but the haynes managed to show me the light and the dodgy power transistor!
If anyone is replacing the Bitron unit please let me know as i'm keen to get hold of dead ones and see if they can be overhauled, would be good to make a supply of available spares!
If anyone is replacing the Bitron unit please let me know as i'm keen to get hold of dead ones and see if they can be overhauled, would be good to make a supply of available spares!
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Not sure if it applies to the BX, but on the Xantia, it's not the internals of the Bitron that fail, but intermittent contacts on the pins.
The pins are tinned with solder, and they need a good scrape.
I scraped them with the rough end of a broken piece of metals hacksaw blade, and then swept out the scraps of solder, and it's been good since.
I had tried previously to clean them with a little blunt screwdriver, and then squirted them with WD40, but that was only good for 3 days.
The pins are tinned with solder, and they need a good scrape.
I scraped them with the rough end of a broken piece of metals hacksaw blade, and then swept out the scraps of solder, and it's been good since.
I had tried previously to clean them with a little blunt screwdriver, and then squirted them with WD40, but that was only good for 3 days.
2002 C5 2.0i AL4 207,000 km 76372389
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Indeed!tom wrote:Many more Xantiae had aircon than BXs, being inherently less cool.
I know for sure that the 405 and 306 ranges were only fitted with bitron units if they had A/C fitted, lesser models simply having the 3 speed relays (slow speed and high speed) controlled by a dual-temperature radiator switch.
I also seem to remember the same being true of early Xantiae: Bitron for A/C and thermo-mechanical switching for non-A/C.
It would certainly make sense that if you can "get away" without having a Bitron unit, so much the better.
this might be a signature
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Cheers Tom, your earthing bodge has got the blower going, it was flatlining beforetom wrote:Go to the BXPress column on the club homepage. Where it says "Last month", click the link three times and you will find a blow by blow account of repairing and overhauling heater blowers.
Marty said: "Take some small comfort from the fact that the driver of the other car, having failed the breath test will even now be in a little cell, with luck they will double him up with some mean bastard who will be tattooing a fandango on his arse"
'94 XM 2.1TD Break
'99 Xantia 1.9TD Break (almost there)
'63 Renault Caravelle
'94 XM 2.1TD Break
'99 Xantia 1.9TD Break (almost there)
'63 Renault Caravelle