pug 406 aircon prob

car is a 98 1.9 td lx, compressor clicks when ac activated, but fan at
front no longer kicks in,do these fans give grief or is there a relay or
something else that goes faulty? other fan for engine cooling works fine,
any help appreciated, Stephen.

 

If you remove the litle grille between the headlights ( the 4 plastic
snap in you have to renew!! ) behind it there is a box with 3 relays
in it.

the lower one is probably faulty, maybe corroded, ore just dirty

clean and replace as nececarry ( a multi meter does help you in these)
be careful with the wire loom there

test for function

if ok

spray a good sealant over it! ( like the D2 stuff )

replace cap

remount grille



was the stop indicator light blinking? if yes it is probably the mass
wire to the relay

if not it might be the relay itself

good luck!

 

not seen stop light lit other than starting car,have voltage to pins 1 and
4 in the lower relay you mention, and when ac activated that lower relay
clicks,but not a peep from the top right relay,..i have tried relays from
a m8s car which are working,can get a fan for £20 from breakers,might be
worth a try,...before i melt in this heat....thanx for reply, Stephen.

 

not seen stop light lit other than starting car,have voltage to pins 1 and
4 in the lower relay you mention, and when ac activated that lower relay
clicks,but not a peep from the top right relay,..i have tried relays from
a m8s car which are working,can get a fan for £20 from breakers,might be
worth a try,...before i melt in this heat....thanx for reply, Stephen.

 

the lower relay is for low speed operation the other two are for high
speed... . you can test that by GENTLY unplugging the sensor directly
under the air filter make sure your not sticking any thing in the fan
so zip up first

is there any current going to the right hand side fan at all?
does the relay actually work ore does it just say click?
have you tested the fan by feeding it from another source?

the aircon is only works if the fan is working, it might save you the
pence if you messure it first.

it could wel be the carbon brushes. that can be done as cheap as one
pound. getting one from the breakers for half the price a new one is
sounds PWPF to me, the things that go titty up are the collector and
the brushes, you might end up with a wel used one getting your problem
started all over again next season.

is the airco system still under pressure? running it dry kills it

Good luck

Marc

 

this is getting very odd indeed....took fan of and put 12v to it, it
worked!!!!!! run car with air con on and put my multi meter across the
terminal plug, wallagh 14.1 volts......however...when assembled fan did
not run...mean to say, and yes the plug socket is securely home,..- and +
obviously present at socet and fan working direct from 12v, so what the
feck is wrong...could it be something limiting the ampage to fan....again
at a loss and scratching my head,thanks for replies marc...what you rtekon
about this....Stephen..

 

Try measuring the voltage on either fan connector while it's supposed to be
running.
That should give a clue as to where the high resistance problem is.
If the + wire is low, search back to supply.
If the -Ve wire is high check resistance of the earthy end of fan (to
chassis)

Rick.

 

can you measure the actual amps that go to the fan, ( serealize a
meter in the V+ wire) a voltage itself does not say all that much. so
how is the voltage under the load of the fan, does it drop?

have you bypassed the relay? is it working then?
how about feeding the fans directly from the baterry, and then let te
relay switch it on

it sounds like your having a mass resistance/break problem, so is the
mass from the fan not corroded?
how about taking the mass directly from the battery and then try it?

is there a pug garagist that can read out the diag3000 and does not
charge you next months rent?


Grrz from holland

Marc

 

thats an easier way of putting it, sorry for the clog english

doe they use mass amounts of salt to clear the roads in wintertime in
belfast? this namely caused a very simmilar problem on my 406

 

good news.....had enough tinkering at the bast***, took it to my local air
con guy,(greenaways) of belfast,..fans all ok, it was the gas in the high
pressure,or the lack of it,got it regassed and pressure and leak tested
and all ok, so im now a happy camper with a nice cool interior,can only
but wonder were the gas went if theres no leak, however for the time being
its working,...thanks to all for the advice it is appreciated...till the
next time....Stephen.

 

the aircon system is never hermetically closed of for constructional
reasons ( don't ask me)
is is supposed to loose some of its coolant over time.
an annual check is needed ( i know its not in the manual)

luckaly you can keep your head cool..

grrzz

M.

 

I disagree. It has to be sealed, but what happens is that if it is not
used for an extended period, like during the winter months, the
various seals go hard and that is where the leaks occur.

 

it is factory info so dont ask me why but it is not sealed
hermetically, for whatever reason...
sure not using the aircon causes hardened seals but that is just one
of the aircon gremlins that can occur.