This step describes the 88 505 Turbo (5 speed) mainly
Make sure the "ECO" switch is up. There is a trinary switch located near the
cooling resevoir. Within a few inches of the resevoir there is a four
conductor in-line connector (there are 5 wires going in to the four holes --
two of them are brown, one is red sharing a hole with a brown wire and two are
irrelevent). A jumper needs to be connected across the two brown wires (stick
it in the holes with the wires). A piece of stranded speaker wire worked fine
for me. Turn the ignition on (don't start the car). The electric fan(s) should
come on. Try turning the "inside" of the pulley on the front of the
compressor, it should not move. If it does and the fans are not on, check your
jumper. The AC compressor should clutch, if it doesn't with the jumper, I
can't help you -- seek help on the list or take it to your nearest decent
Peugeot mechanic.
If your compressor clutches and your fan(s) don't come on check your
connections and relays. Shorting across pins 3 and 5 of the fan relay (on the
left, possibly with a cover over it behind driver's side headlight) should
make the fan(s) come on. My experience is only with the manual transmission
model with only one electric fan. I do believe that with the AC the fans
(automatic trans.) run on low (in series -- in parallel for high). If the fans
on the automatic aren't working, check the diodes coming off the relays and
the grounds for the fans. For the manual transmission cars there is a
resistor for the low speed, this is what was wrong with mine. Chances are
that if the fan comes on with shorting across the relay pins (5 speed
transmission) engages the fan, but it does not come on with the AC, it is the
resistor. Checking resistor -- remove driver's side headlight (pull out on
left side then pull to the left, carefully disconnect spring - remember where
it hooked - and power connectors). The resistor is the size of 3 -4 silver
dollars stacked together and has two white wires going into it via quick
disconnect connectors (aka. male/female). Moving the wires should make the fan
turn on (replace connectors if this works), if it doesn't, try and touch them
together, the fan should turn on indicating a bad resistor. Do not use that as
a permanent repair, contact your Peugeot dealer and order a new resistor
before continuing.
REMOVE TRINARY SWITCH JUMPER!!!
Running compressor with no refrigerant = BAD
End part 2/3