sailorbob

It's not the holder that moves to give the bright / dim function but the current path is diverted from pin 8 (dim via a resistor in the switch) to pin 5 (bright) when the switch is pressed in. The lamp is probably a 4.6d size.

I looked on an online Peugeot EPC yesterday and could not see the lamps listed separately under the 106 or 205 models. I haven't got a multimeter here so I cannot work out the wattage of the lamps but with that information and the diameter (3/16") it may be possible to source a replacement.

Had to be brave and pull on it harder, it's a little bit different to yours. I have not attempted to remove the lamp from its holder but it looks like it is just a capless lamp with long leads. Unfortunately there is no identifying markings on the lamp.

How do you remove the lamp? I've looked at the back of a windscreen heater switch and not seen anything obvious. There is a cross shaped protrusion in the middle of the back of the switch that slides in and out about half a millimetre but does not feel like it's going to come out without breaking.

Assuming the brake servo assistance is OK, what are the pads? The pad material can make a big difference to brake feel.

SWLC list the A082N6061F oil pressure gauge as being available.

The pre '95 A082N6061F oil pressure gauge, A082N6067F oil temperature gauge and B082N6060F boost gauge are all listed as having orange illumination but use the A082N6070F green sleeve so maybe the sleeve an option for you.

They didn't used to be very strict on that but I haven't bought from them in a while so I don't know if that is still the case. Do you have one of their trade stores nearby? They might allow cash account purchases.

Wurth make a steel brake pipe with the green polyvinyl fluoride coating.

What are the make and model number of the two gauges with the red backlight lenses?

Regarding the floats, the DHLA 45 D and DHLA 45 M carburettors should have float weights of 8.5 g. When the cover is held vertically with the float hanging downwards the distance between the lower edge of the float and the cover's gasket should be 14.5 - 15 mm.

Is the IAT sensor showing the ambient air temperature when the engine is cold? If it's showing the 36 deg C you referred to then the sensor, wiring or ECU is faulty.

Yes, the 5th gears and corresponding selector shaft and fork are all inside the rear cover. Just spitballing here, could the cross shaft operating finger have been fitted backwards?

I am not sure how easy it is to get into the switch even if it is repairable. Also, some cut off switches use a magnet to hold the ball bearing down, I don't how those fail.

Yes, they can loose spring rate and trigger too easily. I know of one S4 that suffered from this.

The HEGO sensor connector on the loom is a Delphi 12015798 and uses 4 x 12124580 and 4 x 12089679 for the terminals and seals.

Yes, you need to be in mode 0 for Espritmon to connect to the ECU.

The PROM ID shows it's not a stock calibration. If you use Espritmon to dump the EPROM contents and email the binary file to me I can see if I can identify it.

It''s not a standard S4s calibration, it's been modified so that could affect things (these aftermarket chips generally don't have the correct VE tables for an SE or S4). It might explain those BLM values being off. It could be a lambda sensor issue but without seeing how it's responding to the fuelling it's hard to tell.

I think we can say with almost certainty that the Integrator dropping to zero is causing the stall. You have an oddity with the BLM values too as the graph above shows the maximum being almost hit a couple of times and I'm guessing the minimum being hit three times (I say guessing because you aren't running a standard S4 calibration and the 'BLM Min' (aka KBLMMIN) parameter appears to have been altered).

I think you meant to say cell 1 is at 0x0017

Open the datalog file in Excel as a comma separated text file. The BLM is in column W and the BLM cell number is in column X. Divide the column W values by 1.28 to get the BLM value as a percentage.

What are your BLM values when the problem occurs?

The Esprit uses a Zirconia type heated lambda sensor. The heater is used to reduce the warm up time of the sensor. It also allows the sensor to be mounted farther away from high thermal loads such as that created by the turbocharger and keep the sensor hot when it may otherwise cool down during times such as an extended period of idle. The Zirconia type can output a voltage between 0 V and 1.1 V and from some datalogs I have just checked it occasionally does go over 1.0 V.

Yes, that blue line. It is a multiplier of the 'Base Pulsewidth' (aka BPW) and is derived from the lambda sensor input and is used to cause the switching of the A/F ratio about the stoichiometric A/F ratio. I suspect the lambda sensor could be cause of this problem. If the ECU is seeing a rich mixture that does not lean off as the BPW is leaned out it will keep on leaning out until you get the stall if this happens before the ECU decides there's a problem with the sensor. Check the datalog and see if this is indeed what's happening.