1997 model
The
following are the general instructions on the start of diagnosing any
electronically controlled engine or transmission problem. The
engine and the automatic transmission (transmission control is only
for automatics, engine is still computer controlled no matter the
transmission type) in this vehicle are computer controlled and in
most cases when a fault occurs a fault code is stored in the memory
of the computer control module. There are exception to this, such as
the Mass Airflow Meter and fuel pressure problems. What must be done
is to have all the basic testing done such as a scan of the system
for fault codes as well as a check with a live data scanner tool for
engine functions that are not within range of normal, a trained
technician is required to know what is correct and what isn't, then
based on careful diagnostics done from a factory repair manual the
correct part is replaced or the wiring repaired or the computer
replaced (known as the PCM or ECM,ECU), which is very rarely the
problem. Other basic checks must be done as well such as mechanical
problems with the engine as well as engine state of tune and mileage
on the engine. The transmission can have mechanical issues as well
such as no gear engagement at all or a failed pump or other pressure
related problems. Also engine mechanical problems can and do cause
many drive-ability related problem such as rough idle and other
symptoms.
SOURCE: how to increase idle speed on peugeot 405 sti
carb? mono point injection or multi point injection.check for a thin rubber air hose that runs to ign module is it intact or sucking in air caused by being perished also the thin pipe running to the air intake cold /hot ,flap control .if carb then it has a adjusting screw ,and mono point but multipoint is different.91 model also uses a distributor which could be advanced a slightly ,check the same sort of air pipe to the gearbox as iam sure this year has a pipe to operate the gearchange.any of these pipes sucking air can cause your problem
SOURCE: Peugeot 405 1993 diesel estate
the alarm control unit is fitted under the drivers seat can be accessed from the rear foot well by putting seat fully forward .unscrew the two nuts holding the cover the relays are inside the unit.
this unit interfaces will tell the fuel stop solenoid to release (by applying 12 volts)
the fuel stop solinoid is on the main diesel pump under the bonnet - the exac location on the pump will depend on the make - but it should be cylindrical and have one wire connected to it - (i dont think peugeot were using multi wired coded soleniods in 93)
obivously if your car has the keypad immobilser you will know where this is - if it is the remote alarm immobilser the reciever is in the over head consol near the interior front light
SOURCE: will sometimes stall at stops, feels like its
First of all you need to access the Engine Control Module (ECM) using suitable diagnostic equipment connected to the data link connector of the car, in order to pull out all DTC's memored. DTC = Diagnostic Trouble Code. Then you will bu full informed about the root cause of the problem, and you will be able to repair & replace bad pieces and reset the ECM.
Let me know please about found DTC's. I will assist you kindly to fix the problem.
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