Hi Charly....
Carsten war schneller bzgl-des DTC's.
Leider kann ich als "Honk" nur Input beisteuern. :aufgeben:
P0505 - Loss of idle speed control
Loss of idle speed control will result if the idle RPM is +-200 from preset idle speed and IAC motor is at zero or maximum for greater than 5 seconds.
- Loss of idle speed control is not an indicator that the IAC is bad. Other causes are intake leaks, misfiring cylinder.
- Leaking injectors could cause poor idle. To check for leaky injectors remove A/C, turn throttle wide open, turn key to ON for 2 seconds and then off for 2 seconds five consecutive times. Replace injectors if there is any evidence of raw fuel in the bores.
- Vacuum leaks
- Contaminated fuel
- Excessive Oil in crankcase
- TP sensor reading greater than 1 % (cable misadjusted), battery less then 9 Volts, or vehicle speed sensor (VSS) greater than 0 will disable idle speed control.
- Loss of battery power to terminal 31 of ECM.
This should give you a lot of things to look for. Also if the ECM loses power, the ECM will assume that the vehicle is stopped and adjust the idle air control to bring the idle up and set a code too.
It could be as simple as an air leak around the intake. Try using the WD40 trick to see if you are leaking air first....the most basic test, and work your way from there, to checking all the harness connections. Check all the other things on the list it may be if those dont come up with something. MAKE SURE YOUR BATTERY IS GOOD...less tha 9vdc will disable the idle speed control
Mit diesem Fehlercode klagen die meisten eigentlich über unregelmäßige,hohe Leerlaufdrehzahl.
Was das jetzt aber mit deinem Problem zu tun hat....da muss ich dann passen...sorry.
Ausser....In letzter Zeit mal was am Mapping verändert ????
Weiter ein gutes Händchen für Diagnose und Rep.
dokter