Hi All,

I just retrieved the code (P0505) "Idle control system malfunction" and wondering where I should start... ICV maybe. Not sure if this model has one, but I'll check under the hood. The symptoms are as follows:

After starting, all instrument cluster lights go ON then OFF as normal, rev 'bout 600RPM...

When car's been running and operating temp is reached, the car seems to want to raise it's RPM while at STOP sign.

Once I get home and place the car in 'P', the RPM raises to 1200 and just stays there...

The C.E.L. came on a few days ago and all symptoms appears. I have since extinguised C.E.L. with scanner...

Please advise where I should start and what the most likely cause is...

Thanks,

__________________
sjsfiji

'87 W124 260E (DD)
98K orig. mi. @7/15
CLK 7-Spoke Forged Wheels
Neuspeed springs/Bilstein Sport
4/3 bump (F/R)

'97 993 Carrera
106K orig. mi.
Always driven like it's stolen