Hi all, just a quick question.
With the ignition in "on" position (engine off) the Idle Reg valve makes a buzzing sound - is this normal?
The car has quite a lumpy idle, and I can find/see no obvious vacuum breaches.
I unplugged the connector and wiring to it and immediately, as you would imagine, stopped buzzing.
Buzzing Idle Regulator Valve
Moderators: GRNSHRK, ron, bfons
Buzzing Idle Regulator Valve
Current cars:
1989 635CSi Manual
2007 Z4M Coupe
G31 530d M Sport
F21 118i M Sport
Based in the U.K. Leicestershire
Previously : F30, E60, E21, E30, E12, E28
1989 635CSi Manual
2007 Z4M Coupe
G31 530d M Sport
F21 118i M Sport
Based in the U.K. Leicestershire
Previously : F30, E60, E21, E30, E12, E28
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Re: Buzzing Idle Regulator Valve
How much, if at all, did unplugging the IAC (Idle Air Control) valve affect the idle? And, yes, they sometime hum (don't know the words? ). Some more than others. If it's really loud it's probably on it's last legs.
Ken Kanne
'84 633CSi "Sylvia"; '85 635CSi "Katja";'85 325e "Hazel Ann"; '95 M3 "Ashlyn"
'84 633CSi "Sylvia"; '85 635CSi "Katja";'85 325e "Hazel Ann"; '95 M3 "Ashlyn"