Touareg: 2004 V6
Join Date: Apr 2013
Second Vehicle: Other
Thanked 4 Times in 3 Posts
04 V6 Mysterious Voltage Drop at Idle
I would appreciate any help on the following failure. It is most obvious at night with the headlights on after I have been driving and pull up to a stop / idle.
-Voltage Drop 0.5-1V and RPM drop, then recovers to 14V; AND
- Lights dimming; AND
- Strange noise coming from Kombi valve / Throttle Body Controller area with vibration along the stainless steel secondary air tube.
I have read about the cable from the alternator to the +'ve Busbar and so I cleaned all the Busbar terminals, etc.
I am thinking it could be alternator problem and/or EGR/combi valve and/or Throttle Body.