Hey guys... I love my L but unfortunately I haven't had the time to really get under the hood yet and learn all the idiosyncrasies so I need some help... while my truck is idling the RPM's will dip down and the truck will start to shake a bit then immediately go back up.. almost as if letting out the clutch too early on a stick... as I said I am a novice so any help would be greatly appreciated...
need some diagnostic help
- Thread starter chew74
- Start date
sounds like a vacuum leak or sticking idle air control valve (iac for short), check all vacuum lines make sure none are disconected or cracked, listen for hissing noise while truck is running under hood.
thanks for the help! turns out thats what it was. That's why I love this forum!
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