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Volvo S60 2002 2.4L Rough idle and drive


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NathanxChristie
New User

Sep 11, 2018, 11:50 PM

Post #1 of 2 (290 views)
Volvo S60 2002 2.4L Rough idle and drive Sign In

My 2002 Volvo S60 2.4L non turbo is having trouble with a high revving idle and often stalling after start. During driving the car will shake and seem to cough. After buying the scanning tool, error codes and message; P2177 OBD-II Trouble Code: System Too Lean Off Idle Bank 1. I have previously replaced all spark plugs and cylinders. Also after watching some videos i decided to clean out the throttle body and straight after the rough idling and poor drive began. I bought and installed a new throttle body which has since made it a little better but still coughs and idles rough. Any ideas on what this could be or what i've done wrong would be huge! thank you Cool


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 12, 2018, 5:37 AM

Post #2 of 2 (277 views)
Re: Volvo S60 2002 2.4L Rough idle and drive Sign In

My guess is you either damaged or left off a vacuum connection when you were messing with the throttle body. The symptoms indicate a vacuum/air leak.



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