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Lambda Light - where to start troubleshooting? S70

posted by  tina on  Mon Dec 18 19:03 CST 2006
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last visit: Thu Nov 24 09:34 CST 2011
[RELATED]

Uh oh, last night the lamba light came on in the 1998 S70. I can't see anything amiss under the hood - no visible disconnected hoses etc. The car does seem to be running rich, especially when cold. I know the lambda light indicates a fuel mixture problem, but where do I start my diagnosis?

Also the spark plugs were replaced 2 months ago with Volvo plugs from dealer, I also took off the throttle body and everything was clean in there at the time - very clean. I also replaced the air filter and cbin air filter at that time.

Thanks!






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