1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Po446

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Old 03-10-2013, 07:55 PM
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Hi All:

My '98 SE with 171k is running fine, no issues with acceleration or power. Check engine light is on and scan returned PO446. I think there is a mild raw fuel smell at start up and wonder if you could send me in the right direction for repair.

Thanks,

-Jay
Old 03-10-2013, 08:26 PM
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In our Troubleshooting section, for P0446...

https://www.gmforum.com/obd-ii-troub.../p0446-284202/
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Old 03-11-2013, 08:07 AM
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check the vacuum lines first. there is a boot on the throttle body that one side goes to the purge valve and the other the fpr. that being cracked is a common issue. also the metal ones that go to the canister are bad at the transition to and from rubber




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