running rich diag - Saab 9000 Bulletin Board - Saabnet.com
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running rich diag
Posted by Senor Don (more from Senor Don) on Wed, 3 Mar 2010 18:45:33
In Reply to: Still running rich., SISteve
[Profile/Gallery]
, Wed, 3 Mar 2010 16:55:41
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SISteve,
Try the following suggestions to diagnose the "Still running rich" concern:
1. With the engine at operating temperature, confirm O2 sensor voltage using a DVOM (digital volt ohm meter).
O2 voltage varies from 0.0 - 1.0vdc.
O2 voltage above 0.5vdc is rich; below 0.5vdc is lean.
2. Connect a vacuum gauge to the intake manifold. Compare its readings to:
http://autospeed.com/cms/title_Using-a-Vacuum-Gauge-for-Engine-Diagnostics/A_2393/article.html
3. Here is the procedure to diagnose your ECU for stored codes:
http://townsendimports.com/Web/engine_folder/24codes.htm
Happy Trails!
posted by 67.34.14...
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