Subject	Running very rich following initial warm-up
Posted by	rhombicblue on November 15, 2023 at 7:21 PM
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Message	Can anyone tell me which engine sensors (Coolant Temp, Fuel Temp, MAFs, TPS, O2 sensors, etc.) could cause my engine to run very rich (AFRs ~ 10 - 12.5) after warming up from a cold start? When started, the AFRs are in the 14 - 15 range at around 1700 RPM. As the RPMs begin to fall below 1200 the AFRs begin to go in the 12.5 to 10 range. This rich AFRs continue all the way down to ~ 850 RPM when the engine is fully up to temperature. Thanks in advance for your input(s)!
Follow Ups	Running very rich following initial warm-up - rhombicblue 19:21:18 11/15/23 Re: Running very rich following initial warm-up - Cjw3 19:18:58 11/18/23 Re: Re: Running very rich following initial warm-up - rhombicblue 11:59:22 11/19/23 Thinking out loud here - Cjw3 20:38:59 11/19/23
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