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Re: Excessive Fuel Trim (Extreme Negative Values)
Posted to Technical Theory Forum on 11/7/2025 3 Replies

Hello Kyle,

Couple thoughts.

Check your hi-press fuel pump for dumping fuel into the oil.

I'm not sure you've conquered the P1101. Your MAF readings are high for the engine size at idle, so fuel is being delivered to the injectors based on MAF. But there ... Login to read more.

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