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Discussion Starter #1
Sorry to keep asking for help but this has me worried.

Gas mileage has never been great on this car but lately it's been using more gas than usual. I took a look at my fuel trims and my long term for both banks is at 10.2% after a 200 mile road trip with cruise control. My city LTFT is at 8.6% and 7.4%. Are these numbers too high?

I've also noticed that my LTFT take a long time to update. After around 10 minutes they finally change. I took a look at my dad's truck and his updates almost immediately.
 

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Discussion Starter #3
It's impossible to say because you didn't post the STFT figures that go along with these LT values.
The STFT for both banks and that trip ranged from -5.3% to 5%. Occasionally it would go up to 10% randomly without accelerating and sometimes go up to 20% accelerating hard.
 

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Numbers aren't bad till they are constantly above 10. Could be just dirty injectors or maybe a leaky intake tube/cracked.
 
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