Mileage comparison? Miles on the 05 Tahoe compared to 05 Sierra at the time? Answer for octane and brand question?
Intermittent Start And Poor Fuel Economy
- Thread starter Jdavenport0622
- Start date
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afpj
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Looked at fuel trims? Your at the mileage where MAF could be failing, or as someone already alluded to, really dirty.
Jdavenport0622
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Gathered more info on my truck. MAF cleaned and giving good voltage and resistance numbers, map sensor cleaned and giving good voltage and resistance numbers, fuel pressure with key in on position is reading 52 psi and same during and after start. Pressure bleeds down to 13 psi an hour after shutdown. Unable to gather fuel trim info on my own. I took it to a shop a couple of weeks ago and the 2 days it sat there they said they couldn’t replicate the issue so they didn’t check anything. Even though I even showed them a video of the issue. Security light does not stay illuminated when I crank so I wouldn’t think that would be an issue
