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Old 12-05-2016, 03:27 PM   #1
dhspring
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Code P0174 lean bank on STS V8 North*

anyone got any ideas on what might be wrong with the V8 North* with a "lean bank" code P0174. It says possible mass air flow module or vacuum leak, checked manifold bolts and most places where a vac leak might be, nothing suspicious, will prob have to visit a Stealership to get repaired, but thought I'd check the brain trust here first. BTW it runs fine so whatever it is must not be too serious. Thanks!
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Old 12-05-2016, 04:05 PM   #2
maxwedge
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Re: Code P0174 lean bank on STS V8 North*

Could be a weak injector, dirty maf if so equipped, air getting behind the maf ducting. Try a couple of bottles of Chevron techron per instructions on the bottle ,give it time to work.
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Old 12-06-2016, 12:17 PM   #3
dhspring
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Re: Code P0174 lean bank on STS V8 North*

Anything out of a bottle is worth a try, thanks!
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