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10/03/2021 11:04 pm
Topic starter
Hi Scotty,
I got a 2004 Dodge Ram 1500 SLT Automatic with the 4.7L Magnum engine, having horrible gas mileage. Scanned for code P2097 Post Catalyst fuel trim system too rich bank 1 (Also P0740, P0300 probably unrelated). Muffler was recently replaced. Exhaust is white smoke. Checked exhaust pipes while cold and I did not see any smoke. O2 Tests came back green, Sensors 1 & 2 on Bank 1 0.10V to 0.75 V. Scan tool did not show data for other sensors. Checked wiring on sensors after catalytic, looked good (Possibly replaced recently). What should I do?
Thanks
1 Answer
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10/03/2021 11:09 pm
If one thing doesn't work, move on the next step. First, check for vacuum leaks. Second, clean mass air flow sensor. Third, change the oxygen sensor. Fourth, change the spark plugs.
