What is your question?
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What is your question?
Runs fine but fuel mileage is bad. Can clear the code but it comes back in a few minutes. All sensors have been replaced on the engine. Plugs Etc. Have you heard of what may cause this?
3 Replies
You forgot to mention what engine you had. Since your mileage is bad, I'm going to assume your fuel trim on Bank 1 is high (+25%). The most likely cause is a vacuum leak on the head somewhere (intake gasket, injector o-ring, pcv hose) if you already changed the Bank 1 O2 sensor. You really need a scantool with live data to properly diagnose the issue though. I use the Torque app and a cheap bluetooth odbII dongle.
ad live data with a scanner and watch fuel trims.it will give you an idea whats going on. you can always seek a prof diag