check engine light (HELP)
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New User
Joined: Mar 2004
Posts: 7
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check engine light (HELP)
Hello, i currently installed a flowmaster exhaust system and a different intake on my 2003 5.4 f-150, after a couple weeks my check engine light came on, i had a diagnostic test done and it came up dealing with fuel air mixture, im not exactly sure which way it was but i think the guy told me it was running with too much air, i disconnected my battery and cleared it out, it stayed off for about 3 weeks then came back on, does anyone know how to fix this problem, i dont want to end up screwing up my truck, by the way i am changing the intake to another one, i think im going to go with FIPK, air force, or a voolant, any suggestions there? someone told me i could buy a hypertech programer to fix this, is this true? please help and any information would be greatly appreciated, thanks.
Junior User
Joined: Mar 2004
Posts: 51
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First thing I would do is to clean the mass air sensor with some electrical parts cleaner, just spray it in. If your motor is running lean in both bank 1 and 2 it is frequently caused from the MAF being dirty or bad.
