ok my 5.0 has a new 306 (setup described in sig) and has a lousy idle that will continuosly search for an idle no matter what i do, and will refuse to stay running while cold unless i keep my foot on the gas pedal. so i pulled the codes today and got #'s 41, 56, 63
i looked them up and got this:
41 is Ego/ h02s oxygen sensor always below lean on bank 1 no ego sensor rich/ lean transitions detected
56 is MAF sensor voltage to high
63 TPS voltage to low
i checked my tps and that is junk, it is at 1.45 at idle (with the screws in the stock location (drilled sensors holes into slots for adjustablility) and no matter how big you drill the slots it wont drop below 1v but above .5v (it was set ot .5 volts before), so im gonna replace that which i hope should fix code 63, but what is wrong with my mass air and code 41? i heard #41 may be caused by a vacuum leak i checked everywhere i could see for leaks with carb cleaner and nothing, could it be my lower intake gaskets didnt seal well? at a 900 rpm idle the engine pulls 10-12 " vacuum and it sweeps around a bit at 600 rpm it pulls 5" and jumps around a LOT, any help or insight is great btw i already read all pages of the surging idle checklist and searched around quite a bit
i looked them up and got this:
41 is Ego/ h02s oxygen sensor always below lean on bank 1 no ego sensor rich/ lean transitions detected
56 is MAF sensor voltage to high
63 TPS voltage to low
i checked my tps and that is junk, it is at 1.45 at idle (with the screws in the stock location (drilled sensors holes into slots for adjustablility) and no matter how big you drill the slots it wont drop below 1v but above .5v (it was set ot .5 volts before), so im gonna replace that which i hope should fix code 63, but what is wrong with my mass air and code 41? i heard #41 may be caused by a vacuum leak i checked everywhere i could see for leaks with carb cleaner and nothing, could it be my lower intake gaskets didnt seal well? at a 900 rpm idle the engine pulls 10-12 " vacuum and it sweeps around a bit at 600 rpm it pulls 5" and jumps around a LOT, any help or insight is great btw i already read all pages of the surging idle checklist and searched around quite a bit