Re: Couple Problems..... Soft Code???
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Originally Posted by BowTie Eater 5 Liter
my problem is after 5000rpm the car doesnt like to work, it backfires and gets really stoopid... i just changed o2's, fuel filter, fuel pump relay(was getting a code for that). i get a "soft code" if i tromp on it through the first 3 gears(or more). the check light will come on and stay on until i let off, and i can not pull a code up for it. i was thinking the o2's were the problem, but now im leaning towards mass air sensor??? i havnt found a way yet to actually test to see if the meter itsself is screwed? does this sound like a condition of a bunk mass air meter?
another q, what should i have the fuel pressure set to running my combo(as ive just got the stock injectors for now) or should i leave it at 39psi?
thanks
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That's the problem....anytime the CEL turns on, there should be a code registered in memory, not having a code means there's a problem with the EEC-IV...what kind of problem?.....anything from a bad EEC relay, wiring, VPWR supply, ground, fubar'ed PIP signal, bad TPS, bad alternator (bad rectifier causing electrical noise) or,.......fubar'ed ECM.
How did the voltage check on the MAF go?  , did you get rid of code 56? LUK
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ACRONYMS:
LUK=Let Us Know, GL=Good Luck, LMK=Let Me Know, JIC=Just In Case, BTSTDTRT=Been There Seen That Done That Repaired That and the classic... DILLIGAS=Do I Look Like I Give A S***
1986 Mustang GT w/T-Tops 
NOW: 5.0L Stock SB, X303 Cam, 700 cfm DP Holley, 289 '66 Heads, 1.7 RR, Richmond Gear 4+1 Tranny, Centerforce DF, 2.73 Gears
WIP: 3.90 Gears, LS Overhaul, Adj. LCA's & UCA's (Granatelli), T-Top weather striping and rear braces bodywork 
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