1996 caddilac deville,4.6 LTFT at 37% and STFT at 25%..worst at idle.. better driving but, still not good..LTFT at 15% to 25%... the code resets pretty quick. fuel press and volume ok 40 to 50 PSI and 16 ounces volume in 15 seconds MAF 6 GPS at idle 200GPS at ... Login to read more.