98 A4 Codes Help

[thedoc456789]

This car has been giving me fits for a while now. All this points to a vacuum leak but all the hose has been replaced. Just kinda stumped as to what I'm missing. These are the only codes. Any ideas? Address 01: Engine Labels: 078-907-551 AHA.LBL Control Module Part Number: 4D0 907 551 AH Component and/or Version: 2.8L V6/5V MOTR AT D01 Software Coding: 06251 Work Shop Code: WSC 06335 VCID: 6CD9327A1C90D63 2 Faults Found: 17545 - Fuel Trim: Bank 1 (Add) P1137 - 35-10 - System too Rich - Intermittent 17547 - Fuel Trim: Bank 2 (Add) P1139 - 35-10 - System too Rich - Intermittent Readiness: 0000 0100

[thedoc456789]

2nd gear run to redline. Is the mass air sensor on its way out?

Time RPM Engine Injection g/s
13.71 3640 5.8 11.46 84.65
13.96 3800 6.2 14.27 94.51
14.25 3880 6.25 13.18 97.29
14.52 4000 6.25 13.12 100.07
14.77 4040 6.25 13.12 101.25
15.05 4080 6.25 13.12 102.71
15.31 4120 6.25 13.18 103.61
15.58 4200 6.2 13.06 104.37
15.84 4280 6.2 12.93 105.97
16.12 4400 6.1 12.8 107.36
16.41 4520 6.05 12.61 108.82
16.68 4600 6 12.29 110.42
16.97 4720 6.3 13.06 118.82
17.26 4840 6.35 12.93 122.64
17.57 4920 6.3 12.99 124.86
17.88 5040 6.3 13.06 126.94
18.2 5160 6.25 12.86 129.17
18.51 5280 6.25 12.99 131.59
18.85 5400 6.25 13.06 134.51
19.18 5520 6.25 13.12 137.92
19.53 5600 6.25 13.25 140.21
19.87 5720 6.25 13.12 142.78
20.22 5840 6.2 13.12 145.34
20.57 5960 6.2 12.99 147.29
20.95 6080 6.1 12.86 148.47
21.3 6200 6.05 12.8 149.51
21.69 6280 5.95 12.48 150.07

[Uwe@Ross-Tech.com]

Those fault codes are not normally indicative of a intake leak; I would expect an intake leak to produce lean codes, not rich.

Been here?
http://wiki.ross-tech.com/wiki/index...5/P1137/004407

I would check the vacuum line to the fuel pressure regulator first. If you're not getting vacuum to it, then your fuel pressure will be too high at idle, which would be consistent with these codes.

-Uwe-