Power loss MAF?

[processpaul]

May 55plate Altea has recently lost power. I've disconnected the MAF, which made no difference so i suspect the MAF is shot. no faults listed from VAG-com.

I've started doing some logs, but all posts on checking the MAF point towards plotting Actual vs Specified, mg/str in VC scope.

The lable file that appears for my car is P/N: 03G-906-016-BKC 1.9tdi.

I logged group 3 10,11 but it does not list a MAF "specified".

My log of MAF, this might not have been a good run as I am not sure what i was doing and the wife looked disinterested!


RPM MAf Actual.
1722 225
1722 175
1701 355
1743 435
1764 440
1806 430
1827 450
1869 455
1890 455
1911 310
1911 300
1890 345
1890 335
1890 255
1869 235
1869 235
1869 220
1890 205
1911 200
1911 205
1911 200
1911 205
1932 200
1953 200
1932 210
1932 210
1974 215
1995 225
2037 400
2037 480
2079 495
2079 495
2121 500
2142 500
2163 510
2184 505
2184 510
2163 510
2184 500
2184 500
2163 505
2163 510
2163 245
2184 220
2205 510
2226 230
2268 580
2289 725
2331 385
2394 900
2478 1125
2562 950
2646 780
2730 880
2793 900
2877 880
2919 835
2940 745
2940 645
2940 895
2940 795
2961 780
2961 795
2982 815
3003 850
3045 890
3087 875
3129 855
3192 840
3234 830
3276 825
3318 825
3339 810
3381 815
3402 815
3423 815
3444 820
3465 830
3486 830
3507 825
3528 840
3570 835
3591 830
3591 820
3633 815
3612 640
2688 835
2562 1090
2562 815
2604 855
2625 800
2541 500
2541 490
2478 470
2436 480
2373 485
2310 475
2247 470
2184 475
2142 480
2079 485
2037 485
1974 495
1512 465
2436 420
2583 425
2562 660
2604 965
2499 565
2478 535
2394 525
2310 520
2247 500
2163 490
2100 485
2100 595
2037 630
2079 1000
2184 1105
2268 915
2373 835
2478 845
2562 855
2667 875
2751 875
2856 865
2940 845
3024 830
3045 690
3087 700
3108 605
3108 465
3087 415
3066 395
3003 505
2940 515
2877 505
2814 495
2709 490
2604 490
2436 495
2289 490
2142 475
1974 475
1806 490
1617 465
1428 460
945 275
819 275
819 255
819 225
819 215
819 210
819 205
819 205
819 355
882 230
840 230
1092 420
1449 265
987 295
840 230
840 205

 

[processpaul]

Bump

 

[sssstew]

youve only logged maf actual, to check you need MAF requested vs MAF actual.

See here http://www.ross-tech.com/vag-com/cars/tdi.html

 

[processpaul]

sssstew.

Granted, i only posted my actual MAF readings as i thought the label file says that specified range for the MAF (i.e hover over the blocks when measuring) so thought someone might see something obvious

I'll get logging again, but i'm struggling to find my MAF requested block. its not listed in the label file from what i can see.

thanks