VANOS Cam Bolts Replacement

[Bob Sacamano]

I decided to run the VANOS test via Tool32, and these were the results. The response times seem good...perhaps even good enough that it makes me wonder if I should touch my VANOS at all (other than inspecting tabs).

That said, I'm not sure how to interpret "STEUERN_EVANOS1_FRUEHANSCHLAG". Everyone else seems to have 0 for ISTWERT while mine is 8. Anything else notable in here?

Thank you all, again.

Test file : C:\EDIABAS\ECU\MSS54_VANOS_TESTS.TST
Start     : 30.09.2025 22:23:29.7
Nr 1(  1) : 30.09.2025 22:23:29.8
apiJob("mss54ds0","STEUERN_EVANOS1_FRUEHANSCHLAG","","")
  JOB_STATUS                      = OKAY        
  EVAN_ISTWERT                    = 8                  00 08  ..      
  EVAN_SOLLWERT                   = -10          FF FF FF F6  ÿÿÿö    
  EVAN_ISTWERT_EINH               = Grad KW    
  EVAN_SOLLWERT_EINH              = Grad KW    
Nr 2(  1) : 30.09.2025 22:23:35.1
apiJob("mss54ds0","STEUERN_EVANOS1_SPAETANSCHLAG","","")
  JOB_STATUS                      = OKAY        
  EVAN_ISTWERT                    = 68                 00 44  .D      
  EVAN_SOLLWERT                   = 75                 00 4B  .K      
  EVAN_ISTWERT_EINH               = Grad KW    
  EVAN_SOLLWERT_EINH              = Grad KW    
Nr 3(  1) : 30.09.2025 22:23:40.5
apiJob("mss54ds0","STEUERN_EVANOS1_VERSTELLZEIT","","")
  JOB_STATUS                      = OKAY        
  EVAN_VERSTELLZEIT_FRUEH         = 214                00 D6  .Ö      
  EVAN_VERSTELLZEIT_SPAET         = 218                00 DA  .Ú      
  EVAN_VERSTELLZEIT_FRUEH_EINH    = ms          
  EVAN_VERSTELLZEIT_SPAET_EINH    = ms          
Nr 4(  1) : 30.09.2025 22:23:46.9
apiJob("mss54ds0","STEUERN_EVANOS1_DICHTHEIT","","")
  JOB_STATUS                      = OKAY        
  EVAN_STATUS                     = EVANOS-1-Einheit vorzeitig weggedriftet
Nr 5(  1) : 30.09.2025 22:24:01.5
apiJob("mss54ds0","STEUERN_AVANOS1_FRUEHANSCHLAG","","")
  JOB_STATUS                      = OKAY        
  AVAN_ISTWERT                    = 0                  00 00  ..      
  AVAN_SOLLWERT                   = -10          FF FF FF F6  ÿÿÿö    
  AVAN_ISTWERT_EINH               = Grad KW    
  AVAN_SOLLWERT_EINH              = Grad KW    
Nr 6(  1) : 30.09.2025 22:24:06.9
apiJob("mss54ds0","STEUERN_AVANOS1_SPAETANSCHLAG","","")
  JOB_STATUS                      = OKAY        
  AVAN_ISTWERT                    = 49                 00 31  .1      
  AVAN_SOLLWERT                   = 55                 00 37  .7      
  AVAN_ISTWERT_EINH               = Grad KW    
  AVAN_SOLLWERT_EINH              = Grad KW    
Nr 7(  1) : 30.09.2025 22:24:12.4
apiJob("mss54ds0","STEUERN_AVANOS1_VERSTELLZEIT","","")
  JOB_STATUS                      = OKAY        
  AVAN_VERSTELLZEIT_FRUEH         = 161                00 A1  .¡      
  AVAN_VERSTELLZEIT_SPAET         = 208                00 D0  .Ð      
  AVAN_VERSTELLZEIT_FRUEH_EINH    = ms          
  AVAN_VERSTELLZEIT_SPAET_EINH    = ms          
Nr 8(  1) : 30.09.2025 22:24:18.7
apiJob("mss54ds0","STEUERN_AVANOS1_DICHTHEIT","","")
  JOB_STATUS                      = OKAY        
  AVAN_STATUS                     = AVANOS-1-Einheit vorzeitig weggedriftet
Stop      : 30.09.2025 22:24:34.1
Dauer     : 64.5 s

​

[Bob Sacamano]

Found a good reference on these numbers, and it looks like my intake side is off by 8 degrees? That seems...less than ideal.

[maupineda]

Don’t mess with it. All good. If the car passes the test it can achieve proper cam position.

you can check VANOS adaptations and see how much the cams need to be offset, there is up to 10deg of tolerance. If you want to fix it you need to retime which seems to be what you want to avoid.

if the car drives normal you won’t gain anything other than OCD satisfaction.

your adjustment times are really good. You did not run leak test, but give your adjustment times they will be fine.

[sapote]

I decided to run the VANOS test via Tool32, and these were the results. The response times seem good...perhaps even good enough that it makes me wonder if I should touch my VANOS at all (other than inspecting tabs).

vanos test results have nothing to do with adding Loctite to cam sleeves bolts and pump disk new smaller holes drilling. These mods are for higher reliability.