Looks to be so that FEBI is working perfectly , as well in ABC - at least in my friends same type of Mercedes. And one should remember also that on year 2001 the oils were not so developed, as they are today.
Thanks Dave - I will use a Finnish specialist for that; they did the same successfully already the ignition coil control box to my car and have experienced for these. Vekatronics Oy - Etusivu
I already agreed with them; they said that they have done it before and for other control boxes they do every day - have experience.
Yes, it is a job I've only recently started doing out of necessity due to my location and the "one off" nature of my SLK V8 Project. Also needs decent equipment too, I set up a whole bench dedicated to it in my office area
Just got the ABC Control Unit back from soldering and installed it back.
Yes! The problem was in bad solders. Now the pressure stays steady 173 bar all the time when testing Pressure Sensor with the STAR DAS! Earlier it was gradually going down, dropping, when running the 15 min test. Now it is 173 all the time!
Alk the issues are not solved yet, however, but this was the main issue, I assume. I changed the pump even twice - because the STAR was showing remarkable drop in pressure during the first 15 mins.
I just talked briefly with the guy who did the work; he said that the board was covered with silicon(?) which took a bit time to clean off first - and then he went through all the solder points. he mentioned that some of those were weak ones.
He also said about the two processors, that he did not see any reason to change those and did only the cleaning, soldering and covered all again with silicon (?). He said that it will now last more than this 20 years it already had lasted.
But really I have measured the pressure sensor testing many times and always it went down within that 15 mins - and once it even dropped - like collapsed - from 150 bar suddenly to 129 bars, but climbed up to 140 in two minutes; and then continued gradually reducing the value finally to level of something like 120. This was when I was doing only the pressure sensor testing, which lasts some 15 mins. And now it was amazing - just straight line steady from the start to end in 15 mins; 173 bar, not more, not less. I was expecting 190 bar.
Does anyone know how to test the STRUTS' internal leak with DAS ? I think I saw that one somewhere on its screen - but I am not sure is it even possible to do?
Looks to be so that the pressure control limits the pressure to 173. Maybe that is enough, but what happens after a while is an ISSUE:
If I elevate the car and actuate the level control, the pressure drops. If I run DYNAMIC TEST with DAS (3.000 RPM while DAS is raising and lowering the car automatically - I assume it is less than RODEO; and the car will not do it) , the pressure drops even down to 10 bar!
The locking solenoids work perfectly - the car stays overnight steady up - I have not tested longer time, cause it has been so interesting to test it; but I believe those solenoids are OK. The issue is somewhere in operation solenoids or in struts now.
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