Originally Posted by
onehundred80
If I had this surging problem I would reinstall the OEM components and start again.
Before doing that I would study the various seals that are between the engine cover/MAF housing/elbow/throttle body and intake O-ring, also the O-ring on the MAF sensor. A total of five seals if I remember correctly, any one could be faulty.
The ones after the MAF sensor would be most likely to cause trouble I think. The one between the MAF housing and elbow could easily be torn as I recall that was hardest to separate by depressing the clip and tilting the MAF housing.
I assume all the seals are there. I cannot remember if the MAF sensor can be installed upside down, you never know though. LOL
Thanks, Dave. But, everything has been as OEM for a number of days now. My whole
life is involved with making perfect pressure and vacuum seals. They are all 100%. The MAF cannot be installed backwards. Eccentric pattern. All hoses vacuum tested. (Yes, I have a small hand-operated vacuum pump for this!)
I'm going to drive it this coming week and see if it is just still in "learning" mode. We know, after all, that Germans don't learn too quickly. Or, at least, they need more than one lesson, right?
