My German spec E34 issue's list....
Ok, I just picked up a 1991 German spec 525i with about 180k km on the ticker. Here are my issues:
1) It has developed a surging idle while stopped. I have been told that this is the idle air control valve that needs to be cleaned. Will be doing that this weekend. Will also be replacing air filter, fuel filter, plugs, oil change, and bleed and check brakes.
1a) While under the hood, I noticed that my MAF plug was not fully seated on the MAF sensor. So I plugged it in and seated it properly and my car instantly developed a very "lumpy" idle and then stalled. When I unplug my MAF sensor it goes right back to the surging idle. Does this mean that my MAF is bad? That would be my guess.
1b) When you unscrew and unplug the MAF sensor, the sensor end has like 7 pins or something, I didnt count. The plug that comes off has the corresponding holes. I know this may be a dumb question, but on the plug end, only some of the holes have metal contacts down in them. Is every hole supposed to have one of those metal contacts to make contact wth the sensor end?
2) The car is German spec, so all messages on the dash are obviously in German. It is showing two. First is "Bremsflussigkeit", which I found in the german manual as low brake fluid. Will address that this weekend when I do the brakes. Other is "Betriebsanleitg." I cant find that on anywhere in the manual. Anyone speak German or have a German spec car that you know what this means?