Guys,
I got it fixed finally. Hissing, loud noise at cold start is what was killing me for last 3 years. I just recently started getting CEL with references to air pump and air flow. I read tons of posts on how to fix the codes but I guess everyone thinks noise is normal. Well, it is not.
The pump is actually 3 parts connected together by plastic snaps and there are some rivets that go thorough all 3 parts. Well, rivets are cheap and they came off. I always give kudos to Germans for their genuine products, and this is not the genuine product at all. It is not made that well if you ask me. So thumbs down for this one http://****************.com/smile/emthdown.gif
Anyways, the hissing comes out the pump as the top section and other pump sections are not seated fully. I am not sure what caused this but pushing it in does not solve the problem. It looks like it deformed from heat or it was hit by something. I was able to press the top of the pump and the noise stepped but as soon as I let it go, it starts hissing at me again. I called the stealership today and they were unable to confirm there were screws going through the rivet. So I figured out I will do it the Serbian way.
PRE FIX
1. Remove top and bottom engine cover
2. Find skinny pair of hands
FIX
1. Remove rivet

2. Use 8/32 1.5 inch screw with locking nut
3. Stick it in instead of rivet
4. Use 8mm socket to tighten until gap is gone

5. Open Heineken and enjoy the fruits of your labor
6. Put some ointment on your hands as they are scratched up and hurt as hell at this point
This will now put me in a good position to troubleshoot the CEL which could be caused by this but maybe not.
Modified by hdudic at 6:10 PM 5-26-2007
Modified by hdudic at 6:12 PM 5-26-2007
I got it fixed finally. Hissing, loud noise at cold start is what was killing me for last 3 years. I just recently started getting CEL with references to air pump and air flow. I read tons of posts on how to fix the codes but I guess everyone thinks noise is normal. Well, it is not.
The pump is actually 3 parts connected together by plastic snaps and there are some rivets that go thorough all 3 parts. Well, rivets are cheap and they came off. I always give kudos to Germans for their genuine products, and this is not the genuine product at all. It is not made that well if you ask me. So thumbs down for this one http://****************.com/smile/emthdown.gif
Anyways, the hissing comes out the pump as the top section and other pump sections are not seated fully. I am not sure what caused this but pushing it in does not solve the problem. It looks like it deformed from heat or it was hit by something. I was able to press the top of the pump and the noise stepped but as soon as I let it go, it starts hissing at me again. I called the stealership today and they were unable to confirm there were screws going through the rivet. So I figured out I will do it the Serbian way.
PRE FIX
1. Remove top and bottom engine cover
2. Find skinny pair of hands


1. Remove rivet

2. Use 8/32 1.5 inch screw with locking nut
3. Stick it in instead of rivet
4. Use 8mm socket to tighten until gap is gone

5. Open Heineken and enjoy the fruits of your labor

6. Put some ointment on your hands as they are scratched up and hurt as hell at this point
This will now put me in a good position to troubleshoot the CEL which could be caused by this but maybe not.
Modified by hdudic at 6:10 PM 5-26-2007
Modified by hdudic at 6:12 PM 5-26-2007