MAP interchangeability question for MB 280sel 3.5 d-jectronic

Hi there everyone! Hope you have a restful weekend! Currently, I am replacing all wires of the ECU and checking all plugs for my 280sel 3.5 d-jectronic. I accidentally discovered that the P/N of the MAP is 028 100 030, however, in chapter appendix A: MB engine components written by Dr-DJet, it says that the MAP of my car should be P/N 0280 100 012. I would like to ask the experts here whether these MAPs are interchangeable or not. Should I buy a P/N 0280 100 012 to replace? Any comments are highly appreciated. Thanks your help in advance!

Thanks a lot for your confirmation! The reason why I have such question in mind is because I had shipped MAP 028 100 030 and ECU about half year ago to BOSCH for repairmen and recalibration, but there was no warning or reminder from BOSCH that these two are not matched, therefore, I assumed that they are compatible. And, BOSCH charged me for the service and reship the calibrated MAP and ECU back to me.

For now, I have bought a MAP 0 280 100 012 per your recommendation. Before installation, should I ship MAP 0 280 100 012 and the ECU to BOSCH for recalibration again? Appreciate your valuable advice. Thanks in advance for your help!

Understand thanks a lot~ Here comes the second question: I am not sure how to explain the reason to BOSCH that we need to recalibrate the newly bought MAP 0 280 100 012, because we have not installed or tried it yet and I am afraid a mis-calibrated MAP 0 280 100 012 will damage the ECU or the car if we tried to install before any assurance.

Besides, the famous/ specialized Australia parts rebuilder and seller (not from Ebay), who sold me the MAP 0 280 100 012, told me that the MAP is well rebuilt, tested and calibrated.

Do you think we should trust the seller, and install/try if it works first before sending to BOSCH for calibration? Would there be any risk of damage to the ECU/car if it turns out the MAP is not properly calibrated? Appreciated your expertise and input. Thanks again~

Thanks for your help! I thought this would be a separate problem, but it turns out it is highly related to my previous problem that I asked in this forum (jetronic.org/en/forum/jetronic/1980-d-jetronic-problem?start=0). All I did was renewing the D-Jet system's 23 wires and changing back to MAP 0 280 100 012, but it goes back to the same previous symptoms.

I disconnected all 8 electric plugs of injectors, and install 8 LED lights for examination. When ignition on (not cranking), only no.4 & 8 cylinder lights are on. When cranking, only no.4 & 8 and no.7 & 2 cylinder lights are on, but not no.1 & 5 and no. 3 & 6 cylinder lights.

After that, I disconnected the trigger wire connector and ignition on again (not cranking), only no.7 & 2 cylinder lights are on. When cranking, only no.4 & 8 and no.7 & 2 cylinder lights are on., but not no.1 & 5 and no. 3 & 6 cylinder lights.

To my understanding (not sure if it is correct), when ignition on (not cranking), all 8 cylinder LED lights should not be on. While cranking, all 8 cylinder LED lights should be on.

My problem now is, except ECU problem, what would cause only no.4 & 8 and no.7 & 2 cylinder lights are on when ignition on? As I said in my previous topic, I have recently sent ECU and MAP to BOSCH Classic for repairment, therefore, I cant and wouldn't suspect it is caused by the ECU malfunction. Appreciate your support and input as always!

Thanks for the new information! May i understand more about what fault in the trigger contacts will make injectors pulsed when ignition on (not cranking)? I have checked 4 trigger contacts and they are all of 157~160 dwell.

 

Thanks for your prompt reply!

When I disconnected throttle switch wire and ignition on, i can observe pulses in cylinder 4 and 8. Can we conclude that it is faulty ecu?

If i want to fix the ecu and map, should i contact bosch-classic koller & schwemmer or bosch-repair-service.com? are they the same company? Thanks again for your help!

Best regards,
Danny