Thanks for the reply RG and I'm glad you got your sorted (in the end) where did you get your pump from and can you remember how much it cost?
I wouldn't know where to start doing a live diagnostic
Here is a place that has the correct OEM pump available:
New Bosch Intercooler Pump 0392022010 Mercedes 0005000386 | eBay
Here is some info about the original pump and the latest version of the pump made by Bosch - see posts 15 thru 29:
https://www.crossfireforum.org/forum...placement.html
Here are some comparison photos of the pump I removed and the new pump that is available:
https://www.crossfireforum.org/forum/...mp-change.html
Good luck!!
RL