fluctuating boost-ideas?
 

My '93 300d was running good till it started going from full boost to nill at full throttle.I blew though the alda line that goes to the intake and ele. thingy next to the battery.Swapped the air box out with another one thinking it might be that ele. door.no luck.Any thoughts?

lack of fuel.
Check your pre-filter and replace the main filter.
(make sure the fuel line from the tank is free, strainer)

Tom

thanks tomnik- that will be my next check.

Vacuum leaks in p2 system.

Bypass the boost cut out switch and see if it stays on.

Ya if its fluctuating at WOT dont even try bypassing it, you are overboosting. I missed that detail in title and just read the content.

p2 system?

Rtfm