Yes I have a mighty vac I also have a vacuum pump .I spent today pulling the trans to fix the leaks. It had one at the rear modulator on pass side and the frt pump.I pulled the pump and took it apart the oring in there was hard as a rock were these rubber at one time or did they use some kind of nylon.The rear modulator seal was the same..Also found that rear output bearing or it maybe a bushing is loose did not have the socket to take it off to see what is worn out.I looked around and found that the egr has been disconected found were the line sould be coming from and it is pluged at the relay on the fender well.

__________________

89 Ford F3504x4CC 7.3 IDI turboed Intercooler and running on wvo now powered by a 1997 Cumins
87 300SDL on bio and wvo killed by chevy truck 5-24-06
1999 E300TD black with gray int.