A 92 740 Turbo should not be KE jet.
(EDIT my WAG would be CTS)
(EDIT #2 Ignition switches are also a known problem)
Go here:
http://www.brickboard.com/
Look at the "700-900 FAQ" Its bailed me out EVERY time.
http://www.brickboard.com/FAQ/700-900/
(90 744t)