I think this link may answer my question.I plan on doing some work myself.My fan clucth finally died on me but it was a gradual death.This caused the truck to overheat and the "check engine" and shut down" light kicked in which shut off the engine every 2 miles or so.Before this happened my uncle said there was a slight play bewteen the blade and the pulley.I just don't know what bull gears are but I may have read the shavings stories from the fan pulley/bearings.Petro charged me $2386 to change out the fan solenoid switch ,temp sensor and the fan clutch and a 100% mark up from freightliner parts.Now that I changed the fan clutch I may not have these shavings but then again I may be wrong.I also know that the engine master will talk me into spending money with him incase I take it in for diagnosis.
I am having this same problem in this link....
http://www.classadrivers.com/phpBB2/...t_0/index.html
my first codes respectively are 43,43,45,46 and 61.IT is hard to start especially at 50 degrees and below.I am having the exact problem as banditt in this thread.Mine does smoke for about 5 seconds after it starts. Sometimes it takes about 15-20 seconds to crank.After it cranks it also idles rough for about 6 and then levels out.On some occassions when it cranks the check engine comes on and then "shut down" light comes on which then cuts off the engine.
I am about to go get the Timing Reference sensor and the SRS.Exactly where are these sensors located on the 93 detroit 60s?I know where the temp sensor and the fan solenoid is located.Can someone please decode those codes for me?