could be worn rocker arms ( under valve covers ) or lifters
could be the alternator going bad or battery.
it could be so many diffrent things google "error codes for a 1994 fleetwood brougham" it will send you to myweb.accesuss.com or .net..very usefull in tracking down the cause
A clicking noise in the engine of a 91 Ranger could indicate a problem with the valves. A valve lifter in the engine may be worn or stuck.
Could be one or more of many possibilities. It would have to be diagnosed.
It means the engine computer has detected a malfunction and set a trouble code.
There are no safety rating or crash test results available for the Cadillac Allante. In 1994 there was a safety recall involved with the Cadillac Allante where part of the air condition could cause an engine fire.
Depending on the engine, the coolant temperature in a Cadillac could be from 180 to 195 degrees. The thermostat can be changed to give a lower or higher temp reading.
could be your thermostat or you have no antifreeze coolant or your water pump is going bad
check oil and oil pressure if good sell it
fan belt or lots of things but most likely fan belt
Generally a "clicking sound" is a value or lifter issue but could also be injectors you need to see a Mechanic about it. Another possibility could be your oil level have you checked it lately. Hope This Helps.
did u check the antifreeze/coolant level because my 91 fleetwood was doin the same thing i filled it up and now the heats comin out real good