4k oil pressure gauge

[david.becker@lw.com]

     Abject apologies to the List for spamming everyone with a sizable 
     chunk of yesterday's digest.  Knew I f***ed up the second I sent it.  
     I swear it won't happen again; the numerous flaming replies have 
     conditioned me to avoid it.  (Kind of like electro-shock therapy.)
     
     Anyway, a real question:  since I replaced a failed timing belt ~1000 
     miles ago, my oil pressure gauge pegs itself off the scale (way past 5 
     bar) as soon as the electrical power in the car comes on, regardless 
     of whether the motor is actually running.  And it stays there until I 
     turn off the electrics.  The car seems to be running fine.  I'm 
     guessing this is just a screwed-up sensor (merely annoying), but could 
     I actually running max oil pressure from the moment I turn the key 
     (truly bad)?  Suggestions appreciated; couldn't find anything on this 
     in the archives.
     
     TIA,
     
     Dave
     '87 4ks, no Q/T