no oil pressure, engine runs fine

Asked by Apr 16, 2015 at 01:56 AM about the 1995 Chevrolet C/K 2500 Cheyenne Extended Cab SB 4WD

Question type: Maintenance & Repair

So today I took my truck to a friends to get a trailer,hooked up and when I got home
the check guage light eas on and my oil pressure was 0.  Shut the truck off, checked
oil level, full and still looking new, been about 1500 miles on it.  Looked under truck, no
leaking or spraying of oil.  Started truck, pressure guage goes to 20 then drops to 0.  
engine sounds normal, even when revving it.  Guage used to read 80 when starting
and around 40 at operating temp.  Is this the sending unit?  Its a vortec 7.4L with
160,000 miles on it

1 Answer

45

Most probably it is the sending unit or the connection to it is loose. If it was a bad oil pump your engine would already be toast.

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