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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: gwcrim on October 04, 2016, 03:45:05 pm

Title: oil pressure sending unit
Post by: gwcrim on October 04, 2016, 03:45:05 pm

My truck is a 1980 2wd that came with a 305 and idiot lights in the dash.  I put a factory gauge dash in it and wired it up and it all works fine except for the oil pressure gauge.  Sometimes it doesn't work at all, sometimes it's pegged.

For a sender, I got a Standard PS154 from Summit.  I believe that's the correct number for a 1980 with gauges.  My hunch is that there are two issues.  First, there is a loose connection.  Second, I have the wrong sender.  Is there more than one sending unit or does my trouble lie elsewhere?

Title: Re: oil pressure sending unit
Post by: VileZambonie on October 04, 2016, 04:03:48 pm

Try a PS140 and check your connections

Title: Re: oil pressure sending unit
Post by: gwcrim on October 04, 2016, 04:20:36 pm

I picked up a PS140 on the way home.  Thanks.

Title: Re: oil pressure sending unit
Post by: gwcrim on October 04, 2016, 04:59:00 pm

Success!

 I'm suspecting that the loose connection is the  plug on the sender wire.  There were some other connections under the hood that were oxidized pretty badly.

Thank you Mr. Z.