« previous next »
Pages: [1] 2 3   Go Down

Author Topic: Oil Pressure Sending Unit?  (Read 53015 times)

Offline Shawn0331

  • Newbie
  • Posts: 96
  • Newbie
    • My Blog
Oil Pressure Sending Unit?
« on: May 12, 2012, 12:36:44 am »
My oil pressure gauge hasn't worked since I got my truck. I'd like to know what's going on. The gauge is pegged all the way out and doesn't move.

Will this solve my problem?

Or is there a different solution?
Logged
1987 Chevy V10 Silverado SWB 5.7 on 33x12.5's
http://www.shawnseeley.com

Offline bd

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6600
Re: Oil Pressure Sending Unit?
« Reply #1 on: May 12, 2012, 02:13:59 am »
If you have factory GM gauges, you have an open in the sender, sender wiring or gauge connection to PC board.  With ignition ON try jumping the sender wire directly to a good ground and see if the gauge drops to zero.
Logged
Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 19174
Re: Oil Pressure Sending Unit?
« Reply #2 on: May 12, 2012, 08:27:17 am »
Agreed, is the wire connected?
Logged
,                           ___ 
                         /  _ _ _\_
              ⌠¯¯¯¯¯'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Shawn0331

  • Newbie
  • Posts: 96
  • Newbie
    • My Blog
Oil Pressure Sending Unit?
« Reply #3 on: May 12, 2012, 08:50:39 am »
I'm headed to my dad's today to do the passenger-side ball joints. I'll take a look then.

On an '87 I need to look behind the distributor and by the oil filter, right?
Logged
1987 Chevy V10 Silverado SWB 5.7 on 33x12.5's
http://www.shawnseeley.com

Offline bd

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6600
Re: Oil Pressure Sending Unit?
« Reply #4 on: May 12, 2012, 09:51:55 am »
Look both places, but gauge sender should be the one near the oil filter.
Logged
Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline Shawn0331

  • Newbie
  • Posts: 96
  • Newbie
    • My Blog
Re: Oil Pressure Sending Unit?
« Reply #5 on: May 12, 2012, 10:48:48 am »
Looked under the truck just now. Is this it?


Logged
1987 Chevy V10 Silverado SWB 5.7 on 33x12.5's
http://www.shawnseeley.com

Offline bd

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6600
Re: Oil Pressure Sending Unit?
« Reply #6 on: May 12, 2012, 11:29:00 am »
You're pointing at the O2 sensor.  I don't see the oil sender in your pix.  Do you see a wire dangling loose anywhere near the oil filter?  Take a look next to the distributor and snap a pic.

Is that freeze plug showing a little rust?   :o
Logged
Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline jason d o

  • Newbie
  • Posts: 29
Re: Oil Pressure Sending Unit?
« Reply #7 on: May 12, 2012, 11:34:45 am »
That looks like the oxygen sensor. I have an 86 model myself and my sending unit is by distributor. I'm sure mine is different from yours. I'm sure somebody will chime in here and give you a good picture at where it is.
Logged

Offline Shawn0331

  • Newbie
  • Posts: 96
  • Newbie
    • My Blog
Oil Pressure Sending Unit?
« Reply #8 on: May 12, 2012, 08:50:45 pm »
This maybe?

Logged
1987 Chevy V10 Silverado SWB 5.7 on 33x12.5's
http://www.shawnseeley.com

Offline 454Man

  • Senior Member
  • ****
  • Posts: 1027
  • Why Race?
Re: Oil Pressure Sending Unit?
« Reply #9 on: May 12, 2012, 09:10:49 pm »
Its right behind the distributor... To the right alittle
Logged

Offline Irish_Alley

  • Tim
  • Senior Member
  • ****
  • Posts: 13333
  • Family is not an important thing. It's everything.
Re: Oil Pressure Sending Unit?
« Reply #10 on: May 13, 2012, 12:48:27 am »
drivers side right behind the distributor, that second one is the knock sensor
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline Shawn0331

  • Newbie
  • Posts: 96
  • Newbie
    • My Blog
Oil Pressure Sending Unit?
« Reply #11 on: May 13, 2012, 08:06:46 am »
Really appreciate all the help. I'm learning a lot!
Logged
1987 Chevy V10 Silverado SWB 5.7 on 33x12.5's
http://www.shawnseeley.com

Offline Fairlane514

  • Frequent Member
  • **
  • Posts: 493
  • Newbie
Re: Oil Pressure Sending Unit?
« Reply #12 on: May 13, 2012, 09:55:36 am »
Thats also the wrong part from Oreilly's you refer to in your first post. You will need the one for the factory GM gauge, not Auto Meter.
Logged

Offline Irish_Alley

  • Tim
  • Senior Member
  • ****
  • Posts: 13333
  • Family is not an important thing. It's everything.
Re: Oil Pressure Sending Unit?
« Reply #13 on: May 13, 2012, 10:39:24 am »
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline Shawn0331

  • Newbie
  • Posts: 96
  • Newbie
    • My Blog
Oil Pressure Sending Unit?
« Reply #14 on: May 28, 2012, 01:27:57 pm »
Trying to find this elusive oil pressure sending unit to the right of the distributor... Is this disconnected wire supposed to connect to it?

I'm not seeing anything else interesting to the right of the distributor.

Logged
1987 Chevy V10 Silverado SWB 5.7 on 33x12.5's
http://www.shawnseeley.com
Pages: [1] 2 3   Go Up
« previous next »