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Oil pressure switch ?

Posted: Mon Oct 30, 2017 7:22 pm
by Rookie
Is there a cross reference part number for the oil pressure switch that i can get at an auto parts store.i looked at a few that would work but just not sure.i know i can order one but im doing some mantinence work on it tomorrow and would lime to have it done thanks in advance

Re: Oil pressure switch ?

Posted: Fri Nov 03, 2017 6:39 pm
by Rookie
Found one that works at the local auto parts store 9.99 and in stock

Re: Oil pressure switch ?

Posted: Sat Nov 04, 2017 9:27 am
by undysworld
That's nice to know.

Even nicer would be the part #, etc., for others to reference to as well. :wink:

Re: Oil pressure switch ?

Posted: Sat Nov 04, 2017 9:58 am
by Hotzenplotz
undysworld wrote:Even nicer would be the part #, etc., for others to reference to as well. :wink:
my pleasure

the original VDO part # is 360 081 030 017; look for compatible alternatives

Re: Oil pressure switch ?

Posted: Sun Nov 05, 2017 1:03 pm
by Rookie
Will do undy ill look for the box and get a part number and post it

Re: Oil pressure switch ?

Posted: Wed May 09, 2018 12:45 pm
by bbonomo
Can someone kindly share where the existing oil pressure switch is located? Can I use it to drive a relay to turn an electric fuel pump off, in the event I lost engine power?

Re: Oil pressure switch ?

Posted: Wed May 09, 2018 12:50 pm
by pcolette
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Don't know about the relay.

Re: Oil pressure switch ?

Posted: Wed May 09, 2018 1:19 pm
by bbonomo
Thank you! Dumb question, what does it do? I assume that it's simply a sensor to drive the light on the dash. Correct?

Re: Oil pressure switch ?

Posted: Wed May 09, 2018 2:07 pm
by pcolette
If I'm following the schematic correctly, +24V is run to the oil pressure warning light on the indicator strip and then a wire proceeds from the second terminal on the warning light to the sensor. If the engine loses oil pressure, the pressure switch closes to ground and illuminates the warning light. This is also why the light is on when you turn on the ignition switch.

So, yes, you are correct.

Re: Oil pressure switch ?

Posted: Thu May 10, 2018 12:27 pm
by TechMOGogy
Related to this topic...
I noticed the other day my oil light went on while I was at light idling - truck was well warmed up.
As soon as I add a few RPM (idles about 875-900) the light goes out.
Pulled over and checked oil - levels were perfect
Any thoughts - bad switch?

Re: Oil pressure switch ?

Posted: Thu May 10, 2018 12:53 pm
by pcolette
Since the switch is relatively inexpensive, I would give that a try first.
Other than that, all other reasons for low oil pressure are not as easy to repair. Perhaps the oil pump has developed a leak? Or come partially loose? Jim LaGuardia would be a good resource for possible causes.

Re: Oil pressure switch ?

Posted: Thu May 10, 2018 1:01 pm
by TechMOGogy
pcolette wrote: Thu May 10, 2018 12:53 pm Since the switch is relatively inexpensive, I would give that a try first.
Other than that, all other reasons for low oil pressure are not as easy to repair. Perhaps the oil pump has developed a leak? Or come partially loose? Jim LaGuardia would be a good resource for possible causes.
Makes sense
Engine was completely rebuilt so hopefully nothing serious already :)

Re: Oil pressure switch ?

Posted: Mon Jun 04, 2018 7:43 pm
by boeing7873
Oil too thin for temperature? I run 20W50 summertime.

Re: Oil pressure switch ?

Posted: Mon Jun 04, 2018 8:24 pm
by TechMOGogy
boeing7873 wrote: Mon Jun 04, 2018 7:43 pm Oil too thin for temperature? I run 20W50 summertime.
After a few more test drives this is what I am thinking too
Only happens after driving straight for 1-2 hours
I can drive around for 30 mins, stop, shop, drive, etc and it does not happen

Re: Oil pressure switch ?

Posted: Mon Jun 04, 2018 9:06 pm
by rmel
IMHO, add a Oil pressure sender and a Oil Temp sender -- esp. Temp.
Pressure senders typically have the idiot contact -- LOW pressure and
an analog output for actual pressure. Well worth the addition for
piece of mind.