Is this my oil sending unit? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jojo · 09-03-2009, 11:28 PM

Is that my oil sender?
If not is it in this pic?
If so why is there 2 wires?
Where do those wires go to?

jholley · 09-03-2009, 11:42 PM

If that comes out of the block behind the intake then yes it is an oil pressure sender. That particular one is for a oil pressure light though, not a gauge. It is just designed to turn on/off a light at some preset pressure setting. The one for an electrical gauge (not a direct pressure reading unit) is usually larger in diameter and down by the oil filter.

FRENCHBLUE72 · 09-03-2009, 11:42 PM

Looks like it could be but see that brass fitting in the upper right corner of the pic? Thats for the oil sender(mechanical gauge)

Longhorn Man · 09-03-2009, 11:47 PM

that looks like some one just shoved it into the intake to block a port... can you get a betterr photo, maybe where it is threaded into the engine?

jojo · 09-04-2009, 12:04 AM

Quote:

Looks like it could be but see that brass fitting in the upper right corner of the pic? Thats for the oil sender(mechanical gauge)

So it looks like the oil goes through the fitting into the back of the dash in to the gauge? I'm guessing that's stock?

Quote:

that looks like some one just shoved it into the intake to block a port... can you get a betterr photo, maybe where it is threaded into the engine?

Here's a closer pic:

unclewatts · 09-04-2009, 12:14 AM

I'm gonna go with Longhorn man on this one. I'll bet the PO just used it as a plug.

Elephanthead · 09-04-2009, 05:35 AM

That's not in the right place, I can't imagine there is oil there, take it off and see if oil squirts all over the place.

Longhorn Man · 09-04-2009, 06:22 AM

it is being used as a simple pipe plug, it is serving no oher use at this moment and place.

jay6891 · 09-04-2009, 08:34 AM

x2, if anything its screwed into a water jacket.

jojo · 09-04-2009, 09:54 AM

I see how that pic looks like the plug is going into the intake but its actually not.Heres a better look at it (right behind the intake):

geezer#99 · 09-04-2009, 10:17 AM

I disagree. It's fitted into the block. It's an oil pressure sensor. Had one on a smallblock I had. It was strangely used to control the power to my electric choke. Like a kill switch. If I had oil pressure the choke worked right. Unplugged it and the choke closed completely and car wouldn't start. All factory wiring on my new 78 Nova. Ya, I'm that old. LOL

jojo · 09-04-2009, 10:49 AM

Yeah JHolley was right, its for the dummy light (as the napa guy called it).
I picked up a tubing kit and I'll hook it up tonight. Let's hope there's no leaks up by the gauge.

retodd7711 · 09-04-2009, 12:56 PM

Quote:

Originally Posted by jojo

Let's hope there's no leaks up by the gauge.

If there is, you'll find out quick!
I like to use the two-man approach, one under hood, one in cab to watch for oil leaks and watch gauges.

Longhorn Man · 09-04-2009, 04:27 PM

wow... those first two pics looked like it was in the intake.

**michael bustamante** · 09-04-2009, 07:09 PM

thats where my oil pressure guage line screws into

jojo · 09-05-2009, 12:06 AM

Well I almost fixed it. That kit had 2 compression fittings and I screwed up both of them at the sending unit location so there's a little leak coming out the top of the fitting. The gauge side worked and went right in. Off to find some more fittings tomorrow. Thanks for the help fellas.

By the way, I was trying to see if the water temp sender was working so while the truck was running, I put the positive lead from my meter on the end of it and grounded the negative lead and got about 13 volts. So that means my temp sender is working right?

09-03-2009, 11:28 PM	#1
jojo printing is my trade Join Date: May 2009 Location: San Antonio, Texas Posts: 349	Is this my oil sending unit? Is that my oil sender? If not is it in this pic? If so why is there 2 wires? Where do those wires go to? Attached Images __________________ Jojo's '70 stepside build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=344184

09-03-2009, 11:42 PM	#2
jholley Registered User Join Date: Jul 2008 Location: TX Posts: 737	Re: Is this my oil sending unit? If that comes out of the block behind the intake then yes it is an oil pressure sender. That particular one is for a oil pressure light though, not a gauge. It is just designed to turn on/off a light at some preset pressure setting. The one for an electrical gauge (not a direct pressure reading unit) is usually larger in diameter and down by the oil filter. __________________ ------------------------------------------------- Jim Garage fillers... 85 Chevy C10 Silverado LWB 07 Nissan Altima 2006 Mini Cooper S Last edited by jholley; 09-03-2009 at 11:44 PM.

09-03-2009, 11:42 PM	#3
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,608	Re: Is this my oil sending unit? Looks like it could be but see that brass fitting in the upper right corner of the pic? Thats for the oil sender(mechanical gauge) __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

09-03-2009, 11:47 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Is this my oil sending unit? that looks like some one just shoved it into the intake to block a port... can you get a betterr photo, maybe where it is threaded into the engine?

09-04-2009, 12:14 AM	#6
unclewatts 70 Chevrolet=Obsession Join Date: Jun 2009 Location: nice ca Posts: 1,067	Re: Is this my oil sending unit? I'm gonna go with Longhorn man on this one. I'll bet the PO just used it as a plug. __________________ I'm Just like my truck. Old, Ugly and Grouchy. Except my truck starts easily in the morning and doesn't smoke! IT'S NOT EASY BEING GREEN! -Kermit the frog 1970 Chevrolet C-10 Longbed Stepside : 350, Muncie M20, 3.08 GM corp. positraction Forest green exterior/light green interior(Where all my money goes) 1996 Toyota Corolla (Parts runner) Last edited by unclewatts; 09-04-2009 at 02:53 AM.

09-04-2009, 05:35 AM	#7
Elephanthead Registered User Join Date: Nov 2008 Location: Carmel, IN Posts: 187	Re: Is this my oil sending unit? That's not in the right place, I can't imagine there is oil there, take it off and see if oil squirts all over the place.

09-04-2009, 06:22 AM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Is this my oil sending unit? it is being used as a simple pipe plug, it is serving no oher use at this moment and place.

09-04-2009, 08:34 AM	#9
jay6891 Car Knocker Join Date: May 2001 Location: jefferson,arkansas Posts: 664	Re: Is this my oil sending unit? x2, if anything its screwed into a water jacket. __________________ 68 c-10,91 sportside bed,350 .030 over,4 bolt,10-1 comp,2.05 intake/1.94 exhaust,1.6 Harland Sharp roller rockers,edelbrock rpm cam and intake w/750 carb, 700r4, 3.73 gears,Jacabbs Electronic Igntion w/Accel HEI distributer and super coil. ZR-1 roll pan, filled tailights. Blazer tank. Hidden hitch. 2 1/2" Flowmaster 40's. Parts bought but not installed>> ford 9" posi with disc. CCP front and rear lowering kit 4/5. Cab corners,foor boards,rockers, cab braces, Phatom grill, Painless wiring kit.

09-04-2009, 09:54 AM	#10
jojo printing is my trade Join Date: May 2009 Location: San Antonio, Texas Posts: 349	Re: Is this my oil sending unit? I see how that pic looks like the plug is going into the intake but its actually not.Heres a better look at it (right behind the intake): Attached Images __________________ Jojo's '70 stepside build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=344184

09-04-2009, 10:17 AM	#11
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,712	Re: Is this my oil sending unit? I disagree. It's fitted into the block. It's an oil pressure sensor. Had one on a smallblock I had. It was strangely used to control the power to my electric choke. Like a kill switch. If I had oil pressure the choke worked right. Unplugged it and the choke closed completely and car wouldn't start. All factory wiring on my new 78 Nova. Ya, I'm that old. LOL

09-04-2009, 10:49 AM	#12
jojo printing is my trade Join Date: May 2009 Location: San Antonio, Texas Posts: 349	Re: Is this my oil sending unit? Yeah JHolley was right, its for the dummy light (as the napa guy called it). I picked up a tubing kit and I'll hook it up tonight. Let's hope there's no leaks up by the gauge. __________________ Jojo's '70 stepside build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=344184

09-04-2009, 04:27 PM	#14
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Is this my oil sending unit? wow... those first two pics looked like it was in the intake.

09-04-2009, 07:09 PM	#15
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,858	Re: Is this my oil sending unit? thats where my oil pressure guage line screws into __________________ 1967custom

09-05-2009, 12:06 AM	#16
jojo printing is my trade Join Date: May 2009 Location: San Antonio, Texas Posts: 349	Re: Is this my oil sending unit? Well I almost fixed it. That kit had 2 compression fittings and I screwed up both of them at the sending unit location so there's a little leak coming out the top of the fitting. The gauge side worked and went right in. Off to find some more fittings tomorrow. Thanks for the help fellas. By the way, I was trying to see if the water temp sender was working so while the truck was running, I put the positive lead from my meter on the end of it and grounded the negative lead and got about 13 volts. So that means my temp sender is working right? __________________ Jojo's '70 stepside build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=344184

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