Oil pressure gauge - The 1947 - Present Chevrolet & GMC Truck Message Board Network

R@nger · 04-13-2005, 06:25 PM

I was wondering why my oil pressure gauge wasn't working so I got out my flashlight and poked my head under the dash. Amazingly the reason it's not working is because *drum roll* it's not hooked up

.

My question is, what do I need to setup it back up, and how do I set it back up?

shifty · 04-13-2005, 06:29 PM

Basically, where the electronic oil sensor was on my block, I had to get a fitting and line that would screw into the place of the electronic sensor, route that through the firewall, into the cab, then attach to the back of the gauge. It's important to use a good line and fittings and make sure there aren't any sharp edges on the firewall to split, slice or fray the line; last thing you want is hot oil spraying inside the interior of your truck

R@nger · 04-13-2005, 06:32 PM

Yeah I think I'll go with some sort of braided line.

This may be a really n00b question but where exactly is my oil sensor?

Low69CST · 04-13-2005, 09:28 PM

Quote:

Originally Posted by R@nger

Yeah I think I'll go with some sort of braided line.

This may be a really n00b question but where exactly is my oil sensor?

Are you using an original gauge? What do you get to seal up right and use a braded line? The original brass line took a funny looking fitting.

PMS · 04-13-2005, 07:31 PM

Oil senders are for lights in the dash. It is a spring contact that at a pre-set pressure will let the dash light come on. I have heard at about 5 psi but I could be wrong.

Sweet72 · 04-13-2005, 07:49 PM

Oil sending unit is just behind the intake manifold on drivers side. The orig oil pressure gauge is a direct reading instrument that taps into the same location and uses a metal line (copper I think) routed through the firewall to the gauge cluster. Some folks don't like the idea of routing the oil line into the cab nowdays.

shifty · 04-13-2005, 10:33 PM

On the inline 6 (not sure what you got), it's on the passenger's side by the starter. If you drew a line from the oil dipstick up to the #6 plug, it would rest in between. Here's a pic of my electric sensor (I replaced it) on my old engine - the pinky on that hand is pointed at the hole it goes in:

R@nger · 04-13-2005, 10:52 PM

small block 350 V8 is what I have.

I got the idea of a braided line from a couple places online...it seemed like a good idea because it would be flexible.

When I got the truck there was a thin metal tube going through my firewall...thing was it was cut on either side of the firewall. I'm thinking someone cut it and got to lazy to just pull the little piece of tube out.

Shifty is there any way I could make mine electrontic, or would that require me to get a new oil pressure gauge. At the moment the stock one is in there. Seems like a whole lot easier to just run a wire to the gauge as apposed to running a whole pipe up to it.

04-13-2005, 06:25 PM	#1
R@nger Psalm 23 Join Date: Apr 2005 Location: Utah Posts: 360	Oil pressure gauge I was wondering why my oil pressure gauge wasn't working so I got out my flashlight and poked my head under the dash. Amazingly the reason it's not working is because drum roll it's not hooked up . My question is, what do I need to setup it back up, and how do I set it back up? __________________ 71 GMC Fleetside C15(cab), 3/4 ton, 350, Holley Street Avenger 570cfm carb, TH350 trans, Leaf-springs, 2WD. "Peter are you sleeping on the job? No I have a bug in my eye and I'm trying to suffocate him." - Family Guy

04-13-2005, 06:29 PM	#2
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	Basically, where the electronic oil sensor was on my block, I had to get a fitting and line that would screw into the place of the electronic sensor, route that through the firewall, into the cab, then attach to the back of the gauge. It's important to use a good line and fittings and make sure there aren't any sharp edges on the firewall to split, slice or fray the line; last thing you want is hot oil spraying inside the interior of your truck __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

04-13-2005, 06:32 PM	#3
R@nger Psalm 23 Join Date: Apr 2005 Location: Utah Posts: 360	Yeah I think I'll go with some sort of braided line. This may be a really n00b question but where exactly is my oil sensor? __________________ 71 GMC Fleetside C15(cab), 3/4 ton, 350, Holley Street Avenger 570cfm carb, TH350 trans, Leaf-springs, 2WD. "Peter are you sleeping on the job? No I have a bug in my eye and I'm trying to suffocate him." - Family Guy

04-13-2005, 10:33 PM	#7
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	On the inline 6 (not sure what you got), it's on the passenger's side by the starter. If you drew a line from the oil dipstick up to the #6 plug, it would rest in between. Here's a pic of my electric sensor (I replaced it) on my old engine - the pinky on that hand is pointed at the hole it goes in: __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM. Last edited by shifty; 04-13-2005 at 10:34 PM.

04-13-2005, 10:52 PM	#8
R@nger Psalm 23 Join Date: Apr 2005 Location: Utah Posts: 360	small block 350 V8 is what I have. I got the idea of a braided line from a couple places online...it seemed like a good idea because it would be flexible. When I got the truck there was a thin metal tube going through my firewall...thing was it was cut on either side of the firewall. I'm thinking someone cut it and got to lazy to just pull the little piece of tube out. Shifty is there any way I could make mine electrontic, or would that require me to get a new oil pressure gauge. At the moment the stock one is in there. Seems like a whole lot easier to just run a wire to the gauge as apposed to running a whole pipe up to it. __________________ 71 GMC Fleetside C15(cab), 3/4 ton, 350, Holley Street Avenger 570cfm carb, TH350 trans, Leaf-springs, 2WD. "Peter are you sleeping on the job? No I have a bug in my eye and I'm trying to suffocate him." - Family Guy Last edited by R@nger; 04-13-2005 at 11:00 PM.

04-13-2005, 07:31 PM	#5
PMS Registered User Join Date: Aug 2004 Location: Overland Park, KS Posts: 79	Oil senders are for lights in the dash. It is a spring contact that at a pre-set pressure will let the dash light come on. I have heard at about 5 psi but I could be wrong.

04-13-2005, 07:49 PM	#6
Sweet72 Registered User Join Date: Nov 2003 Location: Alexandria, VA Posts: 1,534	Oil sending unit is just behind the intake manifold on drivers side. The orig oil pressure gauge is a direct reading instrument that taps into the same location and uses a metal line (copper I think) routed through the firewall to the gauge cluster. Some folks don't like the idea of routing the oil line into the cab nowdays. __________________ '72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.



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