I just picked myself up a oil pressure gauge and im wanting to install it.
Ive read on the cobalt forums that you can just remove the stock sender and replace with the aftermarket sender and leave the oem oil plug unplugged and will not cause any issues?
Not sure if that's the case with our cars or not.
Ive read that when cold our oil pressure is around 100psi when using these higher pressure ports. Since my gauge only goes up to 100psi, it could damage the gauge if its over 100 psi in the long term.
Is there any issue other then lower readings when using the side of the head port? I know the pressures are lower but they are still accurate correct?
If so which plug do I use?
I used the side port.And the readings were low once warm,But some say that if you are showing oil pressure that its all good..
But if and when i do it again I will use the stock location,but make a T fitting to keep the stock one inline,Because if I rember if its left unpluged the oil light will stay on,But I could be wrong..
Yah common sense would dictate that the light would come on....just some of the cobalt guys have said it doesn't.
I like the stock location alot more as well but the pegged gauge is not a great thing for them.
I dont think low oil pressure would be a huge deal as long as it stays normal....if it changes then you know you have an issue.
I think my old 2200 was about 10psi when warm.
I also read a story about a guy that did the t fitting and it ended up breaking off on him and shooting out all his oil. So that's a slight concern.
my 2.4 showed 2 psi when warm with .25 too big bearings... and i had a mac gauge plugged in the exhaust cam tower so showing oil pressure doesn't mean you are in the clear
No ....obviously 2 psi wouldn't be right..
I think we are not understanding eachother..
Saying..... if normally you have 15psi when warm and then one day your sitting at 5 psi then there is an issue. A change in pressures....not just having pressure in general. No matter where you get your pressures from they are going to be the pressure for that point of the motor not the motor as a whole.
Somewhere on here I did a write up on all the pressure readings at all the various places you can tap off of for oil pressures on the Ecotec. I personally have two oil gauges, one at the exhaust cam port pre turbo (My pressures will be slightly less because of the turbo) and one at the balance shaft port on the front of the engine. The head readings will vary drastically with engine oil temperatures. The Block ports will have slightly less change with temperature but they too will lower with higher temperatures. At the block I see anywhere from 60-100psi depending on ambient temps and engine temps (right now in the cold its between 75-100). In the cold at the head I see between 20-80 psi (has a wider range than the block in reference to RPM. Also after its warmed up I will be between 20-30 psi at the head in the winter. In the summer it's between 5-20 after warmup. These are extreme variations too since it can get very cold here in the desert and then very hot. Right at the pump you will see around 120psi.
I have monitored these pressures for years now so I can literally tell you the pressures at any of the ports in any temp so feel free to ask.
head in the winter (20-30psi wamed up)
Head in the winter (60-80psi cold start)
Block in the winter (75-100+psi warmed up, also note the block pressures are more steady throughout RPM)
Block in the winter (75-100+psi cold start)
Head in the summer (5-20psi warmed up)
Head in the summer (50-70 psi cold start)
Just remember these ranges are all RPM and temperature related.
ASE Master Certified Automotive Technician
On a Eco I would use the block readings only.
Unplugging the stock sender will not cause a light or any bad affects.
FU Tuning
Addicted to meth wrote:On a Eco I would use the block readings only.
Unplugging the stock sender will not cause a light or any bad affects.
Agreed. I really only use the head pressures as a green light for me to really get on it once the pressures come down for the turbo seals protection.
ASE Master Certified Automotive Technician
I just used the stock location and removed the stock sender
"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my ride." -Amen
sounds like ill be doing the same once I get the adapter....
Whats the part # for it??
Autometer p/n I believe is 2278
ASE Master Certified Automotive Technician
I cant remember the p/n BUT what I did was take both senders to the parts store and got the adapter as the p/n that was on here was not really needed
"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my ride." -Amen
Cant do that if you only got one ride
The autometer adapter was the only adapter I know of and I shopped at a place that makes fittings, called metrics unlimited.
To be clear, if you remove the stock sender from the block and un plug it from the electrical connector you will not have an oil light. Since it completes the circuit if it lacks oil pressure.
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Leafy, have you tried this? When I had my 95 engine with the megasquirt, I disconnected the oil pressure sender and the car wouldn't start as it was tied into the fuel pump relay... I say just use the port in the head, which is what i am doing and leave the stock sender alone.
jason norwood wrote:Leafy, have you tried this? When I had my 95 engine with the megasquirt, I disconnected the oil pressure sender and the car wouldn't start as it was tied into the fuel pump relay... I say just use the port in the head, which is what i am doing and leave the stock sender alone.
No I should have been more clear myself I was trying to get a clarification, sobering up now it makes less sense that way. But that is the only thing that makes sense. Because if you unscrew the sensor it WILL leave the light on, for certain.
On your car that doesnt make sense, when the car is off the sensor is also reading zero pressure.
1994 Saturn SL2 Home Coming Edition: backup car
2002 Chevy Cavalier LS Sport Coupe: In a Junk Yard
1995 Mazda Miata R-package Class=STR
Sponsored by:
Kronos Performance
WPI Class of '12 Mechanical Engineering
WPI SAE Risk and Sustainability Management Officer
disconnecting the stock oil pressure sending on a 96+ J WILL NOT turn the oil light on.
FU Tuning
Ill do it one of these days when im not lazy...... might just do the head after thinking im not wanting to lay in the mud.
Remember the oil light is a dummy light anyway, if you have so low of oil pressure it comes on, odds are your f-ed or close to it.
I know for a fact an L61 can die of oil starvation long before the light comes on. My buddies mom ran her 4 door 04 dry and toasted the engine at 64,000 miles, no oil light at all.
The things are practically useless, no real need for them.
Just something to think about, I have everything to add my Oil pressure gauge to the stock sender location at home, I will not boost my car until after it is installed, no matter where you source it having an actual pressure indicator other than the dummy light is better safe than sorry.
I'll just unplug my stock sender and let it hang.
Addicted to meth wrote:disconnecting the stock oil pressure sending on a 96+ J WILL NOT turn the oil light on.
What the hell is the stock Oil pressure sensor used for, then?
Must be a Normally closed switch. It sees pressure it opens the circuit.
Edited 1 time(s). Last edited Tuesday, January 03, 2012 6:23 AM
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-MD- Enforcer wrote:Addicted to meth wrote:disconnecting the stock oil pressure sending on a 96+ J WILL NOT turn the oil light on.
What the hell is the stock Oil pressure sensor used for, then?
Must be a Normally closed switch. It sees pressure it opens the circuit.
It is used for the dummy light on the dash.
FU Tuning
Got rid of my manual when I sold the 95 engine. If you look in the gm manual you can see that in 95 it shuts the fuel off.
jason norwood wrote:Got rid of my manual when I sold the 95 engine. If you look in the gm manual you can see that in 95 it shuts the fuel off.
I can't say for 95.
97+ i can say it does not.
FU Tuning
