2G Low Oil pressure

[talon2gbuyer]

Hey all, at idle I will have low oil pressure. I can see on the stock cluster gauge that the needle goes below the operating line (1st line up from the bottom) by about 1/4 of an inch. Then when I accelerate the pressure moves into the normal range. Is this indicative of an oil leak? also, would the turbo oil return line leakage (drips) be causing a drop in oil pressure? Thanks!

 

[TSITurbo95]

The stock gauge is useless. Get an aftermarket unit to actually determine oil pressure.

 

[talon2gbuyer]

good point. I'll look into getting an aftermarket oil pressure gauge then.

 

[JayB12]

Check your oil level, low oil = low pressure. A leak at the drain will not cause low oil pressure directly because it isn't a pressurized line, but it can make you low on oil. Also, as stated stock pressure gauge isn't super accurate.

 

[talon2gbuyer]

Just did an oil change on it early last week and its still at the norm markings. I dont see any leakage at all from around the block, as ive checked to see if maybe a gasket is going bad (which would suck because the motor was just installed in march! )

 

[DSM1G90]

Stock gauges only show presence of oil pressure not actual PSI. If you take the oil cap off during idle and see oil swirling around in the top of the head, you've got good pressure.

Does the pressure read when oil is cold then falls when hot? Your crank bearings are tired and can't keep the pressure up in the galleys. Time for a bottom end rebuild.

 

[talon2gbuyer]

ugh.. as a DD not sure if i can allow the downtime for a bottom end rebuild

 

[talon2gbuyer]

The engine was just installed in march of this year, supposedly rebuilt. Not sure how it needs a tear down already?

 

[GRAVEDIGGER]

Just get an aftermarket guage and call it a day. That sounds like normal operation for a stock guage. They are just not that reliable. But, the oil will read much lower at hot idle than it will once you start to get the rpms up more, even with an aftermarket guage.

http://www.dsmtuners.com/forums/new...gauge-sensor-questions-merged-oil-sender.html

http://www.dsmtuners.com/forums/mai...-low-oil-pressure-hot-idle.html#post152581776

 

[jrohner]

If I'm correctly understanding your description of where the needle is on the gauge, your oil pressure is normal.

 

[2GbTalonGuy]

What causes that is *usually* the sending unit. My GF's Talon has the same problem. Rockauto has the sender for $40 and some cheaper ones for around $15. If you don't want to spend the $100 for a gauge just yet, throw a new sender in and see if the gauge still does that.

 

[GRAVEDIGGER]

Rockauto has the sender for $40 and some cheaper ones for around $15. If you don't want to spend the $100 for a gauge just yet, throw a new sender in and see if the gauge still does that.

New guage and sending unit isn't that much more. Here's the one I have.

Auto Meter 4327 - Auto Meter Ultra-Lite Analog Gauges - Overview - SummitRacing.com

 

[2GbTalonGuy]

Yeah, I would personally just get the aftermarket gauge. They do come with a sender. But you know how cheap some people can be.

 

[talon2gbuyer]

Im looking into getting a new oil pressure gauge and coupling it with a new sender, also getting water temp and the AEM UEGO 6 in 1 wideband kit. Should solve quite a few issue

Not trying to be cheap, basically just want to know what i'm getting and what I need before I buy anything

 

[WES_393]

Whatever you do, don't buy a UEGO. If you ever plan to run DSMLink it will give you a massive headache. Go for the Innovate widebands. LC1 or MTXL, either one is better.

 

[talon2gbuyer]

actually DSMlink is my next step after my trans replacement . Ok, so ill look into the innovative widebands then. thanks for the heads up

 

[DSM1G90]

Even if you go that route with aftermarket gauge, still keep an eye on the pressure - from cold oil to hot oil. There shouldn't be too much variance in pressure between the two temp conditions.

If the connecting rod bearings are definitely tired and letting oil pressure slide by them, it could start doing some damage since you do have metal to metal contact there for a short time until some pressure is built up.