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  • #16
    Re: low oil pressure at idle

    Originally posted by Blizzard242 View Post
    Try sticking a mechanical pressure gauge in the oil pressure sensor port and compare.

    I will try and get my hands on a pressure gauge. It would go where the sending unit is correct?

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    • #17
      Re: low oil pressure at idle

      ^ Correct.
      08' L76 6.0L 4X4 Chevy EXT.Cab LTZ Vortec MAX with Snug top cover, Dynomax exhaust,Hptuners& K&N intake
      96' Camaro M5 to A4 conversion, alot of mods . GT35R Turbo full suspension. Built engine

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      • #18
        Re: low oil pressure at idle

        i still think its the unit is bad,,stick to 10 30.

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        • #19
          Re: low oil pressure at idle

          think I have a faulty sending unit? ^

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          • #20
            Re: low oil pressure at idle

            and as i said earlier the sending unit is broke or not functioning correctly....i know cause mine went out. Oil is not going to make your pressure stay way low.

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            • #21
              Re: low oil pressure at idle

              Originally posted by Rangersltw View Post
              think I have a faulty sending unit? ^
              That's what you'll be checking with a different gauge. And it'd be good to have one if you don't have anyone to borrow from.

              TEAM C6V6

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              • #22
                Re: low oil pressure at idle

                Well I havent been able to check the pressure with a mechanical gauge yet, but out of curiosity i changed the oil. I now have Mobile One Full Synthetic 10w-40. The pressure doesnt drop as low as it did with the conventional 10w-30 but it is still really low. Just an update on things.

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                • #23
                  Re: low oil pressure at idle

                  can i take the sending unit off without oil leaking all over out the hole if the engine is cold?

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                  • #24
                    Re: low oil pressure at idle

                    Well i guess im about to find out, haha.

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                    • #25
                      Re: low oil pressure at idle

                      Ok, so the 30ish psi was once the car was warmed up and at operating temperature. The 60psi was what it was when i gave it gas up to 2k rpms. What should be normal psi at idle for our cars? I am now running 10w-40 Mobile One full synthetic.
                      Attached Files

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                      • #26
                        Re: low oil pressure at idle

                        I'm not sure if this will have relevance or not. Before I did my engine swap at 180k, I noticed when I came off the freeway, the oil gauge (stock) would go between 0 and 60. Once I gave it gas, it would go 60+. I did have a rear main that was leaking. Not horrid, but still leaking. I was concerned until I could see at cruising, it seemed to be ok. I attributed it just to being a high-mileage mototr and the wear that it had from that. I did have one time that the OEM sensor failed and it was shooting a thin stream of oil as the motor ran (which I wasn't especially thrilled with) but after replacing it, well, there went the problem.

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                        • #27
                          Re: low oil pressure at idle

                          my motor only has 95k on it though. :-/

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                          • #28
                            Re: low oil pressure at idle

                            Originally posted by Rangersltw View Post
                            Ok, so the 30ish psi was once the car was warmed up and at operating temperature. The 60psi was what it was when i gave it gas up to 2k rpms. What should be normal psi at idle for our cars? I am now running 10w-40 Mobile One full synthetic.
                            I would try 20w50 syn. next time or try intense or ZZPerforance oil PSI booster to help you out. Your engine may be taking a dump slowly who knows but you can try 20W50 syn. to see what that does or the PSI boosters. It could be something blocking your oil pickup, who knows? Could be something small. if it is running good then go withit, only time I saw mine at 30 PSI last was when I ran a 10LB bottle of nitrous in about 30 min. using a 125 shot on the streets in 110 degree weather using 10W30 mobile clean 5000 oil. I remember looking at it thinking I blew something but after driving normal going home it ran fine and PSI went back up and still runs fine even after 150 shots .63 jets through it. My engine is forged though. I would just keep a eye on it and listen for noises thats about all you can do along with regular maintance and right foot control.LOL
                            08' L76 6.0L 4X4 Chevy EXT.Cab LTZ Vortec MAX with Snug top cover, Dynomax exhaust,Hptuners& K&N intake
                            96' Camaro M5 to A4 conversion, alot of mods . GT35R Turbo full suspension. Built engine

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                            • #29
                              Re: low oil pressure at idle

                              Originally posted by ssms5411 View Post
                              I would try 20w50 syn. next time or try intense or ZZPerforance oil PSI booster to help you out. Your engine may be taking a dump slowly who knows but you can try 20W50 syn. to see what that does or the PSI boosters. It could be something blocking your oil pickup, who knows? Could be something small. if it is running good then go withit, only time I saw mine at 30 PSI last was when I ran a 10LB bottle of nitrous in about 30 min. using a 125 shot on the streets in 110 degree weather using 10W30 mobile clean 5000 oil. I remember looking at it thinking I blew something but after driving normal going home it ran fine and PSI went back up and still runs fine even after 150 shots .63 jets through it. My engine is forged though. I would just keep a eye on it and listen for noises thats about all you can do along with regular maintance and right foot control.LOL
                              hah, you were just sloshing it away from the pickup with those speeds.

                              TEAM C6V6

                              Comment


                              • #30
                                Re: low oil pressure at idle

                                The PSI is about 60 at start up and then after driving it just drops according to the interior gauge all the way down to just about or on the orange line at idle. The mechanical gauge is giving me some reassurance that things might be ok and that maybe i had a faulty sending unit or something. I have a new sending unit going on probably in about 7-8 hours from now.

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