Hello guys, I got my ls1 tune today and the tuner told me I had low oil pressure at idle and low rpms it its around ~20 when I get on it creeps up to no more than 40...back then before I broke the oil sensor behind intake and replaced it with a advance auto sensor it use to sit right at 40 any help.... Also There's this knock but I. Think it's my header hitting the k member ...very tight clearance there.

Thanks,

 

have you changed the oil since. i switched to full synthetic 5w30 and my oil pressure was horrible switched back and it came back up

 

Did you change a cam recently what did you change prior to tuning? what did it make for oil pressure prior? did you just build this engine or has it been running without issue?

 

Running without issues...ls6 intake and headers then tune after he finished tune...the knock popped up I have confirmed its on the valvetrain or around that area the oil is there and it's full guessing the pump went out. Before it sat nicely at ~40 I'm running castrol 10w-30 synthetic.. Also when installing headers I took off the oil filter and was off with it fora day. Man this sucks right after my tune too

 

Looks to me you might have a bad oil pressure sensor. Try swapping it out.

Based on the design of the oil pump. Very unlikely to be bad, it really cant "Fail"

Another possible answer is you spun a bearing.

Hopefully its just a bad sensor.

 

But the knock is still an issue then if my oil is flowing...it sounds loud on top and not bottom

 

http://m.youtube.com/#/watch?v=1tqSVyNaano&desktop_uri=%2Fwatch%3Fv%3D1tqSVyNaano
Don't know if I posted right but it sounds just like in the vid...never did it before...read and it says its normal piston slap, but still at 105,xxx miles why now

Thanks for your help guys

 

A spun bearing and a knock would go together. Does the sound increase with RPM?

 

No sounds worst around 1-3 rpm but I mean the car still pulls hard (not that I'm doing it anymore) and wouldn't the hp tuners show anything

 

I'm thinking the OP sensor. Try to swap that out.

 

I will any brand you recommend I'll probably have to go to the dealer to get a good one I really hope is not a spun bearing is there anyway to tell

Thanks

 

The stock oil pressure gauge is not good. Are you going by the stock gauge? My stock gauge flickers around like crazy.Sounds like your problem is not that though.

 

Yes I got a duralast from autozone but my dash showed at 40 before and I pulled and it increase now it plays between the 20 line and creeps slowly to under 40 plus the knock after the wideband tune

 

I'm going to take off my valve covers and check my valve train...What do i exactly check for is there ways to check or if something is loose it's bad? If everything looks good i will get an ac delco OP sensor and change the oil to mobil 1 5w-20 (have castrol 10w-20 all synthetic)...if nothing i will have to pull the head for lifter check is there a special way to remove the lifter (aside from removing the head) does it just come straight out?

Thanks

 

Sounds just like that knock in that vid the sound comes off about above 2500 rpms

 

Well it's not the lifter revved it about 4000 to hear the sound and it just stopped it turn off no weird sound or anything just Pfft now evry time I try to start it it cranks for1-2sec and then stops

 

Thats weird, mine idles at 60 lol

 

Now on to something new 383 the ls1 or find a lq or. Ls2 to 6.6l I'm planning on huron ac kit. Just going ***** to the walls now I was planning on going slow step by step first turbo then fix engine then lower compression but not anymore >

 

Idles at 60 warm??? what is it cold? 75?...I guess proof there that the stock gauge sucks.

I have a brand new LS in my car. Idles warm at about 40psi, 1200-2000 RPMS, about 50 PSI, WOT about 60-70 PSI.

I have Autometer gauges and sensors.

 

We have some great boost options for your car. Give us a call and we can set you up with something great for the Huron Speed kit.