about a week ago i was at the track and had a nitrous backfire when it occured my oil pressure pinned and it doesnt go back down i havnt replaced the intake manifold yet to be able to start it back up to see if it will stay pinned while its running i just thought i would ask if its normal after a badass backfire like that for the oil pressure to pin. or maybe its just stays where its at so you kno what happened when it shutdown.. or maybe its sumthing else im not sure at this point does anyone know anything about this? thanks

 

Don't see why a backfire would max out the oil pressure. Verify the pressure with a mechanical test gage.

 

you may be shorting out the oil pressure sending unit. you may have broken the wire when the back fire occured.

 

hrmm that sounds like a possibility.. the backfire was pretty bad. big fat *** flame shot out of the bottom of the car and threw the hood im waiting on the parts to arrive so i can fix it in the meantime im def gonna check that out..u dont kno where the sending unit is located on the ls1 do ya..i can look and find it but just would save sum time thanks bud

 

If I remember right, the sending unit is down near the oil filter.

 

kkk well to anyone that has this same question.. the oil pressure switch is right behind the intake manifold. and its a tall piece of plastic with metal base that screws into the block so when it backfired the backfire blew the thing back toward the firewall and broke it clean off so i didnt even notice until i went searching for wires that were randomly hanging behind the manifold. like the vaccum sensor wire. just an fyi

 

Damn! Looks like you have a strong running car...any pics or vids?