my ls/vtec just stared to do this werid thing when i hit vtec as soon as i do i loose all oil pressure 0 none let it rev down its 75 out of vtec and 50 to 75 from 2k to 5k
25 to 15 at idle, but in vtec 0 0 0 what i always used to be consistant all the way up to 8k why is it doing this now nehelp i dont know could it be the gauge its a electric autometer ?? or ... idk help?

 

it probably is cuz its electric.. it might be getting grounded somewhere when your moving causing it to act stupid..

 

thats what i was thinking but its only vtec and its every time not like a random grounding unless the gauge is somehow reacting to the vtec electricly also my idle press seems to have gotten lower than normal?

 

try a mechanical gauge and see how it works out lol

 

will do asap! i found someone else with the same problem we bolth had this happen when we switched to synthic oil ? that should not effect the oil pump but maby it makes the sending unit of the gauge wacky? possibility???? neone else?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JayDM_lsvtec &raquo;</TD></TR><TR><TD CLASS="quote">will do asap! i found someone else with the same problem we bolth had this happen when we switched to synthic oil ? that should not effect the oil pump but maby it makes the sending unit of the gauge wacky? possibility???? neone else? </TD></TR></TABLE>

Has nothing to do with the switch to synthetic oil, I'm thinking that gauge is fucked up somehow. Go ahead and get a mechanical oil pressure gauge with a copper line, (the plastic lines suck...) and you'll get a more accurate reading.

VTEC wouldn't even engage if you had low oil pressure. 15-25 at idle is fine, I idle at around 21psi, but after hard runs or on a hot day it'll drop to around 17-18 or so.

 

well it gets good pressure just untill it goes into vtec then its 0 according to my gauge i just find it funny 2 people had the same problem after switching to synthic but if i throw in my stock oil switch and since my gauge reads 0 the light should come on right? im gonna try that tommorow with stocck switch when does that triiger the light at 10psi 5? 1 way to tell if the gauge is broke i guess only other thing is vtec is sucking all my oil up to the head and being very greedy!

 

put back stock oil switch just get the dash light for a sec on start and thats it so im guessing the gauge was bad im going to get a mechanical one today thx for the help i can sleep better now...... well alil better till i get the mechanical one and see 75 constistant

 

Mechanical gauge=20 psi at idle, 75 psi before v-tec, close to 100 psi 8K F electro gauges.

 

so we good? told you mechanical gauge is the way to go! lol