I have a boosted 01 accord f23(i4) 5 speed. Recently i have been throwing a code for vtec issues p1259. Since im boosted i think that the oil feed line is causing me to lose oil pressure at the sensor. From what ive read vtec works off of the oil pressure sensor to engage. So im wondering if there is a way to bypass the sensor. My oil level is upto par so i know the code isnt being thrown due to low oil. Havent pulled the solenoid yet to see if its clogged(will do tomorrow). Also Im not running an oil pressure gauge so i have no idea what the oil pressure is at the sensor. Any help or advise would be greatly appreciated


ps my oil feed line is not restricted because its a journal bearing turbo so that maybe the cause of not enough pressure to allow vtec to engage

 

I hope your not running the same oil pressure source for both vtec and feed line..

Oil pressure gauge is pretty cheap, id recommend using one.

http://prosportgauges.com/Clear-Lens...ge-52mm-1.aspx

 

its off the back of the engine block where the oil pressure sensor is and i was thinking about picking one up since they are cheap

figure 9 on the link shows where it is even though this is for a d series
http://turboneticsinc.com/forum/turb...civinstall.pdf

 

horrible way to do it... the pressure sender has been know to snap off when run like that...
you need to remote mount it or buy a sandwich plate and run the oil feed from there.

you cannot bypass the sensor... that's the failsafe if you have some sort of oil pressure issue it disengages vtec to prevent damage. If the ecu doesnt see that sensor it won't engage vtev since it doesn't know if the minimum pressure requirement has been met to engage the vtec solenoid.

The turbo feed line should not be causing vtec issues, unless you have some stupidly large diameter feed line that's longer than it needs to be. Take the vtec sensor off and make sure the screen is clean, if its clogged that can cause engagement issues, or your sensor could be going bad

 

i dont think its oil since it should pop up with vtec oil pressure low, unless you disable the switch.
Check the soleniod and see if that works. then check the wires

 

did the solenoid test it all checked out so im pulling the whole solenoid off to see if its clogged

 

are you getting any other codes? oil pressure is not the only thing required for the vtec solenoid to activate. speedo, knock sensor, ect. you can bypass the oil pressure switch but i wouldnt suggest it if your on the stock ecu.

 

okkay sorry for the no updates but i pulled the solenoid. filter was pretty clogged(due to little metal shavings from when i cut the hole in the oil pan, didnt clean it out to well i gues). so i cleaned put everything back on. Cleared the code and for two weeks havent had the issue