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yeh i drove it around the street wen i tested it, i had my foot down wen i was making sure it was powering the solenoid, and the light held right through....
wat i meant wit that last post was, with vtec not engaging due to low oil pressure, is it because the ecu detects that and doesn't send a signal, or is it because of something engine related which doesn't engage it. because the ecu is sending power to the solenoid...
nic
on a pre OBDII car, the ECU check the VTEC pressure switch ( VPS ) when VTEC engages, if the switch does not register a pressure signal, ( makes not difference what the pressure is ) the Engine Light will come on and you will not get any VTEC action.
how ever if you have oil pressure problems, your ecu might not see that, as the VTEC solenoid is open, some pressure is pressent and trigering the VPS, but not enough to engage all the cylinders.
posible causes,
relife valve,
oil pump,
sump/pickup
oil quality ( viscosity, age )
oil level,
oil filter,
VTEC solenoid strainer
oil galeries.
ok kool i gotcha!
possibilities as far as i can see then are the relief valve, oil pump or oil galleries.... the rest i have checked or changed recently..
nic
is your sump slighly convex ( the bottom of a spoon ) flat or concave could be borderline.
from memory of my look at it this morning im pretty sure its completely flat
nic
when all else has failed, ( which is probably now )
hook up an oil pressure guage to your main oil pressure outlet ( remove the pressure switch ) and check the engines oil pressure. at idle, at 3000 rpm and at 5000 rpm
yeh i think thats the go.... might go buy one in the next couple of days, best way to see whether its an oil pressure related problem i guess!
nic
how much are vtec solenoids ???
New ???
Used ???
The car needs to be doing 30kph and have 60PSI oil pressure before the VTEC will activate.