okay i have a turbo on my civic right and i heard that 15-w50 is a good oil for turbo hondas. so i did the change parked it, go to drive it tonight and the oil light flickers on and off.

so i change the sending unit, change oil back to 5-w30, and it doesnt come on at an idle or when im driving.

but if i just barely give it a slight pop on the throttle(SAFC says like 2%) real quick, the rpms drop to like 600, and the oil light blinks but goes back off when the rpms go back to normal idle.

is this just like an almost stalling thing, and the oil pressure just gets low at that rpm??

what is normal idle oil psi? my book says 10@idle 50@3000??

i hooked up a gauge and @ idle i make 16psi.

when i pop the gas its just barely like an 1/8 of an inch, is my car just going thru stalling procedures or am i screwed, the motor only has like 2000 miles since it was built up.



it never comes on at any time, i have no noise from my motor other than normal.

is it because of the turbo in the exhaust that my car drops at an idle when i get touchy with thte gas?

 

my car only idles at 78-805 rpms, is this too low

 

Well, what is the specified Idle for your car? Your idle speed should remain the same regardless of the induction type. sometimes, idles tend to drop down when they are running rich.. If you have Mediocre fuel managment, you could be loading up at idle and have a lumply/lower than normal idle speed. i see it all the tiem on DSM"s w/ a vented BOV... ive had it happen to me, so i know the symptoms.

how lean are you at idle?

a good rule of thumb is 10 psi of oil pressure for every 1000 rpm, i think if you are running at least the 10psi @ idle, it should be ok... the thicker oil is gonna increase your pressure. you probalby shouldnt deviate too far from the OEM's recommended oil weight. So if it calls for 5w-30, you should probably use that. the fact that you have more oiling orifices would account for a slightly lower oil pressure given the same weight oil as before.

 

thanks bro, i believe the normal idle is like 850, but mine is slightly lower than that. i am running just above stoich, a few bars into the rich side. i have noticed that after about 15 minutes of driving i push in the clutch and let the rpms fall, and it will dip real low (550-600) and thats when the oillight will flicker, as if it were about to stall and it was triggering the oil light. but if i take the rpms up by like 50-100, the light goes out. i have changed the sending unit, and i need to re-thread tape it, cause i have a slight leak arounf the fitting.

also, while running, since i have a bad BOV diaphragm my BOV is half way open, could this cause my car to idle weird, as in low? i have a new one on the way here now.

 

well im quite sure honda's will enver use a MAF based metering system, so a leaky or vented BOV will not affect your A/F ratios when decelerating, idling or shifting.

See, i think the Oil pressure sending system also incorporates an Hobb's switch to trigger an idiot light when the oil pressure drops down too low. and i think that honda has designed their system to be pretty sensative so that if oil pressure drops down below the specified pressure @ 800-850 RPM idle speed, it triggers the light... so, if the spec is 10psi @ 800-850rpm and your idle dips down to 600 and then the oil pump rpm also dips down, its very likely that your oil pressure will also drop down LOWER than the 10psi at the factory set 800-850rpm... if it drops down low enough, that the oil pump output comes down low enough, it may set off that warning light...

if youare on the rich side of stoich at Idle, try leaning it out to a few ticks on the lean side, your idle should come up a little, and not bog down... if it stops bogging down, theres a good chance itll fix your oil light problem

 

thanks bro, on my gauge at an idle i mad 10-12psi, at 2100 i made 35psi. and i max out the gauge ay 72-75 at WOT. evry now and then when my motor had been running for like 20-30 minutes it will go to 9 psi. should i run 15w-50. right now im running stock 5W30

 

guys thanks for the info, i switched to the mobile 1 synthetic 15w-50, and it hasnt come on in 2 hours of good driving and idling. my all motor friends said this would blow up my motor cause it was too thick for honda rod bearing clearance. all i know is my pressure went up, and my light is off and i have a full pan of oil. any suggestions are much appreciated.