924doorEG

okay...so i have no vtec when my car is at normal operating temp.....but i do when its cold....honestly i dont know why.....but the shop that i go to has narrowed it down thinking that its eaither a oil pressure sending unit.....or a leak in my rocker arms not allowing the oil to get to the vtec sylinoid.....would eaither of those cause no vtec when warm but vtec when cold? im sooo confused please help me on this.....

b7/y8 mini me

Hello Bart

I have never heard of that in the 11 years of working on honda's... do you have an AFC or vtec controller... I would think maybe an oil pressure sensor or coolant temp senser to the ecu.... if you have any extra's it doesn't hurt to try switching them....

gizzerhatch

thats strange....
but you shouldnt be reving the engine that high if its not at operating temp.

924doorEG

well i know that but i did have to confirm it a couple times lol but oil pressure sensor thats above the oil filter right? i have a feeling that might be bad or possibly the leak in the rockers idk....but i dont have an extra oil pressure sensor and i have the vafc and everythings zero'd out except vtec engagment

Hello Bart

I was thinking maybe your afc wasn't working properly... and I was refering to vtec pressure switch... the other is for the gauge.. And your temp sensor could be messed up... the one the ecu reads from... over by your distributor... the 2 pin one... doing opposite... I would change the easy stuff first... it kinda doesn't sound like oil pressure problems tho... I would change that coolant sensor first personally...

trustdestruction

when you did the mini-me did you pull the oil jet out of the block? you were suppose to

924doorEG

yessir i did....and if i didnt i wouldnt have vtec when its cold.....i'll try the temp sensor....thanks guys