2002 Accord 2.3L ULEV VTEC w/ PO112 code (IAT) and P1259 VTEC Malfunction

[bocas0225]

XCI..... I noticed something kind of odd to be honest with you. I have noticed that once my oil pressure builds up and the engine gets warm enough then my VTEC sensor stops working. I am curious as to if my oil pressure switch is bad. I do notice that I have a leak on my rear main seal right now so I am going to be replacing that along with my clutch.

What do you think about this issue XCI??

 

[xci.ed6]

it can drop when it gets hot, since the oil is thinner, not very common though.

I think you can check pressure at the sensor, so see if that's where your pressure is bad.

 

[bocas0225]

it can drop when it gets hot, since the oil is thinner, not very common though.

I think you can check pressure at the sensor, so see if that's where your pressure is bad.

Yeah Im wondering if running a 5w-20 weight could have something to do with it?? I am going to be an engine flush this weekend and changing to syntheic Blend and am going to start running 10w-40 weight oil. I am wondering if that will help make a difference.