I searched and looked throughout all 32 pages but haven't found any resolution. I just finished swapping in a 1st gen B16a into a 1990 Integra, and Vtec won't engage. I've checked everything. I checked all my wirings by disconnecting each Vtec pin from the ECU, and the check engine light comes on so everything works. Also ohm tested everything and everything's within specs. Replaced the Vtec solenoid, bypassed the Vtec oil pressure switch, nothing is working. The only thing I think it may be now is the ECU...but I don't know anyone local with a PR3 ECU for any testing. What do you guys think? Help me out!

 

Tune up? (Oil change, etc...)

i hope these can help you
https://honda-tech.com/zerothread?id=164863

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92 DA B16a &raquo;</TD></TR><TR><TD CLASS="quote">Tune up? (Oil change, etc...)

i hope these can help you
https://honda-tech.com/zerothread?id=164863</TD></TR></TABLE>

Thanks for the thread bro, I've already checked everything that was listed. It's a JDM motor, so it's still faily new with low miles. When I put it in I basically did a full tune-up, new oil/oil filter, radiator fluid, etc. There's plenty of oil, so it's got nothing to do with oil problems. I'm thinking it's the ECU, but we'll see.

 

Good Luck

 

if you give the vtec solenoid power does it click?

 

Yes it does click. It's brand new, replaced the old one so the Vtec solenoid works.

 

does your speedometer work? is your speedo sensor is bad vtec wont work. your MPH is one of the things needed to activate vtec.

 

what ecu are you running right now ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MassScene &raquo;</TD></TR><TR><TD CLASS="quote">does your speedometer work? is your speedo sensor is bad vtec wont work. your MPH is one of the things needed to activate vtec.</TD></TR></TABLE>

Check this!!! It can cause a lot of problems.

 

Do you have your stock speedometer and your stock ecu?