seedlesseg4

Hi guys got my 92 eg hatchback with usdm d15b recently slapped on a z6 head and noticed vtec has not been engaging I wired up the solenoid in the proper pins (d6 and a4) grounded the other leg to the ther most at housing. I'm using a virgin p28 right now and am not getting any crossover what so ever at 5500rpms I applied power to the solenoid and am getting a click so I know the solenoid is good. I also tried my ecu in a full z6 coupe and vtec operated properly so I know the ecu is good. Could it be the pressure sensor on the solenoid? Any other input is appreciated

HondaPartsHero

Did you remove the oil jet on the D15 block? Any codes? What does it rev to?

JDMequalslife

^^^^^what he said if you didnt remove it vtec will not engage.

seedlesseg4

Yeah @hondapartshero I removed the jet from the block between cyl 2&3 when I did the head swap it revs up to just about 7200 and I get a intermittent code when running the car but it's a code 1 or code 43 basically for the o2 so nothing for the vtec

seedlesseg4

Bump! Oil level is perfect and coolant temp sensors are working

grumblemarc

iTrader: (4)

If you can rev this high and not throw a code then VTEC is working.

Former User

Perplexed by OP's priorities. Why focus on VTEC when 2 codes are thrown? Fix the codes and then worry about VTEC.

seedlesseg4

I can rev this high but I know the vtec is not engaging, because the ccode are not consistent I only throw the code if I run my car WOT for at least 1st through 4th and once I turn the car off their gone the codes stay in the ecu but I know if it was something bad they cel would stay on and I know that it is my o2 at fault that is why I worry about the vtec

tony_2018

Have you tried hooking up an led to the out put of the ecu to see if its sending a signal to the solenoid? Have you check the solenoid to see if its functioning?

Former User

Absolutely Wrong. The codes are thrown because there IS a problem. Fix the problem, and then worry about VTEC.

grumblemarc

iTrader: (4)

I repeat; if you can rev that high and NOT throw a code for VTEC then VTEC is working. Fix your other problems.