Oil pressure good? Clean the screen too.

 

I will check that. Good call. My oil filter relocation kit leaks slightly, that may be the problem.

 

Both of these are good(oil pressure and vtc screen), all of the sensors check out per manual, the vtc gear is not stuck. I am not sure where to look from here???

 

You check the VTC sensor plug pins/ ponytail? The VTC accuator is a pretty stout piece so it's hard for me to think it's the problem. That leaves an electrical bug. Damn.

 

Yup... And the supposed "wiring gurus" (locally) said it was mechanical.... :down: But it worked last time we tuned it and have never had this issue before.... HMMMMMMM Makes you think...

 

What ECU are you useing, and what base calibration?

Do you have OBDII disabled?

It sounds almost like the ECU is performing the readiness test for cam cmnd, LOL.

BUT
For the VTC gear to advance it must counter the rotational forces of the cam and the only way that can happen is if oil pressure is sent thru the VTC solenoid. So either the VTC solenoid is damaged and allowing full pressure when activated or their is a errant signal from the ECU to force full travel.

Is your build a full 50 degree advance safe?

 

It is a stock CRV with ARP head studs. I did not think they came with the 50deg vtc.. (25?? like the accords, etc)

Setup is as follows.

08 Element(CAN BUS like the newer si's)
Kpro dual ecu setup with PRB kpro
Boomlang dual ecu harness rewired by a local tuner shop(don't ask the name, I am not trying to start an internet war)
Stock CRV block head to toe sans ARP headstuds
Vband 3076R turbo kit with fmic

The changes since the last tune are:
cable TB(was running dbw tb thru factory ecu)
new turbo manifold and downpipe(obviousluy not why)
oil filter relocation for the new manifold(oil pressure checks out)
boost by gear w/ lo/hi switch
speedo hooked back up(factory speed limiter is thru dbw TB, so we had to unhook it)
IACV wired in(having lots of idle issues and running pig rich at idle)

I was under the impression that the CRV motor was 50 deg VTC safe, correct? That is the general consensus correct(stock cams of course)

Not sure where to look from here...???

 

You should have no issues with 50deg cam advance.

Have you tried another VTC solenoid? Something is allowing the oil pressure to advance the VTC gear too far. You need to eliminate all the components one by one.

 

Even if they all check out with the procedures in the FSM? Everything has the proper resistance, etc. and nothing is sticking...

 

I thought there was no way for the VTC to go past 50? It shows 51 and then shuts off the car.

 

The spool valve, or the oil control valve?

Is it number 4 or 7 in the link?

http://www.hondaautomotiveparts.com...tcgry2=2003&catcgry3=5DR+EX+(4WD)&catcgry4=KA5MT&catcgry5=VTC+OIL+CONTROL+VALVE

 

Not the spool valve, but #7, the VTC oil control valve.

The VTC gear assembly could allow 51 degrees, or the sensor could be off slightly, or their could be enough clearance between the parts and electronics to get to 51

 

Ok, thanks!

And no, I have not tried another oil control valve. That will be my next step...

 

"Unspoken shop" did not have the VTC- hooked up AT all to the ecu. Ran a wire and voila!!!!

Made 389 at the wheels at T1 in Dallas.:up:

 

Glad ya got her running!

 

Glad to hear it !! You been workin' very hard on this unique swap mostly in uncharted territory. Double great news ! Who found the solution, you or the shoppe? :up::up:

 

T1 Tony...:up::up:

(not the original unspoken shop)

Once I get the rats nest of wires fixed and the charge piping recoated, I will FINALLY make a thread on here as I feel it is finally getting close to worthy..