Did the vtc work before?

 

not since i've had it, only swapped it in a week ago. motor came out of a 04 tsx w/ 58000mi. The tsx rear end was totaled, so i got its heart. I'm assuming it worked before but I don't know for sure tbo.

 

my friends 04 will only let him go to 18degrees. thats weird.

 

I also should clarify that when I say it won't follow the command, I mean it stays at zero, it might fluctuate to 1 or 2 deg top but falls back to zero immediately

 

did you check the VTC filter screen? (just to the left of #1 intake runner) check oil pressure?

I found on k24a2 & k20z3 swaps running 02-04 k20a/k20a2/k20a3 engine harness - that when running a RBB vtc solenoid actual VTC "jitters" around the camcmd by about +/- 8 to 10 degrees constantly going back & forth between over the command to under. I replaced it with a PNC (stock k20a/k20a2/k20a3) vtc solenoid & the problem was solved.

what engine harness are you running? if you are running stock tsx harness that may be the problem.

when you changed the cam gear - I assume you checked the cam to make sure it wasn't clogged with sludge.

can you post up your calibration & some datalogs?

 

found someone else having the same issue running a k20z3 with (claimed to be) 02-04 harness. is it possible your k-pro is 05+ RSX k-pro & not 02-04. I'd call hondata & ask them to check

http://hondata.com/forum/viewtopic.php?p=41998&highlight=harness#41998

 

Yeah checked the cam, was clean. using an 04 type s harness, new gear is a type s, has rbc on it, and the solenoid currently is a pnc. I haven't checked the vtc screen, the one in the front of the motor right? I'll post up a cal later, on my phone now.

 

hmmm... do you have any error codes showing in K-pro? please check. also I would definitely grab the serial # from k-pro & call hondata & ask them to verify that its not a 05-06 version.

yes VTC screen is behind the small box to left of the #1 intake runner on the front of the motor.

this may sound stupid - but "Download" the map from the ECU to your laptop & make sure the VTC tables aren't all "0"...

also another one that may sound stupid is under "VTEC" in k-pro do you have a check mark next to "VTC"?

I know someone that had issues with the crank sensor. problems persisted after swapping this & trying that. turns out it was a bad clip/plug on the harness. make sure to carefully check the pins... if you can try another known working K-pro ECU and or harness it could really help

one last possible issue is maybe one or both of the cam sensors on the otherside of the head is dead or gone bad. in this case your vtc may be working but the sensor cant read it as working.

good luck - keep us posted :up:

 

I've checked for error codes, and none are present.
Checked the plug/pins and they are good.
Tried swapping harnesses with no luck.
I've loaded and unloaded the cal with all different types of cam angles just in case with no luck.
VTC is enabled I've checked it and uploaded, then unchecked it and unploaded, then rechecked it with no success.
I'll check the VTC screen, I thought that was for vtec only which engages fine, and I'll call hondata about the serial number. Also maybe I can find someone willing to let me try their ecu

 

damn sorry I don't have any better ideas

where are you located? I might be able to find another k-pro user in your area. just in case I would try your ECU in another person's car before trying the other way around. just incase something is wrong in your wiring & I would hate to see you damage someone else's k-pro

 

I ran into this twice in the past few weeks... first one was I wasn't getting a iat reading so the vtc wouldn't activate... second was a damaged ecu...switch a dif kpro and it started working

 

yeah all the sensors read fine, checked the vtc screen its clean. Gonna go over the harness again and try my ecu in a different car. Also waiting on hondata to respond about my serial number to verify its for an 02-04 :dance:

 

sorry for not responding sooner. I had the same problem, i checked everything changed the engine harnes and the solenoid, come to find out it was my kpro, the guy that had it before me had it modifird for 05-06 vtc thats why mine never worked. I sent the kpro back to hondata and they fixed the problem

 

i had this problem as well.

i changed out the vtc penis and the tct and problem was gone.

 

what is a tct

 

update to this thread: been busy lately so I hadn't messed with it, found someone local to test my kpro in their kpro'd rsx. On his car car, his kpro would rotate everything normally, my kpro wouldn't. So I know now that my Kpro is faulty. I email hondata about the issue and they asked me for the kpro daughterboard serial number and the ecu serial number, I provide it. They tell me according to their database, they didn't install that daughterboard into that particular ecu, so they cannot help me. So now I'm stuck possibly having to buy a new kpro unless I can convince hondata to fix it for me.

 

PM xenocron - he might be able to fix it :up:

 

Thanks, we should be able to help him out

 

quick update, got the ecu back yesterday, works perfectly now. Thanks again Chris

 

The bolt connecting the VTC gear and intake cam was over torque by a lot. Can this cause damage to my VTC gear?

Because I noticed lately that my cam angle and camCMD angle are off by 1-4 degrees. Usually at 50 degrees camCMD, the actual cam angle is 46 degrees. If I am at 25 degrees camCMD, the actual cam angle is 24 cam. There are times when the cam and camCMD are the same but more likely it is off.

I never look at this part of the datalog, so I do not know if it was doing this before or after the over torque bolt

 

Xenocron, whatcha do for the OP out of curiousity? Are you a Hondata dealer?

 

I am a Dealer and an Installer...i switched his KPRO from one ECU to another functioning ECU

 

had the same issue a few days ago, after swapping over a bunch of things ended up being a bad ecu..