hello all. im posting here as sort of a last ditch effort. so ill start off with the basics...i have a 98 cx hatch with a 98 ex harness...so there has been nothing hacked up. h2b swap...everything should be electrically sound. moving on. i changed heads on my h22 to one that wasnt milled just a stock head...replaced the o-ring under the cam cap along with the little plunger dealy thing...along with the ones that go further up towards the cam gears. ive changed vtec solenoids. ohm'd out the wiring...all good. no CELs. no blown fuses...alternator and battery both charging fine. have great oil pressure. uhhhhhm. i guess thats pretty much it. everything else is working perfectly normal. im running a chipped p30 tuned on uberdata. thanks in advance ......P.S. havnt tried swapping ecus yet. but will do so today

 

yea, was gonna say to put in a stock p28, p72, or p13 and see what it does.

Also try jumping the vtec solenoid and see if it makes a clicking noise so you know 100% that the solenoid is good. I know you checked ohms, but you can never be too sure.

 

I'd try manually engaging VTEC at the solenoid itself and a different ECU

EDIT: In one weird instance, a guy brought his H22 Prelude into our shop...he had another shop "build" his motor. Well, the car ran, but it made less horsepower than a stock H22. We noticed VTEC didn't give it's usual "kick" so we looked at every possible variable that has to do with VTEC. It turns out the shaft that the (I may be using the wrong name) rocker arms (?) slide on was put in backwards on the exhaust side, so you'd have the VTEC noise, just not the pull. You might want to look into that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by denraweb &raquo;</TD></TR><TR><TD CLASS="quote">yea, was gonna say to put in a stock p28, p72, or p13 and see what it does.

Also try jumping the vtec solenoid and see if it makes a clicking noise so you know 100% that the solenoid is good. I know you checked ohms, but you can never be too sure.</TD></TR></TABLE>

i guess i should have also mentioned that...yeah i checked the solenoid with 12v still nothing; the solenoid and spool valve both seem to be in working order...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JKov240 &raquo;</TD></TR><TR><TD CLASS="quote">I'd try manually engaging VTEC at the solenoid itself and a different ECU

EDIT: In one weird instance, a guy brought his H22 Prelude into our shop...he had another shop "build" his motor. Well, the car ran, but it made less horsepower than a stock H22. We noticed VTEC didn't give it's usual "kick" so we looked at every possible variable that has to do with VTEC. It turns out the shaft that the (I may be using the wrong name) rocker arms (?) slide on was put in backwards on the exhaust side, so you'd have the VTEC noise, just not the pull. You might want to look into that.</TD></TR></TABLE>

good suggestion however i know the head has always been internally stock and none of the rockers have ever been touched...but yeah it isnt crossing over at all.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AdamB18C1EK &raquo;</TD></TR><TR><TD CLASS="quote">good suggestion however i know the head has always been internally stock and none of the rockers have ever been touched...but yeah it isnt crossing over at all. </TD></TR></TABLE>

I figured it was worth a try but since the head's never been opened up then scratch that.


So you jumped the solenoid and it IS engaging?

All connections are good (both in the engine bay and at the ECU itself)?

 

how do you know it's not crossing over? is it because you don't feel that extra "kick" (which, in reality, is actually worse for your car) when it crosses over? or is it because you can't hear it crossing over?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gsr x civic &raquo;</TD></TR><TR><TD CLASS="quote">how do you know it's not crossing over? is it because you don't feel that extra "kick" (which, in reality, is actually worse for your car) when it crosses over? or is it because you can't hear it crossing over? </TD></TR></TABLE>

hmm well the car should be making close to 190whp...and it feels like its making about 140. thats how i know its not crossing over. but in other news...just an update i took the little 10mm bolt out to check if the vtec solenoid (i think...) was getting oil pressure...anyway yeah the 10mm bolt in the front of the head. and it had 0psi at idle...helms manual said it should have 7 for a b-series......and later on this evening i took that 10mm bolt out again along with the vtec solenoid and i hooked a fitting up to my air compressor and blew 180 psi into that hole and the one at the vtec solenoid...and still nothing. oh and its not the ecu...checked that. i also hooked up a test light to the vtec solenoid and once again thats all in working order. so any help or suggestions from here on out would be greatly appreciated

 

Is the little filter on the solenoid clogged up with old oil/dirt?

The real name of it is the spool solenoid gasket or something like that, I can't remember.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AdamB18C1EK &raquo;</TD></TR><TR><TD CLASS="quote">
hmm well the car should be making close to 190whp...and it feels like its making about 140. </TD></TR></TABLE>


you do know that when you're tuned, it's not going to feel faster if you don't have a noticeable power difference from the tune. the reason for this is because the transitions are more smooth as you climb up in the rpm band.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gsr x civic &raquo;</TD></TR><TR><TD CLASS="quote">


you do know that when you're tuned, it's not going to feel faster if you don't have a noticeable power difference from the tune. the reason for this is because the transitions are more smooth as you climb up in the rpm band. </TD></TR></TABLE>

lol. thanks but yeah i can tell because the car used to spin alot more. pretty much it feels like a 15 second car is what im trying to say. and the same tune i used to be able to feel it. and now i cant. but yeah i know the crossover should be smooth but i cant hear nor feel it and im certain its not engaging. . any other ideas though ? and yeah the screens are minty fresh

 

okay let me try this. i can't remember what you checked or did not check, so let me make a little list here on things you could go over.

- oil pressure / level
- check to see if fuel filter is clogged
- check solenoids

when was this tuned? on hondata, i'm aware that one of the options for vtec engagement/disengagement is a vtec fuel pressure thing. pretty much it's a checkbox saying don't engage if vtec is low on oil. ask your tuner and ask to see if he can pull up your file and make sure it wasn't checked. cuz the oil bypass on some solenoids are just completely shot and it won't engage if they are.

keep us posted.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gsr x civic &raquo;</TD></TR><TR><TD CLASS="quote">okay let me try this. i can't remember what you checked or did not check, so let me make a little list here on things you could go over.

- oil pressure / level
- check to see if fuel filter is clogged
- check solenoids

when was this tuned? on hondata, i'm aware that one of the options for vtec engagement/disengagement is a vtec fuel pressure thing. pretty much it's a checkbox saying don't engage if vtec is low on oil. ask your tuner and ask to see if he can pull up your file and make sure it wasn't checked. cuz the oil bypass on some solenoids are just completely shot and it won't engage if they are.

keep us posted. </TD></TR></TABLE>

it was tuned in april. on uberdata. im so confused as to why its not engaging...its starting to seriously **** me off. ive also changed the solenoids. can you think of anything else ?

 

knock sensor gone bad? i'm not sure on how to identify whether it's good or not, but make sure yours is working. also, as stupid as this may sound, does your speedo work? how about your tach?

hm. i'd also double check the dizzy. do everything now so i can keep trying to help you figure it out

 

oh and i just read on how you checked the solenoid. where there any characteristics that let you know it was working? or did you just assume it was working?
i'm kinda beating around the bush because i don't want to give you the obvious characteristic because i want to see if it's actually happened with you. but let me know .

 

if the knock sensor was badit should still cross over. i have completly broken off my knock sensor and it still hit.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gsr x civic &raquo;</TD></TR><TR><TD CLASS="quote">knock sensor gone bad? i'm not sure on how to identify whether it's good or not, but make sure yours is working. also, as stupid as this may sound, does your speedo work? how about your tach?

hm. i'd also double check the dizzy. do everything now so i can keep trying to help you figure it out </TD></TR></TABLE>

knock sensor is good. swapped out today for one i know was just working fine...oh and yes knock does effect vtec because if it wasnt disabled in the tune it can put your car in limp mode...which makes vtec automatically fail...the speedo and tach both work. dizzy is also in perfect working order...im thinking something has to be clogged in the head. im to the point where now id actually take it to a machine shop and let them hot tank it or something

 

anyone else?