Wierd Vtec

[[[d a n n y]]]

Got a problem here..
vtec's been acting wierd it cuts out and engages some time doesnt engage at all, some times it's on full song..
now the funny thing is when it doesnt engage, engine light comes on and it throws the error code 21 Vtec soloniod spool valve
so far i have checked and cleaned the soloniod. cleaned the pressure switch still no luck what do u think it is ?
should i replace the whole solonoid??
any input would be appreciated

[JasonGilholme]

Hows your oil lookin??

I'm not sure but i think its a mechanical thing, not electrical. Probly wrong tho. :P

[todaek9]

sound like solonoid...Solonoid is a wear and tare thing..so yea..but try using a test pen to see any current going thru..

[ECU-MAN]

whats your oil pressure like

[[[d a n n y]]]

dont have a guage mate..
should i get 1 and test it??

[ECU-MAN]

yeah see if you can borrow one.

take the oil presssure from the back of the block where the oil press switch is.

do a test at idle, 3000 rpm, and 5000 rpm. in N

the needle of the oil pressure guage should not pulsate to much

[CRXer]

I didnt think the ecu could register an oil pressure prob through monitoring the solenoid? I could be wrong

Have you got any mods like vafc,piggyback or had them previously?

Is it a engine swap or stock?

[destrukshn]

it's a swap if i remember correctly.

[CRXer]

If a swap,def check joints in solenoid wire for poor connections,sounds like an intermittent connection somewhere.

I got the same prob,my harness previously had a vafc & after it was taken out they used a shitty bullet connector to rejoin the wire.
Now everytime the gf braces herself in "certain situations":zip: off the fire wall with her feet,this connector gets pulled apart,hence no vtec.
If only i wasnt so lazy to simply join one wire together properly........

If all good go back to the oil pressure test.

[bennjamin]

knowing the craftsmanship of this "swap" - there is alot of margin for error :) Re check all the wires as said Danny son ! Check ur oil pick up for crud in it. (take off oil pan and clean it) Oil pump might be on the way out too ?
Time for valve lash adjust ?

[ECU-MAN]

hay Danny

code 41 is Primary oxygen sensor heater


are you sure you ment code 41 or did you mean code 21 ???

[SKREMN]

i had the same prblem but no error codes and it was my oil pressure dropping just under now fixed and works gr8

[kraftycuts]

dump the engine ... and put in your forged one already!

[[[d a n n y]]]

dump the engine ... and put in your forged one already!

doesnt solve the problem..
all wires are connected properly..
all checked only thing i can guess is the oil pressure
will check it out..

[Limbo]

if solinod is faulty the engine light will come on. If you pressure is low the light will not come on.

I was having oil pressure problems cos the mechanic fixing my car put smaller nipples linking the hose causing it to have less oil pressure. But the light never came on. Then Hanny's actually diagnoised it for me ;)

See if you can borrow a solinod to test it, and no you can't borrow mine ;P

[bennjamin]

have u swapped a known good workign solonoid yet Danny ? U can borrow mine for a quick street run...

[[[d a n n y]]]

hm..i have 1 coming in
but yes ben i can i woudln take your offer :D
when can i?

[[[d a n n y]]]

this is really funny VTEC works fine now..wtf?