check engine light comes on sometimes when i hit v-tec

[OMG.JAI xD]

vtec solenoid.
right next to the dizzy on the gearbox side of the engine.
gold coloured cylindrical shaped device with a couple of wires coming out of it.
part of the head.
to be more detailed. its on the exhaust side of the head, hence why i said right next to the dizzy. since the dizzy runs off the intake side.
=]
(dw i didnt know what it looked like either. i mean. who cares. all you need is the boooBAAAAA =] )

[diffuzn]

there are pics of what the solenoid looks like in diy threads about creating vtec lights etc

[02gzm]

[johnny5]

btw, it was a bitch finding the switch as mine is the audm and the picture shown was a usdm honda. lol, my housemate who knows shit about cars was the one who pointed it out to me and finally found it! IT IS LOCATED ON THE PASSENGER'S SIDE AT THE DOOR for those of you who may have the same problem locating it. LOL!

i just checked it out. ENGINE CODE 3. map sensor. also, i have a vafc which the vtec has been set to kick in at 6000 not the standard 5500. is this the problem? have i finally solved the problem??!?? do i need to retune it? reset it? if yes how? i checked the vtec solenoid and everything seems to be connected properly. whats the next step??!??

[Phuong1987]

Are you sure its 3 or 21?

Double check it buddy,
http://www.ozhonda.com/forum/showthread.php?t=67230
http://www.ozhonda.com/forum/showthread.php?t=68997

[02gzm]

I think you may be confused.

As phuong1987 pointed out,
Here's what code 3 (MAP) looks like - 3 fast


And here's what code 21 (VTS) looks like - 2 slow, 1 fast

When the VTS is energised by the ECU it allows pressurised oil to pass ( via a valve and filter ) to the valve train locking pins that engage VTEC. The ECU monitors the VTS to ensure it is there and connected.

Like i said earlier it's a oil pressure problem. What type of oil is being used? The leak you have is contributing to the problem but you may have another oil pressure problem somewhere too.

[johnny5]

I think you may be confused.

As phuong1987 pointed out,
Here's what code 3 (MAP) looks like - 3 fast


And here's what code 21 (VTS) looks like - 2 slow, 1 fast




Like i said earlier it's a oil pressure problem. What type of oil is being used? The leak you have is contributing to the problem but you may have another oil pressure problem somewhere too.

its the map sensor. definitely a code 3. i'm using semi-synthetic oil at the moment. should be changing it to full synthetic soon. i'll be changing my exhaust system soon and getting another mechanic to take a closer look at the problem. would the vafc have anything to do with it?

[Phuong1987]

If your really sure that its the map sensor, get a new 1 and test it out or go to the wreckers and get one, most honda motor uses the same map sensor

[02gzm]

It may sound odd but clean the terminals of your dizzy. My car tripped the MAP sensor code a few times with my old leads that kept coming loose. And vtec = high rpm, so it could be a slight miss in the ignition that causes it to not spark occasionally.

[johnny5]

changed the map sensor over the weekend. tested the car a few times and CEL DOES NOT come on anymore *fingers crossed*

THANKS FOR ALL YOUR HELP GUYS!