Trying to find out what wiring issues (if any) I may run into when I swap in my H22A4 for the H23A1. I want to stay OBD-1..that much is certain, but is the H23 wiring ready to plug/play with VTEC? Or will I have to get an OBD-1 VTEC wiring harness to be able to use the P13 or P28 to engage VTEC?

Any help?

 

you shoud search, that is what you should do.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">you shoud search, that is what you should do.....</TD></TR></TABLE>

true, but remember that vtec is just 3 wires. would you rather buy a whole new harness, or just run 3 wires?

 

this is a good example of what you would find out if you searched....im not saying to buy a whole harness....

edit:
to the thread creator....you will need to do more to get this to work than you think.....

the h23 in your car right now has the cyp and tdc sensors in the distributor....your h22a4 has them at the oil pump gear...

search to figure out what to do....

vtec wiring is probably the #1 covered write up ever in history on h-t....

search.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">search to figure out what to do.... vtec wiring is probably the #1 covered write up ever in history on h-t.... search.....</TD></TR></TABLE>


...Just not on the H23...

Still looking, but no actual directions (yet...) just that there are extra wires.

 

they aren't much different. if it were me, I would have some wire, soldering gun, and a list of pinouts for your ecu + cel codes list. That's all you will need. Hook up the harness the way it was wired to the h23, run vtec wires, and give it a shot. If something isn't right you will get a cel, pull the code and check the pinouts. Its easier than you think.

 

Thanks for the vote of confidence...Am going to check the fuse box to see if it is pre-wired for VTEC , and if not, then I have the write up for the three wires and how/where to attach. I already have the solenoid on the head, so when I get the ECU I will try to connect before I swap so that I can just plug the rest of the H23 harness in like normal. Then I can just run the other end through the cabin to the connection on the solenoid.

 

you are searching for the wrong thing, search for vtec wiring, its not specific to the car, the ecu, the engine going in, or the engine harness being used....there are three wires....

search for "How to wire vtec"

one of the first results:

https://honda-tech.com/zerothread?id=919292

search, read....

 

That was one of the results I DID NOT FIND.....




found SKDRCR's write up though....

 

wow.....Sorry you have gotten "SEARCH" as a reply from everyone. Let me see if I can point you in the right direction.

(I have lots of experience with the H22A[JDM] and the H23-&gt;VTEC swap, HOWEVER I am not sure of the differences with the H22A4. I'd urge you to go with a JDM H22A instead of the A4 model.)

Ok, here's your wires:

Your new ECU(P13) is plug and play, and the VTEC stuff is already under the hood.

--VTEC Soleniod: This is a Green/Yellow wire. It will be on the passenger front strut tower by itself, and it terminates at a gray colored dummy plug. Just extend this to your new VTEC soleniod. The male plug it terminates at is the correct plug for the VTEC soleniod, so you can leave yourself an inch of wire on the plug, entend it(solder), and it plugs right in.
--VTEC Oil pressure switch: Light Blue wire- this wire can be found in the engine harness socket (gray) next to your underhood fuse box, on the BACK of the plug. You will notice that the light blue wire goes into one side, but does not come out the other. Tap the wire there and extend.

THATS IT! However, like I said, there may be some differences with an H22A4. Especially since that engine was made of a OBD2 vehicle. And, unless you have a 96 Si, you're running on OBD1.

good luck-

brad

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aneurysm &raquo;</TD></TR><TR><TD CLASS="quote">wow.....Sorry you have gotten "SEARCH" as a reply from everyone. Let me see if I can point you in the right direction.
</TD></TR></TABLE>

I don't think you read the whole thread before posting. He got all the info needed, including a link to a very extensive write up on how to do vtec, which is really all he needs to do.

 

Thanks Brad!

From other info. I have recvd (from certain mods here so I am confident the info. is accurate) the only thing I really need is an OBD-1 Dizzy which I have...and evertyhing else should be the same as the H22A.

Will look for these wires over the weekend when the weather is nicer.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aneurysm &raquo;</TD></TR><TR><TD CLASS="quote">wow.....Sorry you have gotten "SEARCH" as a reply from everyone. Let me see if I can point you in the right direction.</TD></TR></TABLE>

Yeah, no kiddding. In the time it takes to write why the poster should search....the answer could be given.

There is a user, CHK4TIX, who sells the pins needed to connect the wires to the ECU. It makes it MUCH easier. PM him.

 

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

Yeah, no kiddding. In the time it takes to write why the poster should search....the answer could be given. </TD></TR></TABLE>

second that


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AndyD &raquo;</TD></TR><TR><TD CLASS="quote"> There is a user, CHK4TIX, who sells the pins needed to connect the wires to the ECU. It makes it MUCH easier. PM him. </TD></TR></TABLE>

Ok, thanks! Save me a trip to the auto part store...

 

I bet you have the ecu pins already, and only lack the wires on the engine harness. Check before you buy. As far as the search thing, that's the whole purpose of write ups. They explain in very good detail what you need to do. If someone were to answer your question instead of saying seach, you don't get nearly as much info. Also, it takes less time to search than it does to start a thread.

 

how about yall stop being dicks and just give him an answer instead of telling him search search search all the time it aint that hard

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xxredpreludesixx &raquo;</TD></TR><TR><TD CLASS="quote">how about yall stop being dicks and just give him an answer instead of telling him search search search all the time it aint that hard</TD></TR></TABLE>

because he gets a better answer when he searches. when you search you will learn things about the topic that you didn't even know to ask about. I guess it just depends on whether or not you really want to learn about your car, or just get the minimum info to fix a specific problem. A real enthusiast will search every time. and as far as being a dick about it, after you are on this board a little longer, you will realize that people ask the same questions every other day. it's redundant as hell.

 

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

because he gets a better answer when he searches. when you search you will learn things about the topic that you didn't even know to ask about. I guess it just depends on whether or not you really want to learn about your car, or just get the minimum info to fix a specific problem. A real enthusiast will search every time. and as far as being a dick about it, after you are on this board a little longer, you will realize that people ask the same questions every other day. it's redundant as hell.</TD></TR></TABLE>

this is very very tru but asking a redundant question doesnt give the right to people to be dicks true he should have searched the topic before making this topic and asking the quesion again but again dont be a dick about it thats al im saying

 

i don't try to come off as a dick, but I am very blunt. over the internet being blunt is very often mistaken for being a dick... the cause of a lot of internet arguments.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IHateJDM &raquo;</TD></TR><TR><TD CLASS="quote">i don't try to come off as a dick, but I am very blunt. over the internet being blunt is very often mistaken for being a dick... the cause of a lot of internet arguments.</TD></TR></TABLE>

ok i guess it was maybe how it all came off yes being blunt on the internet can equal=being a dick to ppl i guess im one but ok maybe its just been dicks ive dealt with in the past maybe u werent trying to be a dick i was saying u where being a dick to begin with i said in general is wat i meant but ok its cool i guess its just how everyone worded it

 

well, either way he got his answer. time to let this thread die...

 

deal

 

sometimes blunt is the only way to go...told some guy the other day to search HT himself for the answer....thanks for the help and no, don't think you are a dick.