vtec help - Honda Prelude Forum

jgcpn33 · 10-02-2002, 09:02 PM

Does anyone know where I can find a complete detailed wiring diagram for the h22 swap into a 95 prelude. I've done a ton of searches but came up with nothing.
I'd appreciate it
Thanks
Jonathan

concLude · 10-02-2002, 09:05 PM

why dont you use the Si or S harness, i did a jdm swap and used the stock si harness just had to run a wire for the Vtec and reverse but that was because i did automatic to manual - sorrry i cant help you out with your origional question but its a thought

jgcpn33 · 10-02-2002, 09:08 PM

i'm using the si harness but i had a mechanic do the swap and they wired the vtec wrong i think so i need to correct it.....
thanks anyway

preludechic · 10-02-2002, 11:48 PM

Do you know exactly what they did wrong? Because if you tell us, I'm sure one of us can tell you how to fix it.

jgcpn33 · 10-03-2002, 07:21 AM

well thats the problem.....I dont know exactly what they wired wrong but I can definately tell they did because I've tried 2 h22a ecu's and both are having problems...ex. not idleing properly, really rough excelleration....vtec wont engage sometimes....

Mark94 · 10-03-2002, 08:59 AM

Quote:

Originally posted by jgcpn33
both are having problems...ex. not idleing properly, really rough excelleration....vtec wont engage sometimes....

I'm not sure if it is a wiring problem because going by what you wrote, VTEC does engage SOMETIMES. If it was wired wrong, VTEC wouldn't engage at all. I don't think wrong wiring would also cause a rough idle either.

It could be loose vaccum lines, your VTEC solenoid is going bad, a bad TPS, etc.

It could be many things. I would take it back to the mechanic who installed the engine and have them run a diagnostics test on it to make sure everything is working properly. It should cost about $90 for the test but it will save you TIME and MONEY. Normally people try to trouble shoot on their own and end up replacing parts that do not fix the problem.

Good luck!

Mark

red92s · 10-03-2002, 10:57 AM

Quote:

Originally posted by jgcpn33
Does anyone know where I can find a complete detailed wiring diagram for the h22 swap into a 95 prelude. I've done a ton of searches but came up with nothing.

Did you bother to check the FAQ?

http://preludeonline.com/showthread....threadid=61484

brendon2k · 10-03-2002, 12:15 PM

Quote:

Originally posted by jgcpn33
well thats the problem.....I dont know exactly what they wired wrong but I can definately tell they did because I've tried 2 h22a ecu's and both are having problems...ex. not idleing properly, really rough excelleration....vtec wont engage sometimes....

the they 5spd p13's?

jgcpn33 · 10-03-2002, 07:26 PM

Thanks for the suggestions.....I'm going to use that thread to check and make sure those ecu pinouts are correct and if that still doesnt work I'll do what mark suggested.
Thanks
Jonathan