I have recently built a ls/vtec engine in my 95 integra ls.
My problem is my vtec wont turn on when it is supposed to and i have a few ideas why but i wanted to see which one was correct, or if there was an idea i didnt think of.
So the car is running a OBD2B wiring harness thoughout the car and engine bay, then it has a xencron harness which converts it to obd1 to my p28ecu. There is a wire coming out of a4 for vtec from the xencron harness and also there is a wire in the original harness which is green/yellow which is supposed to be the vtec solenoid wire, but there is no plug in the engine bay for vtec, so i sliced into the green/ yellow wire and wired it strait to my vtec solinoid and it still doesnt turn on, so my question is what is wrong? i found a green/yellow wire which goes into one of the giant plugs in the engine bay, but no wire that comes out of it, so i didnt know what the problem is. I am also having idle issues while the engine is warming up, and i read this may have somthing to do with the IVAC system
Let me know what u guys think, here are some pics of what i am working with:
o sorry i forgot to add my p28 ecu is bypassing the pressure switch becuase, im using the jdm vtec solenoid, why check engine light is not on, but there is a light on that the original owner cut out of the dash, this car has alot wierd going on with it so im sorry if things arent esactly up to snuff.
is it possible to check cel codes without the CEL actualy lighting up?
ive tried to hit vtec when the engine is completly warm with the temp being just below half.
let me know thanks! il try to keep figuring it out, and maybe i should just buy a new obd1 wiring harness or somthing? thanks
yeah all warmed up has idle problems seems like a vaccum leak but i dont know, i heard it could be a problem with idle control valve or somthing, and vtec wouldnt turn on, i wish i could figure out why i cant check the CEL Codes. Any idea why i wouldnt be able to check the codes?
There is no actual CEL on, and i know it should be on becuase my o2 sensor is completly broken off, so is it possible to check what codes the the ecu is throwing without the light actually being on? and why isnt the light on!?
well the bulb is not dead becuase when i first turn the ignition it comes on then imediatly turns off. i thought vtec solinoid only had one wire? and then the vtec pressure sensor which i dont need has the ground and the wire that goes to ecu? if thats incorrect let me know! thank u for all the replys!
there is no black wire coming from my vtec solinoid becuase i have a jdm vtec solinoid, meaning there is no vtec pressure switch which has the ground wire? i dont understand what u mean, there is only one green wire coming from the vtec solinoid no other wires. i took that wire and ran it to my ecu with a speaker wire and spliced into where the wire for the vtec solinoid is. is this not right? and how do i take apart my dash with being able to put it back together?
Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way.
Copyright/trademark/sales mark infringements are not intended or implied.