my vtec isnt workin in my sohc. my check engine lights on but it was like that when i bought the car and i ran a diagnostic test on it and they said i got troubleshooting problems wit my fuel. any one ever have this happen to them and how would i make the vtec work again and also how would u fix the troublshooting problem?.. sorry im still a newb wit this honda stuff..

 

vtec wont engage if there is a problem with the fuel delivery system. so i say you find out what code you are throwing, fix it, and if everything else is working, you will have vtec

 

Is the engine low on oil?

Fixing the CEL code will likely bring VTEC back. What specific CEL code(s) is being thrown?

 

i just changed the oil so that cant be it. and how do u find out the code on what the problem is?..

 

its a sticky at the top of this thread
https://honda-tech.com/zerothread/1901557

 

thanks

 

ok i got the "receipts" from autozone and my code is p0453 and it says that the pcm has determined that the voltqage signal from the pressure sensor in the evaporative emission control system is to high for the current engine operating conditions. (please let me know how to fix) and the other code is p1382 and it also states that the cylinder position sensor has no signal. (please let me know how to fix this also). any help would be greatly appreciated. thanks

 

vtec wont kick, if CEL is on

 

well how do i fix the problem? i tried to do what the sticky says but it didnt help. any advice?

 

what do you mean it didnt help? you couldnt get the cel to flash? cause im not sure exactly what those codes are saying. ill look at them again. but if you could give me a simple number it would be easier for me

never mine that^^^^ i found a list that words them differently.

 

To get more feedback, post the codes you retrieved from the ECU.

 

thats what im sayin. my cel doesnt flash. man i need some serious freakin help..

 

does the light turn on when u turn on the car

 

yea its always been on lol it dont flash or n e thing.

 

how long has the lights been on.

the cps is in the dizzy. so i would first check to make sure that every wire on both sides of the dizzy clip are in there good. ( and hope you dont need a new one)

the other one, with some searching i found this

" ive heard of people getting that code when they fill there car up all the way to the top of the filler neck"

and if thats not a possibility ( if you havent filled up recently) check the vacuum lines, around emissions equipment. charcoal canister, evap...

 

that code he is giving is for an OBD2. I don't know if the light flashes for OBD 2. I think you just need to get the code read and he did.
"P0453 Fuel Tank Pressure (FTP) Sensor Circuit High Voltage"
That's your problem. =P Check grounds and connectivity.

 

yes the light flashes in obd2 cars.

but yes he did also provide the p#### codes

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by newbbb &raquo;</TD></TR><TR><TD CLASS="quote">yea its always been on lol it dont flash or n e thing.</TD></TR></TABLE>

This symptom may indicate a problem with the ECU (=code 0).

 

so how do i fix it lol? its gettin dark so imma have to check the lines and connectivity's tommorrow.

 

Unfortunately, if the ECU were bad, it must be replaced ($$$).

 

ok how do i know if my ecu is bad?

 

Another possibility is that there is an electrical short in one of the wires for the service check connector or the 7.5A BACKUP fuse under the hood.

A bad ECU is difficult to prove. Most mechanics try rule out every other possibility before replacing the ECU. Code 0 is a hint that the ECU may be bad.

 

i just replaced that fuse recently i think.. i know i replaced a blown fuse that didnt let me start my car. so im not sure if thats it or not.

 

I'm pretty sure the engine will start if the 7.5A BACKUP fuse is blown.

 

You should check the charcoal canister and make sure that all the lines coming from it are connected at the other ends securely and don't look broken cracked bound up or plugged off. Make sure that all the sensors that they go to are plugged in also. If all this stuff looks good, you should replace the gas cap, it's probably not ventilating the gas tank properly.