Vtec Problems jdm h22

[Bryans 90accord]

jdm 95 h22a using jdm p13

Problem- sometimes vtec works great
sometimes it doesnt engage and just redlines at 6500
sometimes it engages and then at 6000 it feels like the motor kicks back and forth as in vtec is going in and out or something

i have three CEL
code 12 egr
code 21 vtec solenoid
code 41 o2

the car has been running perfectly fine with these codes, vtec always kicked in at proper times, no smoke, no burn oil, steady idle, good gas milage, a drove great.

*when doing the swap the motor had no VPS and on start up i would get code 22 VPS, so i did the proper wire installation, crimps, and code went out but code 21 came on and vtec worked after that, didnt work before with code 22.

any suggestions or questions? or point me to a thread.

[mtnbikaah]

i have three CEL
code 12 egr
code 21 vtec solenoid
code 41 o2

I would look into fixing these three things first.

Fix known problems first, especially if they might be related to the problem.

[Jarrett]

Seconded. There is no reason to really even make a post on the Internet detailing a problem that asks for a solution when you've got related issues you already know about.

Have you taken off the solenoid and cleaned the mesh screen?

[Bryans 90accord]

I would look into fixing these three things first.

Fix known problems first, especially if they might be related to the problem.

i have been working on these since i did the swap 5k ago.

EGR worked good on my f22 (using my f22 egr) its cleaned and so are the ports as i cleaned the whole IM, has proper voltage and vacuum.

O2 sensor i re-routed the wires (no cuts) to the downpipe right before the flex pipe. using a brand new (tried 2 new ones) NTK, i get the right voltage as stated in the Helms manual. checking all wires and o2 wires that are stated

Vtec solenoid, didnt try anything as vtec worked fine before and havnt had problems till now. (will take off and clean it this weekend)


any suggestions on the other codes?

[Bryans 90accord]

Seconded. There is no reason to really even make a post on the Internet detailing a problem that asks for a solution when you've got related issues you already know about.

Have you taken off the solenoid and cleaned the mesh screen?

thought i asked since the car ran fine with the codes, weekly i try something new to figure out how to get rid of the codes, without a chip ecu.
i want to get it to 100% no cel before a tuned ecu

[deevergote]

the fact that it "worked fine" with those cods is what you should be concerned about.

[Bryans 90accord]

the fact that it "worked fine" with those cods is what you should be concerned about.

I am concerned, i was suprised the car ran good with those codes, but for being my only car, i have no choice but to drive it, and trying everything possible to fix these CEL, but no luck. (i only have weekends to work on my car, full time student and employee)
Going to try some things this weekend, but Ive tried everything I can think of.
Biggest CEL is the 02 and EGR that i cant get rid of, VS i will clean this weekend and see what happens.

[laz93se]

Egr does not affect vtec, if you have a chipped ecu then the 02 sensor is not a problem , check vtec sel, tps sensor, speedo.

[da9b16]

The o2 wiring and egr wiring is your surging issues..... Egr ports cleaning is probably your largest culprit. o2 wiring you said you extended it..... did you pull it out of the harness where it splits from the drivers side area or did you cut it properly and rewrap the harness. The green wire is shared from 3 sensors.... being tps, 02 and I forgot the last one.... If any of these were PULLED through the harness rather than cut and re wrapped you could be dealing with multiple issues by pulling the wires loose or ripping them from their connections in the harness back to the ecu. I would suggest you start with your wiring and egr ports. These control your idle issues and over drive ability of the car. Vtec in your situation is a luxury and can be dealt with last.... who cares if vtec works when your car cant rev passed 3500-6k? Dont go fixing vtec so you can rev your engine higher and cause more damage.

As also stated these issues are easy to diagnose and start to attack for resolution. You already know the issues..... you can feel and attest to the symptoms while driving. Start simple and go for it.

I am correcting a harness/ horrible swap and wire tuck done by a local reputable shop right now for another CB7 board member. I would help you if you were local.... but if anyone can fix it..... this is the place. I love this place for the help and for the support.

[Bryans 90accord]

The o2 wiring and egr wiring is your surging issues..... Egr ports cleaning is probably your largest culprit. o2 wiring you said you extended it..... did you pull it out of the harness where it splits from the drivers side area or did you cut it properly and rewrap the harness. The green wire is shared from 3 sensors.... being tps, 02 and I forgot the last one.... If any of these were PULLED through the harness rather than cut and re wrapped you could be dealing with multiple issues by pulling the wires loose or ripping them from their connections in the harness back to the ecu. I would suggest you start with your wiring and egr ports. These control your idle issues and over drive ability of the car. Vtec in your situation is a luxury and can be dealt with last.... who cares if vtec works when your car cant rev passed 3500-6k? Dont go fixing vtec so you can rev your engine higher and cause more damage.

As also stated these issues are easy to diagnose and start to attack for resolution. You already know the issues..... you can feel and attest to the symptoms while driving. Start simple and go for it.

I am correcting a harness/ horrible swap and wire tuck done by a local reputable shop right now for another CB7 board member. I would help you if you were local.... but if anyone can fix it..... this is the place. I love this place for the help and for the support.

Egr ports are cleaned.

i extended the o2 harness by unwrapping it from the harness, no cut in this, on the other hand some wires were cut to extend....
Here is how i checked my work...
I tested the voltage signals going to the egr all ok
TPS is new blox, set perfect- again voltage and ohms are ok
o2 sensor wires voltage is ok and ohms is ok from sensor
the green wire i believe is ground, i checked the continuity of these wires, from the o2 to the tps.. from the o2 to the egr.. from the o2 to each side of the engine bay.. and the same with the tps and egr.. continuity checks out

so i have all the correct numbers going to each sensor, (i even checked every other sensor to double check my work.)
i have TRIPLE checked all connections and sensors, all have correct settings from the Haynes manual.

i also only used crimps to connect the wires, no solder. connections are good.

The egr valve came off a f22 with 136xxx, i also have a spare one which i swapped out to try..
i have tried 1 o2 sensor that came with the f22 with 136xxx i then bought a ntk o2, code still on, i brought the o2 back and got a another new one.


idle is fine, timing is dead on.

All three codes come on as soon as the car starts up, even after reseting,

i have a stock jdm p13... i do have a virgin p28, but thats getting hondata after i figure out these codes.


i dont understand what you mean by dont fix vtec to rev the engine higher? isnt the engine specs allows the motor to go to 7500? redline 7900


as for vtec not working, im going to clean the solenoid this weekend and see what happens.. for the other codes, im stumped.

[deevergote]

Do you have access to another P13? I don't know if it could be the ECU itself, but it'd be helpful to try another to rule it out. (smart move not doing the P28 until it's fixed, though... some people aren't so smart!)

[Bryans 90accord]

Do you have access to another P13? I don't know if it could be the ECU itself, but it'd be helpful to try another to rule it out. (smart move not doing the P28 until it's fixed, though... some people aren't so smart!)

i have thought of this but in my town, im the only CB with a h series, or a hobby working on my cb. (cbs i see just have rims and tint)

and everyone that i know who has a h22 mostly in civics, jumps right into the swap with a tuned p28.

ill see if i can find one but I doubt it, probably have to wait for a car meet or something

[tutsuo]

screw the EGR remove it ! get a chipped p28, o2 sensor and a new Vtec Solenoid.. i bet problem stops.

02 sensor is cheap
Egr block off plate is cheap
Vtec sol... i dont know about.

Im assuming is worked fine before because your ECU picked up on the little inconsistences that would create your current problem.

I.e. Your ecu saw certain values getting out of the normal pops a code so you have time to fix it befor eit becomes a bigger problem.

like my car when it went into limp mode before i spun a rod bearing

[deevergote]

Removing and disabling problem components is NOT the way to fix a problem.
Granted, the EGR system is pretty much worthless to an enthusiast... but still.

[h22sparkle]

the fact that it "worked fine" with those cods is what you should be concerned about.

Werd to the OP my best advice to you would be to check your vtec wiring first. if that does not work for vtec check the solinoid to make sure that it is properly grounded to the motor. Then check to make sure that you have enough oil in the car and that it is not the oil that has been caked up.

Then make sure that you do not have any leaks the vtec solinoid can and will get funny on you if that does not work take the solinoid off and clean the filter on it by spraying some carb cleaner in there until the filter mesh is a nice shiny silver. If the screen is gunked up and filled with trash the vtec engagement system is not going to work properly like it should.

Now as for the o2 sensor just replace it with a new one from the autopart store and get that over with it shouldnt cost you no more than like what $40 to $50 bucks. Hmm lets as for the egr situation you can either buy another or cut out the top of the sodacan flatten it put a high temp gasket sealer around it and then drill two holes to have it stay on the car directly. It should be on the forums of how to do it. best of luck and take care of your car.