Vtec oil pressure sensor code 22?? wtf
 

I'm still in the process of working the bugs out my z6 build in my 91 HF CRX. My latest problem has been that after I make a pull I, when I let off the throttle I get a code 22 which is vtec oil pressure. Later that day (July 4th) I talked to JD who said it was a lack of oil. I checked my oil and the level was fine. I then pulled a vtec solenoid off another motor I had laying around and replaced the solenoid on my car. I have not had a chance to drive the car since. The only other thing I could think of that would be wrong is the way I have vtec wired back to the jumper harness. I currently have the green vtec wire ran to the designated wire on the jumper harness and did the same with the blue wire from the vtec oil pressure sensor. I figured the black wire was a ground and wired grounded it on one of the vtec solenoid bolts....Is this right? Should it be grounded on the chassis? Below is a pic

Attachment 16594

Re: Vtec oil pressure sensor code 22?? wtf
 

I am not sure what the black wire is without looking. And I am not going to look until you try this new solenoid out.

Other things that it can be are just a dirty solenoid. clean out the passages and contacts a little then try again.

Re: Vtec oil pressure sensor code 22?? wtf
 

clean it, connector..

Re: Vtec oil pressure sensor code 22?? wtf
 

What would be the best thing to clean the solenoid out with? brake clean?

Re: Vtec oil pressure sensor code 22?? wtf
 

brake/carb whatever you have that is high pressured can



You can disable that sensor with a piece of wire

Re: Vtec oil pressure sensor code 22?? wtf
 

Please explain........ Do I bridge some pins or something??

Re: Vtec oil pressure sensor code 22?? wtf
 

Try grounding to thermostat housing.

Re: Vtec oil pressure sensor code 22?? wtf
 

ya you can bridge both vtec wires together
search ht for the ecu pin info

Re: Vtec oil pressure sensor code 22?? wtf
 

For anyone who might'v been wondering, its pins A4 and D6 that get bridged together. Now one last question, Does the ground wire from the vtec pressure sensor need to be grounded still??

Re: Vtec oil pressure sensor code 22?? wtf
 

Well I checked over my wiring one more time and changed my ground wire from the solenoid to grounding on the chasis...still throws a code 22. Tomorow I'm going to install an oil pressure gauge.

How much pressure is a d16z6 supposed to run at at idle and WOT???

If I have good pressure I'll bridge the pressure sensor w/the vtec line....Man this car's a pain in my ass.

Re: Vtec oil pressure sensor code 22?? wtf
 

yes

Re: Vtec oil pressure sensor code 22?? wtf
 

WOT has nothing to do with oil pressure.

RPM does.

WOT @ 1000 rpm isnt going to have more oil pressure than 1000 rpm closed throttle.

Re: Vtec oil pressure sensor code 22?? wtf
 

......ok, on a constructive note. How much pressure does ur car make at 7000rpm?

Re: Vtec oil pressure sensor code 22?? wtf
 

Now that I read that over again for the second time it makes little sense. None of my other cars have different oil pressure levels that are set by by different RPMs. I might be a noob here but I'm not a noob to cars in general. In both my Camaro and Nova, the idle pressure is around 25psi, my cruise pressure is around 40-45 psi, and WOT no matter what RPM above ~2500~ RPM is around 70 psi. At a certain psi of pressure the pump will maxed out which on a SBC its around 70-80. If your theory was true then an RX7 that spins twice the rpm should then have twice the psi which would be around 140psi.....which is not true

Re: Vtec oil pressure sensor code 22?? wtf
 

i think it is rpm based, with the pump flowing more the faster it spins, which is related to engine rpm. with the rx7 example, it may use a smaller pump that dose not flow as much. maby 1/2 as much at idle, and at 10k rpms runs at 70 psi or so..

But im wasted right now, and not sure if i got a grasp on the situation right now.

Re: Vtec oil pressure sensor code 22?? wtf
 

Yes that makes sense, but why do all of the sbc's max out at 70-80 psi before my highest rpm. I could have 80psi before I hit 4000rpm? And it doesn't go any higher.

igotnothin, when ur over to the shop today we can take the Nova for a spin and I'll show you what I'm talking about. I know that Hondas have a pump that spins off the crank and sbc's spin off the camshaft but I think the concept is still the same.

Re: Vtec oil pressure sensor code 22?? wtf
 

OK.....so I just called my machinist/engine builder and spoke with him about oil pumps, he said that oil pressure is based off of three variables. Oil viscosity, rpm, and type of oil pump. He also mentioned that oil pumps have a bleed off valve inside of them that release the extra oil pressure once it gets up to the "max" psi. This bleeder valve acts like a wastegate in our turbo cars. He also said that in my case since I run high pressure pumps in my Chevy motors the pressure shoots up alot quicker than if I had a stock pump.

So in the end, rpm is a major factor but not the only factor to oil psi

Re: Vtec oil pressure sensor code 22?? wtf
 

Your absolutely right, its tops off. I didnt mean it will keep rising as you get up to 20k rpm lol.

My mistake.

What I was basically trying to get across is WOT has nothing to do with it.

Re: Vtec oil pressure sensor code 22?? wtf
 

so did you disable the pressure switch



This is something I had to learn doing all the obd2 jdm swaps since in Jap land all obd2 vtechhhh solenoids dont have the pressure switch

Re: Vtec oil pressure sensor code 22?? wtf
 

yes I did but the car is blocked iin my shop by a 6 ton John Deere tractor my dad lost the key to....I will hopefully be able to drive it tom. night or friday and see if it works

Re: Vtec oil pressure sensor code 22?? wtf
 

Well I finally got around to driving the car....ya I know a week later and the car wasn't hitting vtaakk because when its warm its not producing sufficient pressure. When I start i up it sits around 70 and as it warms up it slowly tapers off. after 10 minutes it'll be idling around 25 psi and when you give it gas the pressure rises as it should. Once I drive the car a little over a mile I guess the car fully warms up and the idle pressure drops to around 12 pounds and at any other rpm it won't go above 25-30 psi....fail. So today I'm going to see if straight 30 weight oil helps if not I guess I'll be installing an oil pump this weekend ::)

Re: Vtec oil pressure sensor code 22?? wtf
 

Good luck with the oil pump... im a sit that one out... :P

Oh did you get the 30 weight in there yet??

Re: Vtec oil pressure sensor code 22?? wtf
 

^^^Damn what a friend, I give you a crazy deal on a LS head and you can't even give me a hand, damn thats BS... jk