riot196

So, for at least a couple of months or so I've been having issues with my rx8 idling poorly, very low low end power below 3k rpms, and giving it gas sometimes takes more than usual and it will jump in the rpms when I try to get it to move. Some of the codes that I've gotten are "po171, po506, po2070, and po610". Now, I probably jumped the gun, but I did attempt to install the updated SSV, but it is now running much worse, hardly holds idle, smells immensely of fuel under the hood, and just isn't going how i planned (go figure). I was just wondering if anyone had any insight to this issue, I've checked the electrical connection and if I'm not mistaken, everything checks out, the only thing I'm unsure of is the vacuum going to the SSV. Any help would be great.

M.Long

I had similar symptoms when my apv got stuck open, i would look at that. You can access it by moving the secondary air injection tube out of the way, there is an electric motor that turns a gear in the LIM. Remove the electric motor and rotate the gear with your fingers i should move easy and it rotates i believe 3/4 a rotation or so. There is a guide somewhere. It may not be the issue but i thought it worth mentioning.

lifelongpilot

To check your vacuum lines, start at the intake manifold, just after the throttle body. Facing down and on the right side of the manifold, there will be a vacuum port. The vacuum line from this port runs towards the front of the car and under the air filter box. This line provides the VFAD with vacuum. If you follow the intake manifold past the first vacuum port, you will find another near the firewall, also underneath the intake manifold facing down. This should have a short vacuum line that leads toward the center of the firewall. Where that line connects to is the vacuum chamber that provides vacuum to three different solenoids: Air Pump, Secondary Shutter Valve, and your VDI. Check all of those connections AND also ensure the solenoids are functioning properly. That's just your vacuum system though. The valves they control need to be checked as well as a multitude of other things. (MAF sensor should be first on your list)

riot196

So I JUST finished up putting a new SSV vacuum switching valve, I deleted the engine codes, reset the KAM, and fired it up after over a week, and it started a-lot better than it was, idle was still a little jumpy, but better. I took it for a drive and everything felt good, but when I went to turn around in my usual area, i put it in neutral, and it sputtered and shut off while coasting. It started back up with no issues, and didn't show any signs of stalling when leaving. but I was wondering if it could maybe be the car re--learning the trims? cause if I'm not mistaken, everything in the land of vacuum hoses down there should be all set. But any outside opinions would be great.

EDIT: So for the last 45 minutes atleast, I've been trying to figure everything out, the idle is back to what it was doing beforehand. if you give it any sort of gas and let off, it sputters down to atleast 500 rpms and it sometimes chugs its self back to life and the whole engine vibrates pretty badly. I may just give up and bring it to a mechanic that can throw it on a real engine diagnostics scanner and figure it out I don't know what else could be wrong.

Second edit: Engine codes came back "PO171, PO610, and PO610 P" I believe there was another code, but nothing related to the ssv anymore, so I'm running lean from another issue unfortunately. Car is dropped off at the shop waiting for monday to arrive, hopefully sorted out soon, I have a-lot more goodies to put on this car.