I wrote the second part first but I figured I should put whats going on first instead. On cold start up , the car runs fine, and throttle response is good, wouldn’t say perfect but eh. Once the coolant starts getting up to tempt, the throttle response becomes **** , and a few seconds later , no throttle response at all pretty much. It won’t go above 1K RPM , and if you put the pedal to the floor , it’ll just sort of bog at about $800 RPM. It’ll hold an idle everytime it relearns for the most part but like I said , won’t go past 1K RPM and has no power at all pretty much. I’ve researched LIMP mode in these cars but this is on another level I believe lol. I’m getting good oil pressure, so I’m not sure whats wrong. I also noticed the longer it idles and if I try to mash on the gas , the throttle body will start making a loud high pitch buzzing sounds. Only when you gas or it idles long enough. I don’t see how the throttle body would correlate to it warming up and then acting weird though.

So pretty much, the cars fine when it’s cold start, but warmed up = ****. Even with the codes in the system it’ll run fine while cold for a little bit. It does stall occasionally though, and more than occasionally when warmed up.

Now by the title , some of the first thoughts that came to your mind was oil gallery gasket/bad ground/change solenoids/check oil level. This is a VQ35DE , I changed the oil gallery gasket even though thats more of an issue on HR’s supposedly, I checked my grounds. Now I feel that I might be missing one because I have this weird ribbon cable with two metal circle ground points on the end , but I can’t for the love of me figure out where they go. I’ve tried searching to no avail. Otherwise the other grounds are there . I replaced the intake timing solenoids, and I’ve changed the oil a few times now due to constantly pulling the timing cover off. And , yes I checked the timing several times as well.

I hope I didnt leave anything out, oh and I’m also getting a misfire on cylinder 4 , but that code fluctuates to several random misfires sometimes so I believe thats a side effect of the whonky P0011 P0021 codes. Any help would be greatly appreciated guys!

P0011 and P0021 are VVT Solenoids , which I’ve replaced. And I’m not sure about how to test the throttle body , but like I said , when it’s cold , it’ll rev up fine . Way past 4 - 5 rpm . But once warm , it won’t go over 1 RPM unless i reaaallllyyyy slowly push the pedal in.

That is not my picture , I found it on the internet , but I guess this picture answers my question, but I only read that it’s meant to remove electricity from the exhaust or something , and that people remove it altogether when installing their new exhausts. Im not sure if there’s more than one , but thats exactly what it looks like except the end you can see also has a metal circle ground point. So I don’t believe thats my problem. Does anyone know all important ground locations ? It’s hard to find a simple write up with only those without finding ground kits lol.

i have a feeling it’s electrical only because I had another couple of solenoids that would just click whenever you pressed in the accelerator pedal. And because the throttle body starts whining witha loud pitch buzz as well. But this stuff only happens when the cars warmed up. I’d figure it would happen all the time . I feel so close yet so far . Any ground location info , maybe possible fuses , anything would help honestly. I just want my baby back haha. Been a long rebuild