alright , so got the car on the road again ... I tried to give it a bit of boost while the primary turbo is on it works wonders it works perfectly give it a little htrotle and boosts up until transition , after transition No boost at all .. maybe 1 psi

I did a couple searches and most were from the ancient days

But I think I've narrowed it down to 2 possibilities

1 the ACV being bad and letting the air flow out of the secondary turbo working on taking everything a part and testing it ,

2 the waste gate actuator is bad and the wastegate is stuck in the open position .

My question is , well am I missing something besides that ? LOL and

How do I test to see if the actuator is good or bad right now with the car turned off the arm is pulled inwards which I think is the closed position ?? no ?? I dont remember haha

ANd the ACV should be pretty straight forward blow through it if it flows then its bad LOL

 

acv seems to be working perfectly ... I guess that leaves either something is causing the aCV to stay open or waste gate is staying open .

 

Take a look at what happens during the ~4500 mark:

Turbocharger Overview

A lot of moving parts. I would start with the Charge Control & Turbo Control.

 

I know the transition happens , Turbo control I dont think thats it because I can hear the difference in tone from the exhaust when the transition happens .

I'm guessing its the charge relief , but what about the charge relief is causing it I tried blowing through it and cant only have one person so cant try actuating it having someone blow into the little vacume ,

But I was thinking if the solenoid went bad on it .. then could that trigger the charge control to stay open constantly? I disconnected the vacume that goes to it and i'm gonna take it for a quick spin . lets see if it stays closed it should boost past the transition .

 

alright back to square 1 lol , nothing changed So i'm wondering if maybe the issue is with the turbo control solenoid .. back to do some research , and TY for that link

 

Already boosting a fresh rebuild? Sorry to tell you this and take it how ever you want, but I see more rebuilds for you in the near future.

 

stay on topic or please leave the thread

 

WG and PC connectors switched?

 

They were , LOL but I fixed it .. the plugs have a white dot on it to go with the WG solenoid so I matched them up correctly , but still having the boost issue

TY though , I'm trying to look through the history to see of people who have had my issue infact I've found multiple , But for some reason no one ever posts if they fixed it or how they fixed it LOL .

I'm starting to think the turbo control solenoid is no good it had cracked a couple years ago , i used some sealant and I never had an issue , but maybe its just letting vacume escape and causing the actuator not to open up.

during lunch I'm gonna go see if I can find one.

 

bit of an update the turbo control vac solenoid wasnt the issue if the vac solenoid is working would it still need the boost solenoid to work? or would it just speed things up?

seems like the issue may be the actuator itself

 

You probably swapped hoses somewhere.

 

Nope its propperly routed I double tripple checked every line , BUT I discovered thatone of the other solenoids were broken...

So i'm going to replace it tonight , and we'll see if that fixes the issue.


after I replaced the turbo control solenoid vacume(yesterday)

After following all the lines i discovered that the purge from the charge control actuator was broken , so I removed the solenoid , and bridged the 2 openings left from the solenoid on the vacume rails of the rats nest so vacume would not escape .

I put the car back together with the intention of finding a replacement for the solenoid , being that it was almost midnight I didnt want ot keep working on it honestly lol .

so today in the mornning I decided to take the car to work and try and see what the results were ,

Now its the opposite no initial boost , but as I get into the 2.5 + k rpms it starts to spool . I'm only doing light 5 psi pulls . and after the transition the turbos spool much faster . so Maybe the turbo control actuator is now working .


and now the only issue is the charge control actuator that isnt because of the broken solenoid . and is maintained open from the lack of vacume so it acts as a major boost leak since no air is coming in and air is just exiting through the secondary intake .

 

you mean the power fc doesnt have the answer to all your questions???? good luck diagnosing and you shouldnt be boosting on that fresh of a motor but you already knew that

 

PFC doesn't magically fix broken solenoids

motor has 450 miles on the rebuild out of a 1000 mile break in , I'm only boosting because the builder said it was ok to do some light pulls . its not like I'm going WOT and hooning , I have twins light throttle is enough to make the car boost

 

Keep in mind that just because the other solenoids are not visually broken, that doesn't mean they are all working properly. Check this thread:

https://www.rx7club.com/3rd-gen-arch...-issue-685269/

 

yup i tested the turbio control it was goodx replaced the broken charge aCTUATOR SOLENOID and I got sequential again.