No boost after transition ACV? or wastegate?
12-18-13, 05:25 PM
#1
No boost after transition ACV? or wastegate?
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
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
12-18-13, 06:35 PM
#3
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.
Turbocharger Overview
A lot of moving parts. I would start with the Charge Control & Turbo Control.
12-18-13, 07:15 PM
#4
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.
Turbocharger Overview
A lot of moving parts. I would start with the Charge Control & Turbo Control.
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 .
Last edited by Tem120; 12-18-13 at 07:19 PM.
12-18-13, 08:51 PM
#5
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 .
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 .
12-19-13, 08:54 AM
#9
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.
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.
Last edited by Tem120; 12-19-13 at 09:08 AM.
12-20-13, 07:55 AM
#12
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 .
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 .
12-20-13, 09:09 AM
#14
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
Last edited by Tem120; 12-20-13 at 09:16 AM.
12-20-13, 12:21 PM
#15
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/
https://www.rx7club.com/3rd-gen-arch...-issue-685269/
12-21-13, 03:18 AM
#16
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/
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.
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