Got a use motor in... now boost issue!
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--Almost Retired--
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From: SoCAL
Got a use motor in... now boost issue!
Okay, I've bought a use, complete motor with turbos at this one wrecking yard.
Got it on my FD and fire right away. After about 10 min of letting it warm up and idle, I took it out for a spin...
On first gear, Primary boost will reach 10, and transition at 0 then at 5.5 rpm or 6K RPM the secondary turbo will come on. But in 2nd and 3rd gear boost will come flawless. Sometimes....
Just happen to be on 1st gear the most that on 4.5 RPM 2ndary boost dont come on till 5.5 to 6 K...
what do you guys think could be the problem...
Got it on my FD and fire right away. After about 10 min of letting it warm up and idle, I took it out for a spin...
On first gear, Primary boost will reach 10, and transition at 0 then at 5.5 rpm or 6K RPM the secondary turbo will come on. But in 2nd and 3rd gear boost will come flawless. Sometimes....
Just happen to be on 1st gear the most that on 4.5 RPM 2ndary boost dont come on till 5.5 to 6 K...
what do you guys think could be the problem...
Last edited by z28_SS; Nov 5, 2004 at 05:39 PM.
Thread Starter
--Almost Retired--
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From: SoCAL
Okay,
since u guys make me look dumb and took it off, tell me what's making it do like that...!!
I've checked vac., CRV... all that.. Seems to be working fine. But does seem like theres a leak coming from the downpipe..
since u guys make me look dumb and took it off, tell me what's making it do like that...!!
I've checked vac., CRV... all that.. Seems to be working fine. But does seem like theres a leak coming from the downpipe..
Hooray For Boobies!!!
Joined: Sep 2002
Posts: 3,570
Likes: 1
From: Washington
https://www.rx7club.com/showthread.p...boost+problems
https://www.rx7club.com/showthread.p...boost+problems
https://www.rx7club.com/showthread.p...boost+problems
https://www.rx7club.com/showthread.p...boost+problems
https://www.rx7club.com/showthread.p...=Boost+Problem
What I found on the first two pages of my search. I would dig deeper to find more, but this may help.
It's just not a 7. If you want large pics as sigs, then they have to be boobies or an rx7
https://www.rx7club.com/showthread.p...boost+problems
https://www.rx7club.com/showthread.p...boost+problems
https://www.rx7club.com/showthread.p...boost+problems
https://www.rx7club.com/showthread.p...=Boost+Problem
What I found on the first two pages of my search. I would dig deeper to find more, but this may help.
It's just not a 7. If you want large pics as sigs, then they have to be boobies or an rx7
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Thread Starter
--Almost Retired--
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From: SoCAL
Yes, I've search... and found results, but most of them are not like mine.
I guess, squential problem is such a common problem that could relate to tons of issue..
I'm thinking about selling it now come to think of it...
13.5K and it's yours...
I guess, squential problem is such a common problem that could relate to tons of issue..
I'm thinking about selling it now come to think of it...
13.5K and it's yours...
Thread Starter
--Almost Retired--
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From: SoCAL
Originally Posted by x605p747R1
[url]http
It's just not a 7. If you want large pics as sigs, then they have to be boobies or an rx7
It's just not a 7. If you want large pics as sigs, then they have to be boobies or an rx7
Lawn Ornament
Joined: Apr 2001
Posts: 2,416
Likes: 2
From: St Louis, USA
Originally Posted by z28_SS
Well I bet my Z28 could hand your FD *** to ya...
please sell the car and go back to www.mulletlovers.com
The Turbo Control Solenoid / Actuator is one of the more complicated actuators as it requires both vacuum and pressure to operate properly. This actuator is controlled by two solenoids, (both are wired together to the one ECU output) one solenoid applies pressure to one side of the actuator and the other applies vacuum to the other side of the actuator. With pressure on one side and a vacuum on the other side of the actuator, the speed of the actuator is improved. A typical problem is loss of Secondary boost in 1st or 2nd gear at 4,500 RPM, but reliable operation in other gears. This points to one side of the Turbo Control Actuator not getting it's pressure/vacuum, so it will still operate but not quickly enough.
Thread Starter
--Almost Retired--
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From: SoCAL
Originally Posted by ejmack1
I would be willing to wager a large amount of money that that piece of **** could not hand my FD *** to me....
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Either way, it was a race you never won...
Thread Starter
--Almost Retired--
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From: SoCAL
Originally Posted by Mahjik
Thanks again Mahjik, makes sense, but where exactly is the The Turbo Control Solenoid / Actuator??
x605p747R1,
I take my words back, I just saw your mods and maybe you can hand my z28 *** to me...
Last edited by z28_SS; Nov 5, 2004 at 11:41 PM.
Originally Posted by z28_SS
Thanks again Mahjik, makes sense, but where exactly is the The Turbo Control Solenoid / Actuator??
http://www.scuderiaciriani.com/rx7/v...e_diagram2.jpg
One on the ACV and one on the solenoid rack. Both must be tested and checked for failure as well as the vacuum lines to and from them.
The actuator:
http://www.autosportracetech.com/RX-...BigPicture.htm
Constant threat
Joined: Jul 2001
Posts: 4,968
Likes: 39
From: near Wichita, Kansas
You actually found a used engine for sale at a salvage yard? If you don't mind telling, how much did you have to give for it, and where did you get it?
I found ONE wrecked FD in the Wichita area and the engine in it was already gone.
I found ONE wrecked FD in the Wichita area and the engine in it was already gone.
Thread Starter
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From: SoCAL
Originally Posted by bajaman
You actually found a used engine for sale at a salvage yard? If you don't mind telling, how much did you have to give for it, and where did you get it?
I found ONE wrecked FD in the Wichita area and the engine in it was already gone.
I found ONE wrecked FD in the Wichita area and the engine in it was already gone.
My friend got it for me in Rancho Cordova, Sacramento...
Thread Starter
--Almost Retired--
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From: SoCAL
Originally Posted by Mahjik
the actuator (charge control)
the actuator (Turbo Pre Control)
the actuator (Wastegate Control)
or the actuator (Turbo Control)
Lawn Ornament
Joined: Apr 2001
Posts: 2,416
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From: St Louis, USA
Originally Posted by z28_SS
I bought it for $3,000 cash out the door, with a warrantee of 6 months... The warrantee state that it has good and high compression on both rotors, and warrant any coolant seals, apex seals and etc... if those were to go out on me...
My friend got it for me in Rancho Cordova, Sacramento...
My friend got it for me in Rancho Cordova, Sacramento...
was this just a regular junk yard, cause i dont remember any rotary specific places in rancho, especially since K2RD moved
Thread Starter
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From: SoCAL
Originally Posted by ejmack1
Wait is Mazdaperformance or whatever in Rancho? or was that Roseville...
was this just a regular junk yard, cause i dont remember any rotary specific places in rancho, especially since K2RD moved
was this just a regular junk yard, cause i dont remember any rotary specific places in rancho, especially since K2RD moved
Originally Posted by z28_SS
which particular actuator should I look at...
the actuator (charge control)
the actuator (Turbo Pre Control)
the actuator (Wastegate Control)
or the actuator (Turbo Control)
the actuator (charge control)
the actuator (Turbo Pre Control)
the actuator (Wastegate Control)
or the actuator (Turbo Control)
The Turbo Control Solenoid / Actuator is one of the more complicated actuators as it requires both vacuum and pressure to operate properly. This actuator is controlled by two solenoids, (both are wired together to the one ECU output) one solenoid applies pressure to one side of the actuator and the other applies vacuum to the other side of the actuator. With pressure on one side and a vacuum on the other side of the actuator, the speed of the actuator is improved. A typical problem is loss of Secondary boost in 1st or 2nd gear at 4,500 RPM, but reliable operation in other gears. This points to one side of the Turbo Control Actuator not getting it's pressure/vacuum, so it will still operate but not quickly enough.
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