Not dropping to 5 psi on the second turbo but rather dropping to 0!!!!!!!
#1
thats not paint....
Thread Starter
Not dropping to 5 psi on the second turbo but rather dropping to 0!!!!!!!
The first turbo will push 10-11 psi then after 4,5-5k rpms you can feel the car lose power and see the boost gauge fall right back down to 0. It has been driving me nuts, I have pulled out half the engine bay trying to find anything. Just a little ago I found a torn hose, replaced it, got all happy because I thought I fixed it, put everything back together, no difference at all! The hose I replaced was the one comming from the charge control actuator. It looked fine untill I moved it and saw the rip. It's up on the secondary turbo portion of the Y pipe.
Chris
Chris
#2
Weird Cat Man
Birds of a Feather
Hello,
My friend's 94 Touring has the EXACT same problem. He's always too busy to let me poke around on it much, but as I'm sure you and I both know, it's gonna be a pain to figure out.
Did you take off the upper intake manifold and verify that every single hose is routed correctly? I have a color-coded diagram that I made that is better than the factory one...
http://www.zeroglabs.com/rx7/reference.htm
I will think about this problem and see if I can guess the right answer... but it's 3 am now, so I have to sleep!
I'm over in Rockville... maybe I've seen you around? I always wave at other RX-7s. I've got a 87 TII and a 93 R1 (in my garage in a billion pieces right now).
Anyhow, I swear I will try to think of the solution for you and for my friend... If I think up any 'must check' items, I'll post another message here.
Brian
My friend's 94 Touring has the EXACT same problem. He's always too busy to let me poke around on it much, but as I'm sure you and I both know, it's gonna be a pain to figure out.
Did you take off the upper intake manifold and verify that every single hose is routed correctly? I have a color-coded diagram that I made that is better than the factory one...
http://www.zeroglabs.com/rx7/reference.htm
I will think about this problem and see if I can guess the right answer... but it's 3 am now, so I have to sleep!
I'm over in Rockville... maybe I've seen you around? I always wave at other RX-7s. I've got a 87 TII and a 93 R1 (in my garage in a billion pieces right now).
Anyhow, I swear I will try to think of the solution for you and for my friend... If I think up any 'must check' items, I'll post another message here.
Brian
#3
thats not paint....
Thread Starter
Yeah a lot of people seem to have this prob. I just was reading a post about a similar problem fixed by replacing the cat or pre-cat. I don't see how that works out because the first turbo still boosts fine. Maybe it screws with the required pressure to start the 2nd.
I don't feel to comfortable to pull of the manifold.... I just don't have the tools or knowledge right now. I have poked around under there though, sprayed carb. cleaner, ect. It probably isn't a vacuum leak, maybe a bad solenoid, maybe the cat. If I do find anything I will let the forum know.
I give a thumbs up to any other 7 owner, if I have time to get my hand out the window I saw another White RX and was pretty excited, dude didn't see me though. I haven't been up around 495 or MD much in the 7 yet. "EugeneChoe" is another member who is up in Rockville. I met him up at the MD BBQ.
Chris
I don't feel to comfortable to pull of the manifold.... I just don't have the tools or knowledge right now. I have poked around under there though, sprayed carb. cleaner, ect. It probably isn't a vacuum leak, maybe a bad solenoid, maybe the cat. If I do find anything I will let the forum know.
I give a thumbs up to any other 7 owner, if I have time to get my hand out the window I saw another White RX and was pretty excited, dude didn't see me though. I haven't been up around 495 or MD much in the 7 yet. "EugeneChoe" is another member who is up in Rockville. I met him up at the MD BBQ.
Chris
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