Alright at this point I have already cracked and lost my mind....so all is well...My second turbo still wont kick in but it leaves me to believe it has something to do with my odd power flux past 2500 rpm...which is when the first turbo is supposed to start coming on line. This a video of the flux so you can see what I mean. Notice how below 2500 rpm it holds just fine no fluxing at all, above 2500 and it starts to go up and down, sounds like it gets a jolt of power suddenly and then bleh, jolt of power and then bleh.

http://home.ripway.com/2005-4/297064/CIMG0742.AVI


Also when do the secondary injectors come online? This might even be a problem with the injectors as well.

That or my trailing coils plugs and wires. But all of the coils tested just fine hot and cold.

This the boost pattern thus far 10 psi first turbo no problems....4500 rpm it dips to 8 and then start to die off over to 3-5psi or so. all the way till redline.
I also inquired about plugin up the two ACV pipes becasue I no longer have a blower....when I did that the car smoked really heavily....so I unplugged the lower one.

Here is a picture of the hole I was talking about in my turbo precontrol actuator
http://home.ripway.com/2005-4/297064/CIMG0745.JPG

I'm going to order new turbo ontrol solenoids today and a coil harness in an attempt to solve this dilema

 

I'd say that hole could just be a small problem.

Since you're getting a new one, plug it and see what happens. Duct tape or whatever.

IIRC, secondaries come online under boost.

As far as the revving issue, I can't hear it, just see it. Could that just be a tuning issue?

I've got my actuators floating around somewhere. I don't know how much they are new, but if you need them cheaper, let me kmow.

 

That hole is clearly not an issue - it's on the unsealed side of the diaphragm.

Do you have a Mityvac Pressure/Vacuum tool kit? Now would be a good time for one, at the price of a solenoid it may save money.

Anyway, use that Mityvac and first test both lines going into the TCA for leakage. (See that the pressure side holds pressure, and vacuum side holds vacuum). Then tee the gauge into each line (easy to access at the hardlines leading down to the actuator) and take it for a run. The pressure should give full pressure at exactly 4500 rpm, and the vaccuum should do the same. Try to do it with the engine nice and hot to see if the solenoid failure is heat dependent. If one of these isn't working right, tee in next to the vacuum and pressure tanks to test for leaks, and that sufficient vacuum and pressure gets stored there while driving (vaccuum should have 15inHg or more, pressure should have 8-10psi or more).

Dave

 

Are you on stock ecu? i think others (including myself) had similar issues where the car would hesitate under light load, much in the same way as you were showing. The car would stagger, and the rpms would drop as long as the car is under light load. Once you push the gas pedal harder, the car would "come out of its funk" and jolt ahead. After I got a PFC, this problem went away completely BTW

Did you try checking your TPS?

Im not exactly an expert, but I think your boost problem may be separate from your hesitation problem. Sounds like something to do with vac hoses or soemthing for the 2ndary, not sure on that issue though.

Let us know how you fix it.

 

Hesistation problems only occur at around 0psi boost. Under partial or full-boost throttle, it never happens. So the hesitation/ECU thing is not related.

I'm confused about the video: is this of the car while driving, pedal down hard? Does the car refuse to go above 2500rpm? You won't see more than a few psi of boost if the car isn't accelerating under heavy throttle.

Dave

 

You are correct in saying hestitation only occurs around 0 boost.
The hesitation/ecu thing could be related because more than a few people (including myself) solved their hesitation problem with an aftermarket ecu.

I believe the hesitation arises becuase the stock ecu tells the car to cut fuel or gives faulty signals to the car at certain rpms.

 

Sorry I should have been more clear with the hesitation issue. this is when the car is sitting still in neutral and I am lightly stepping on the pedal. The hesitation starts when I hold the throtle at 2500 exact, anything below and it is fine anything above and its the same thing. Oddly enough though sometimes it doesn't do it. But if I rev in place up to 4500 rpm where boost reaches 4 psi it starts that odd issue, thats why I think it might be some odd solenoid that belongs to the primary turbo. Any ideas? Yes I am stock ecu.

 

Are you trying to fix/diagnose the secondary turbo issue, or this hesitation while revving in neutral? These are generally completely different issues. If it's a boost issue, then revving in neutral isn't the correct information - you need to evaluate it under load - start with the 3rd gear WOT boost pattern.

Dave

 

both

 

If you do a search on "hesitation" and perhaps "PFC", you should find people that had similar hesitation problems that fixed it with an aftermarket ecu.

Of course, your problem may be a result of something else

 

deleted

 

I will let this post be for now untill my new solenoids come on.

 

Actually! Before I let this die I might as well slide in one more bit of info....At times when I start the car up the engine put puts a littel and the usual white start up smoke comes out of the exhuast but it blows out smoke rings when you hear it put put....any ideas, yes the plugs are clean, the wires are new and I am running a TII coil with aMallory 6a CD ignition amp