Ok I know there are threads available for this and Believe me I have been trying to find them but I can not. So I need some help please. I have an 89 GTU NA and my sleeves wont open. Can someone refrence me to a link or describe what I could do to try and fix the broblem?

 

FAQ on top.

Are the ports stuck? Could be 3800 rpm hesitation.

 

try this:

http://aaroncake.net/RX-7/6portfix.htm

 

Detach the vacuum hoses before you assume they won't open. The pressure will cause them to be VERY hard to open by hand.

Failing that, detach the actuator and see if the sleeves will move then. If not, you'll need to take off the lower intake manifold (PITA) pull the sleeves out, and clean them.

You'll also need a new lower intake manifold (better safe than sorry).

 

Ok I took the vacuum tubes off and tried to move them....the actuators themselves are very difficult to move and when I put my finger on the vacuum tube and brought my RPM's over 4000 I didn't feel any vacuum. The sleeves move freely.

 

Then make sure that air actually flows through those hoses when you blow on the end that is attached to the 6PI solenoids. Also, make sure the 6PI and VDI solenoids work (check their resistance, apply 12 volts from a small battery and make sure they click).

And then make sure you've got the hoses going to the right places...

Also, the actuators shouldn't be hard to move, they should simply have a lot of pressure on them because of the spring that's in them.

 

1. Pressure operates the series five.

2. There won't be pressure unless your driving. The solenoid actuation is designed that way.

3. Apply shop air pressure to the hose going to the actuators and see if they move. Low air pressure. Say below 10psi. Or blow into the hose that feeds the actuators and they should at least move.

4. Or simply go to the aux actuator solenoid and pull both hose off the solenoid. Connect both together and start the car. The airpump air should make them open. Of course they;ll stay that way and won't return to close until you shut the engine off. It'll show if they work ....or not.

5. I don't own a series five but that's how things work.

 

I hope you meant lower intake manifold gasket, because there is no reason to replace the manifold.
Its very simple to test. Can you move them with your fingers without them sticking (hint - the s5 actuator arms move out from the actuator, while the s4's suck into the actuator)? You should be able to pull them out without too much problems. If yes, then it isn't getting air pressure. If no, pull off the actuator. Can you move the actuator now? If yes, replcace the actuator, if no pull off the LIM and clean out the sleeves/actuator rods inside the manifold. Done.

 

Thank you all this is some very good information and I am using it and everything checks out. The only problem I am facing is that the actuators move fine and I believe that I have traced it back to the solenoids but I am unclear to which one does what. I see they are color coded but I just am not getting it. Which one of those guys Do what? Could someone reference me or help guide me? Thank you and hopefully I will have this thing working right soon.

 

I think the orange solenoid is for the 6PI. I'd go confirm this, but it's dark and cold outside. Check the solenoid rack for and broken nipples. what I did to test my solenoid was switch the lines around on it so vaccum was applied until 3500 RPM. I could then see the the actuators function at idle.

To do this just hook the line that feeds vaccum to the actuators into the nipple with the little filter on it. there are 3 nipples on the solenoid, and you can move the hoses and filters around.

I'd be very surprised if you had a faling solenoid though. I'd suspect a cracked vaccum line or broken nipple. It's not hard to break the 2 plastic nipples on the solenoids. I broke 4 of them when I did an engine swap last summer.

 

Take off the acuators and work them by hand.

 

The 6PI solenoid has a brown plug. I confirmed this by looking in the FSM while sitting inside where it is warm and dry.

 

Thank you when I wake up And if it is not raining I will go check this out!!!!!