Greetings Rotorheads! Perhaps you can help me with this. On my 84 SE I have the S5 intake with functional aux ports. I have the VDI operating pretty much like stock with the air pump and rats nest solenoid with RPM's controlled by the Haltech. It works well, opening fully and then closing when the RPM's drop below 5500K. So I ran my aux ports the same way to get away from exhaust back pressure. I am using the stock air pump, RPM switch, and rats nest solenoid as with the VDI. I don't have another "general" output wire from my Haltech, so I had to go with the RPM switch. I basically have two issues: The first is that the aux ports will slowly open up before the desired RPM. I imagine this could be due to an internal leak in the solenoid. But when I swapped it with the VDI solenoid it did the same thing. I'm guessing that whatever little amount of air that is bleeding over internally in the switch is enough to slowly open the aux ports? Perhaps it takes a little more air pressure with the VDI, which is why it doesn't do the same? The second is that once the aux ports are fully opened, they do not return to the closing position and bleed off like the VDI does. Both solenoids are the two barb type with the vent. The VDI solenoid has a blue dot, and the aux port one has the green dot. Any thoughts you may have is greatly appreciated.
Thanks!
Mike

 

I don't have much experience with using the air pump for the actuators, but I've heard a lot of people have had good experiences with a Ford lumbar pump. It snaps the actuators open at the desired RPM, and it has an internal pressure relief so that they also close as desired. May be something to look into

 

Thanks for the reply. It may be an issue with the rpm switch itself. I'll have tp do some more troubleshooting.

 

Where are you referencing the rpm signal for the rpm switch?

 

From the factory trailing coil wire. I believe it's yellow with green stripe? I'll have to check.