Vacuum pump confusion

[MuRCieLaGo]

Originally Posted by A26B

The vacuum pump provides supplemental vacuum to the secondary port throttle (SPT) system. Vacuum is also provided from the engine during normal operation. If your SPT system is tight, i.e. no vacuum leaks, it will hold the SPT system open for a short romp. When you let off WOT, engine will again provide vacuum.

With vacuum leaks, SPT will not open at all or slowly close, depending on severity of leak.

But I swear it doesn't run at all and I have done at least 8 WOT runs until 7k RPM and there's no issue. I thought that in these conditions the ECM would block my RPM to 3k...

Originally Posted by We Gone

WOW.. Looks like water intrusion for sure. You may want to check all electrical connectors, clean and apply some dielectric grease to them.

I knew there was something wrong when I opened it and it was full of rusty water...

Originally Posted by Gunny

ditch the secondaries, get a new chip from Marc, problem solved

This!

I own a RX-7 and I removed a lot of systems. Made everything easier.

I would like to remove that secondary system.