Plug/sensor on vac pump

[75-K5]

Anybody know what the 2 prong plug on the vacuum pump is? I am hopeful it is for a tach, but I highly doubt it.

If it's useless, I'm going to throw out the vac pump and find a "dummy" plug with the shaft to run the oil pump and that's it.

 

[imiceman44]

Anybody know what the 2 prong plug on the vacuum pump is? I am hopeful it is for a tach, but I highly doubt it.

If it's useless, I'm going to throw out the vac pump and find a "dummy" plug with the shaft to run the oil pump and that's it.

I have seen one with the electric switch, and it was going to the TPS, I don't know what it does though.

 

[75-K5]

That brings up a good point, do I need the TPS hooked up if running a sm465?

 

[imiceman44]

That brings up a good point, do I need the TPS hooked up if running a sm465?

Running the 465, you will not benefit from it and if you don't have A/C you won't need the vacuum altogether.

 

[75-K5]

Good, thanks for the info. I will leave TPS disconnected and probably look for a block-off plug that runs the oil pump only in place of the vac pump shaft.

P.S. I will get with you shortly on the firewall filter.

Thanks

 

[imiceman44]

Good, thanks for the info. I will leave TPS disconnected and probably look for a block-off plug that runs the oil pump only in place of the vac pump shaft.

P.S. I will get with you shortly on the firewall filter.

Thanks

Where the pump goes, there is a block of plate when they don't use it.
I think I might have an engine that has it.

 

[75-K5]

I've been reading about a vacuum actuated wastegate. Do the GM-3 turbos have this? If so then I will need to keep it installed I guess.

 

[imiceman44]

I've been reading about a vacuum actuated wastegate. Do the GM-3 turbos have this? If so then I will need to keep it installed I guess.

I( wanna say no, the gm5 and gm8 I know have a waste gate but I think GM3 didn't but if you have it already take a look.

 

[BKinzey]

The GM-3 is a mechanical wastegate. GM-4 and above are vacuum.

 

[75-K5]

I( wanna say no, the gm5 and gm8 I know have a waste gate but I think GM3 didn't but if you have it already take a look.

Well I do have it but I have no clue what the hell I'm looking at I thought I had heard something about the GM3 not having a true "wastegate" but wasn't sure exactly what that meant. So I won't need any type of actuator for the wastegate at all?

 

[imiceman44]

Well I do have it but I have no clue what the hell I'm looking at I thought I had heard something about the GM3 not having a true "wastegate" but wasn't sure exactly what that meant. So I won't need any type of actuator for the wastegate at all?

Well BKinzey says it's mechanical so there no need for your intervention it just releases when it get's to a certain pressure.