On a 1986 LG4 there are 2 ports on the gooseneck, one that is a vaccum port the other that looks electrical. What would the effect of removing these from the gooseneck to use an aftermarket chrome gooseneck?

Jay

 

I'm guessing you mean the T'stat housing? If so (keep in mind I've never seen a LG4 though), what you're referring to is probably the thermal vacuum switch.

Check your emissions routing label under the hood, and you should be able to track down what it does/goes to.

Once you figure that out, you can decide from there.

 

One of the wires that leads from the thermostat housing to the carburator senses the temp of the coolant and tells the carb how much of a gas shot is needed, when the engine is cold. You will want to keep that

 

On this application the origional carb & emissions equips is removed.

Jay

 

In the stock setup:

The electrical connector is the coolant temperature sensor for the ECM. If you don't have an ECM, you don't need it.

The vacuum connector is the Thermal Vacuum Switch for the flapper valve located in the exhaust. It's part of the EFE system. If you don't have the flapper in the exhaust any more, pull the thing and plug the port on the carb. If you DO have the valve, you'll either need to retain it (find another hole in the coolant jacket) or bypass the switch and run manifold vacuum straight to the flapper valve (that should keep it open whenever the car is running).

 

My 86 Camaro is Canadian and it has no computer gear at all--period.

Yet it still has the wire from the thermostat to the front top of the carb.

Is this the sensor you are speaking of?

If so, how do you explain its presence on my non-cc car?

 

Odd, I've never seen that. I suspect it's a Canadian-only thing.

Anyhow, the CTS for the ECM is a two-wire connector that disappears into the wiring harness. Is the one you're talking about two wires?

 

Vacuum closes the EFE valve. You don't want constant vacuum on it.

 

I stand corrected. I don't have EFE on my car, so I just assumed (obviously incorrectly) the temperature switch worked the other way.