What is this wire? It burnt threw.

[GunMan9]

I can not find the TVS anywhere for sale online, would they call it something else

 

[chengny]

Is this it?

If so - the single wire into the fuse is 16AWG.

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[GunMan9]

Yes that is it. Is the other part the EFE/DISTR TVS

 

[GunMan9]

I also do not have an ERG because it was taken off when the edelbrock 600 cfm carb was put in. Doesn't the TVS have to do with the ERG

 

[chengny]

TVS is AKA a ported vacuum switch.

This look like it?

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$20.79 at Rock Auto:

http://www.rockauto.com/catalog/raframecatalog.php?catalog=903&partnum=7P1067&a=FR903-7P1067-725985

 

[GunMan9]

Ok ya that's what I have been seeing. Just didnt know why there are 4 ports when the stock one has 3

 

[chengny]

I think this one operates the EFE valve. Like I say without an emissions code we're just guessing.

This one looks like it's in the thermostat housing - correct?

Do you have another TVS - one screwed into the intake manifold.

You need to take pictures from further out.

 

[chengny]

That's what I was wondering - 3 or 4 ports?

That 3 port is harderr to get.

 

[GunMan9]

It is right infront of the carb. I have the 5.7 V8 350

 

[GunMan9]

So a four port won't work? Could I plug the middle valve?

 

[chengny]

This is your broken valve OEM part # 3055378:

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This is what shows as GM part 33055378:

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The part number is visible on the cap and is the same as your image.



Thread Size - NPT: 1/2" - 14 Thread; Direct OE Replacement;Number of Ports: 4; Number of Hose Connectors: 4; Hose Size - Inches: 3/16"; Contents: Ported Vacuum Switch
Alternate/OEM Part Number(s): 212108, 3055378

If we are missing something, pull the vacuum hoses off the switch and post an image.

I have to agree, the TVS that you show looks like a 3 port (triangular pattern, 2 low one high) with a rear vent but the internet doesn't agree.

Oh how I hate that damn internet!!

 

[GunMan9]

Yes it is 3055378

 

[Jims86]

One of those may be a vent.

 

[GunMan9]

Ok here is another what is this for?

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[chengny]

I'm color blind, but if it's orange and you have (or did have) a TH400 transmission installed - it's the lead that goes from the switch on the gas pedal to the detent solenoid.