Help! Name that part!

bizbee did pass the time by typing:

It is operated by the coolant temperature. Your looking at a thermal switch used by the vac system to determine when the engine is hot. I forget exactly what it hooks to. Vacuume comes from a port on the carb.

On Wed, 23 Jun 2004 17:44:33 -0500 in , "DougW" graced the world with this thought:

Yeah, but ? I need to replace it, I don't know what to ask for... lol My damn Chilton's doesn't seem to have any reference to it. Thermal vacuum valve? Thermal vacuum switch? It looks like it costs all of about a dollar. It got replaced at another point, but I was having the carb rebuilt at the time, so didn't do it myself... but I remember the guy showing me where it cracked, and this one is broken in the same place--naturally.

It's called a CTO valve. An inline one too by the sounds of your description...

My 86 has a waterjacket in the intake manifold, so my CTO is screwed in there.

Mike

bizbee wrote:

bizbee did pass the time by typing:

oddly enough, Thermal Vacuum Switch.

I "think" it's this one. Make sure before you order it though.

napaonline.com Echlin Fuel System Ported Vacuum Switch Usually ships in 24 hours. CRB21000 $ 22.49 Color Code: Red & 3 Ports, 222-228 Degrees, w/ OEM # 5358881

On Wed, 23 Jun 2004 18:47:08 -0500 in , "DougW" graced the world with this thought:

thanks a lot guys

On Wed, 23 Jun 2004 16:07:46 -0700 in , L.W.(ßill) Hughes III graced the world with this thought:

Mine looks a little different, but that's indeed the one, the lines go where you say. Unfortunately, I'll need it, but thanks.

That is a CTO valve.

Mike

bizbee wrote:

On Wed, 23 Jun 2004 22:04:26 -0400 in , Mike Romain graced the world with this thought:

Yeah, that's the booger, alright. I'm hoping I can get one nearby, I doubt it'll be too hard, the thing is built like a piece of shit; they must break all the time.

On Wed, 23 Jun 2004 16:07:46 -0700 in , L.W.(ßill) Hughes III graced the world with this thought:

Well, at this point, I believe I'll just ignore the problem... $50 at the dealer for something that'll break before my next smog check anyway. I'll let them replace it, if they notice. He seems to run fine with the crack, anyway, so what the hell.

The crack will/could affect the timing vacuum. Maybe use some RTV or JB weld to seal it up or just take it out of the system and run the vacuum lines direct and put up with a bit of chugging when it is cold. By the time you have heat inside, the valve is open anyway.

Mike

Actually, that is a heat activated vacuum switch. There is a smog part somewhere that kicks into action when the heat rises to a certain level. The vacuum source is the intake manifold, and there is some kind of load somewhere that turns on, or off, when the heat rises.

That's easy, take it off and use your other car to go to the store for another one.

Well, my CJ is the primary vehicle I prefer to drive (hands down), but it is nowhere near being my primary vehicle.