Yeah, i guess i'm into my cooling system today...
Anyhow, I want to simplify my underhood area. Way too much junk in there. One big thing that strike me as extra is the heater control valve. I was thinking of getting caps for the TB coolant outlet on the intake, then axing the control valve and hooking the heater straight up. That would clean the front of the engine up a lot.
Now the questions.
1-Any drawbacks to blocking off teh TB coolant outlet?
2-does the heater control valve really do anything useful. My old camaro didn't have one and the AC was cold when it worked.
3-If keeping a heater control valve is a good idea, anybody have a PN for a smaller more compact unit than the monstrosity i have now?

...ed

 

Ed,

The coolant does not necessarily have to pass through the TB. That was done to prevent throttle icing at cooler temperatures and high humidity. The coolant flow still needs to occur, so you can bypass the TB if you wish, but simply blocking the line might cause some localized overheating in the head.

You also don't necessarily need the heater control valve. ThirdGens didn't even have this valve until 1987. As long as the air dampers in the HVAC system shut properly, the AC will work effectively.

I don't know the P/N for the stock or replacement 3-way vacuum controlled valves.

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Later,
Vader
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"No matter how hard you try you can't stop us now"
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I'll admit i didn't full investigate it all, but AFAIK there are 2 inputs to the heater control valve, one from the intake through the TB junk, and the other off the intake on a regular nipple. Perhaps i am a retard and their is only one input coming from the intake.
If there are 2 holes, blocking the one off, as opposed to bypassing the TB, would just make a cleaner engine. And i'm all about not having junk in my way.
And i think i'm gonna axe the heater valve too. After all, it's a convertible, i doubt i'll have the top up and use AC much if at all anyway, and if i did need super colod AC refitting it would be no big deal (as long as i don't lose track of the vacuum line, hehehe)
...ed