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post #1 of 5 (permalink) Old 06-26-2011, 10:53 PM Thread Starter
 
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Do I need this?

Do I need this? Whats it for?

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post #2 of 5 (permalink) Old 06-27-2011, 06:04 AM
 
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Garage
It appears to be a vacuum switch that is operated by a signal from a heat sender....ie: allows something to open or close when the engine reaches a specific temp.......A 70's guy will know. eric



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post #3 of 5 (permalink) Old 06-27-2011, 08:50 AM
 
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Looks to me like an Idle stop solenoid. If it is, you can go either way. They're actually kind of cool, as they prevent dieseling (or help to) by allowing the throttle to come farther closed when you turn the key off.


...if that's what it is.

Cheers, Chuck

When the only tool in your toolbox is a hammer, you tend to see every problem as a nail.
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post #4 of 5 (permalink) Old 06-27-2011, 10:33 AM
 
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used vacuum switch that was part of the ignition \ emission controls between distributor vac. advance and supply. End nipple appears to be broken off. It was used on my 72 monte carlo 350 4bbl.

Last edited by pontiac; 06-27-2011 at 06:07 PM.
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post #5 of 5 (permalink) Old 06-27-2011, 11:37 AM
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There is a reason "pontiac" has that name! Orbit, this is the kind of stuff that was thrown away by the bucket load "back in the day", which makes it rare and desireable for a numbers matching restorer. Yeah, early emissions control stuff isn't the best for total performance, but if I had a Judge, I would be installing as many correct parts on it as I had. If you don't re-install, at least keep it with the car.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

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