What is this?
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Senior User
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What is this?
1975 F250, 460, A/T Camper special, 2WD
It mounts on the firewall in the engine bay, has one wire connector and a vacuum hose that connects to a fitting on the top/rear of the intake manifold - behind the carb.
What is it?
It mounts on the firewall in the engine bay, has one wire connector and a vacuum hose that connects to a fitting on the top/rear of the intake manifold - behind the carb.
What is it?
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
Does your dash have the "LOW FUEL ECONOMY" light on the inst panel?
That's the switch that activates it.
It was a '75 only option that turns the light on whenever it detects low manifold vacuum.
Kinda redundant on a vehicle that gets 8-10 mpg anyway.
That's the switch that activates it.
It was a '75 only option that turns the light on whenever it detects low manifold vacuum.
Kinda redundant on a vehicle that gets 8-10 mpg anyway.
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I never would have thought of that.
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Actually, is this required for any functionality of the vehicle? If I wanted to cap the vacuum port that this connected to, will I create any issues - other than the light not coming on when I am getting "low fuel ecomony"?
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
This was an option, capping the vacuum port will only disable the light, it won't creat any other issues.
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