I am getting my truck into running shape again after it had been sitting for 4+ years. I took off the Edelbrock Air Cleaner and put the stock one on for emissions. However, there is a port into the front of air cleaner. I cannot remember what it is for. I cannot find any vacuum hoses or breathers that go into this port.

The truck is a 1977 F-100 2WD with a 302 Three Speed. California "71"

Does this just get blocked off, or am I missing something? I cannot find a diagram in my Haynes or Chilton that tells me what it is for. Any ideas?

 

I have three ports in the rear for the breather, air temp (I believe), and hose from the carbon canister, but I cannot figure out what this one is for. Does anyone have any ideas?

 

My 77 has the air cleaner off a 75 F100 w/ 302 and there is some sensor there with 2 wires that ran to the front of the motor coming from that spot. It's not CA so maybe that's different. Not much help for you. I've been trying to figure out how the charcoal cannister attaches to the aircleaner for mine. Is that the hole just behind the snorkel?

 

I have a 78 CA I will look tonight if no one has answered.

 

Yeah, the first hole on my fits the hose coming up from the canister, the second is for the air temp vacuum port, and the third is for the breather coming from the valve cover.

 

Thanks for the help!!! There shouldn't be much difference, hopefully. It has been so long since I have worked on this truck (it sat at my parents ranch for 4+ years) and I just cannot remember, or figure out, what goes there.

 

Thanks for verifying for me. The first hole sensor had the wires burned in a small engine fire. I still have the sensor part in that hole, but it doesn't do anything. My mechanic friend said that the 2 sensors on the front of the engine weren't needed so I never had them hooked up. One was held in place by a valve cover bolt and the other on the intake somewhere. Sorry I'm not more help.

 

No problem at all. I just don't see a sensor or anything else on my truck that goes in that location. Hopefully I didn't lose it if it is needed.

 

Any luck in seeing what it is for? If so, could you post a pic or two?

 

It is plugged on mine.



I would assume same on yours.

 

I dug through my box of parts and found the plug. I appreciate the help. Now it is off to the SMOG shop and the DMV.

 

No prob. Let me know if you need anymore pixs or help.

 

Jedd, I sent you a message about the steering column. Let me know if you didn't get it. I found one for an automatic 73-77 that I'll take 75 plus ship if you're interested.
Mike

 

This thread is over three years old and is about air cleaners. What am I missing?

 

FMC, sorry, was trying to get in touch with Jeddi03 as I'm new to the site and can't pm just yet. He was looking for a steering column and asked me how much on the one I have. Don't suppose you could help me relay it to him? I'm not sure if he is getting the word. Thanks.