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post #1 of 3 (permalink) Old 10-26-04, 01:26 AM Thread Starter
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Air Pump?

Im on the tail end of swapping a 92 Mustang GT's engine into my 94' F-150 and I find myself a little confused.

Below the alternator on my engine (the engine itself is from the Stang, as well as the intake and such but all accessories/wiring are still the original F-150's) near the bottom is a little pump that my crappy service manual simply lists as an "air pump". It has two lines, one from a plastic canister mounted on the fendor and one that snakes its way behind the engine to a weird little setup at the rear of the heads. There it plugs into a plastic peice, which also has outlets for a line from my exhuast as well as one from some metal tubing that bolts to the rear of the heads.

My question is, what does this thing accomplish? Do I even need to hook it all up? I took a look at a friends 96 F-150 (5.8 ltr.. but its still almost exactly the same as mine.) and his doesnt have it at all. Theres just a little pulley where the pump is on my truck. I also took a look at a Mustang and it didnt have it either. My guess is this has *something* to do with emisions or somesuch but I dont like to just not use things simply because I dont "think" their important. So if anyone has any info for me I'd appreciate it. I also apologize ahead of time for my poor description. I'm not overly good at that sort of thing.
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post #2 of 3 (permalink) Old 10-26-04, 03:22 AM
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Re: Air Pump?

Yeah, sounds like emissions stuff, it pumps air into the exhaust to help burn unburnt fuel.
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post #3 of 3 (permalink) Old 10-26-04, 03:44 PM Thread Starter
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Re: Air Pump?

Ah thanks. I was thinking it was something along those lines. That settles that then.. bye bye air pump.
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