Parts identity

[WmWatt]

You can look up the silver box on the side of the air filter housing on the Internet under "Ford pulse air system".

[Movin]

Are you still looking for air injection, there is a lot of service info

[jbuck1975]

It's not listed in that picture

89 Festiva. carby. needs repairs!!

[Movin]

[jbuck1975]

that still doesn't answer why you're asking these questions... is the car not running right?

Nope. All kinds of problems. But that's for another day.
Reason I ask about this part is because I remember when I took it off one day. It was all gunked up didn't know what it does.

89 Festiva. carby. needs repairs!!

[jbuck1975]

Texan..whats icing? no offense we are jealous !

Lol. That was funny but true

89 Festiva. carby. needs repairs!!

[Movin]

Texan..whats icing? no offense we are jealous !

[FestYboy]

that still doesn't answer why you're asking these questions... is the car not running right?

[jbuck1975]

I found in the Haynes book it's called Air Control Valve.

89 Festiva. carby. needs repairs!!

[KingFish]

Ok, so Im subscribing to this thread now. I had a 88 B2200 with similar system.

[FestYboy]

ok, as air passes through the carb, there's a pressure drop. ALSO there's a temp drop BECAUSE of the pressure drop. the temp drop can be low enough to have ice condense onto and IN the carb at the venturi which can cause the fuel to stop flowing and the car will stall.

the "vac" line feeds to a thermostatic valve under the filter housing.

[jbuck1975]

What is "ice the carb"? Where does the vac line connect to.

89 Festiva. carby. needs repairs!!

[FestYboy]

OOOHH!! that's your warm air valve. that uses heated air off the exhaust manifold to pre-heat the intake air so that you don't ice the carb in cold weather. there should be a vac line attached to it and the valve should move freely with your finger. if there's something blocking it, remove it now.

[jbuck1975]

Just trying to learn what different parts are and do.
I know the round thingy that is on the front of it, is all clogged up with gunk. Don't know what it is though. Look like it should open and close.

89 Festiva. carby. needs repairs!!

[FestYboy]

the rear hose should pass air freely. it feeds o2 to the rear half of the cat. the front hose should also flow freely. it allows the exhaust pulses to actuate on a diaphram in the box and pulse o2 into the other tube. i'll have to look up how to test the PAIR unit, but i want to say that it's not something you should worry about at the moment.

what is the engine doing that is making you suspect the intake/PAIR system?