william wixon

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hi, i was wondering if there was anyone here who knows about this stuff who
i could ask about plumbing a vacuum actuated "wolf whistle" to a brand new
2005 3.0 Ford Ranger. i'm concerned that with all the computer controls a
intermittent vacuum "leak" would weak havoc with the computer. i guess i
was figuring on somehow (maybe tapping a hole) tapping directly into the
intake manifold. or, maybe if i could, most likely easier, tap into some
other strong local (local to the intake manifold) vacuum source.

b.w.

the other kevin in san diego

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The likelyhood of a vacuum leak on a new vehicle is pretty slim. Why
bother with it at all? Just drive it or if you really need to see the
vacuum condition, buy a vacuum gauge...

samb

Sorry - Don't know the answer but at least I read the question!
SamB

jimbo

If you were planning on tapping a hole, I would think you could try it
out and just put a screw in the hole if it started acting strangely.
Maybe someone could speak to the computer side of things. I would
think the computer would compensate for a vacuum leak but you really
wouldn't have to worry about it screwing with the computer as much as
the engine by the computer making it over compensate.

william wixon

well, thanks Sam, that's something! :-)

b.w.

pete

I guess the question is how big a leak does the whistle cause? Everytime you
activated the whistle the computer would see a lean condition and try to
compensate i.e.. add fuel by opening the injectors. Then when you turned off
the whistle the computer would see a rich condition and again try to
compensate by closing the injectors. A big leak would cause a bigger lean
condition and bigger swing between lean and rich. This could throw a code it
could reduce the life of the catalytic converter. It all depends on how much
and how often.