Contour Enthusiasts Group Archives Forums General Troubleshooting howl sound ?

wile out working on my 96 se
i was under the hood and opend the throttle and once in awile ill get its loud howl sound like a air horn out the intake ..

and the car stumbles a little when given gas little quicker then normal almos tlike its misfireing ,
as well as a gurgle / pop sound out the intake snorkle

any one have some ideas ?

thanks
Scot

The moose is loose! The howling your hearing in the intake is called moosing. At certian low load, low rpm conditions the airflow in the intake and to the IAC valve form a resonance and produce that sound. There are two real fixes. One is to buy the Mr. Moose pipe, which replaces the original IAC tube from the intake tubing to the IAC with a bellowed hose, which breakes up the resonance.

Or, the better fix, especially if your car is MTX-75 (stick) equipped, is the throttle hang fix. This gets rid of the moosing, and cures the throttle from haning at one rpm when revved. You really notice this on a stick car, but if you tend to spend up the lift for a shift in an ATX car, you'll notice it too. Either mtx or atx, its an easy fix, buy a copper pipe cap, 1/2 inch, drill a hole in it, and put it in the IAC tubing. Check out the FAQ on the contour.org homepage.

oh okay yes iv read about that wasent sure if thats what it was.
simple enuf to fix .. so its just annoying and will cause no harm ? will that solve the low rpm stumble as well ?

thanks for your help !
Scot

Probably won't touch the low rpm stumble. You might wanna clear that up first, before doing that fix. Start with the simple stuff, plugs, wires, fuel system cleaner, fuel filter. Check to see if the air filter is dirty. Might be the MAF sensor needs cleaning. Hows the gas mileage, top end power, and cruising feel?

i got brand new plugs in the car NGK but the cars running so rich they are black as can be

new wires , MAF been cleaned , put lucas in the gas and used a good carbon cleaner

but ill try the fix and let ya know how it works out

Thanks

The idle stumble may be helped with a throttle body cleaning and i recommend it at the same time you do the throttle hang fix.

yes i had done a TB cleaning a few days ago 1st thing i did.
well i put in the copper plug with the said hole size and so far so good seems to be working ..

as for my stumbleing long story short,
i got a custom made A/F mixture dial and the guy who had the car between my dad owning it and then me owning it .. had messed with the wires had them back wards so the car was flooding its self ..

now fixed and seems to be gone of the howl as well
thanks guys !

let me know how that goes for ya... because i did the TH fix and then got 15MPG on my next tank of gas

http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=trouble&Number=1135155&page=0&view=collapsed&sb=5&o=186&fpart=1

UPDATE ::

okay well i did the moose TH fix and it worked fine but i get [censored] gas mileage ...

on top of this i also have bad back fire out the intake ..
i rev the car and let off and BANG ! and if i rev and down shift i get it as im shifting ...

its loud and i dont knwo whats causeing it ...
any ideas ? is this bad or harmfull ?
fixes ?

thanks