A malfunctioning valve.    From Wordnet, Princeton University. 

Noun : a malfunction of the liver; the malfunction of a rocket.    From Dictionary.com. 

"Rupert Murdoch said that our traditional model is 'malfunctioning' - a classic understatement," Montgomery told today's.    From Wordnik.com.  [Adrian Monck] Reference

They believe the monitor was simply malfunctioning, which is a common problem underground.    From Wordnik.com.  [NPR Topics: News] Reference

Of course it was the monitor that was malfunctioning, which is an iffy thing to think about as one trudges back to bed and sleep.    From Wordnik.com.  [say la vee] Reference

The first was having that other robot carry him to eliminate his heat trail, and the second was being identified as a malfunctioning robot.    From Wordnik.com.  [Perihilion]

Zwelinzima Vavi on the "malfunctioning" of the tripartite alliance.    From Wordnik.com.  [ANC Daily News Briefing] Reference

Is NASA's radio "malfunctioning" in this way, perhaps?.    From Wordnik.com.  [Yahoo! News: Business - Opinion] Reference

What kind of malfunctioning brain sputters to these conclusions?.    From Wordnik.com.  [NewsBusters.org - Exposing Liberal Media Bias] Reference

Another question is, when Edward started "malfunctioning," why didn't his boss, Mavis.    From Wordnik.com. Reference

"malfunctioning" to which its constituent subjects are prone.    From Wordnik.com.  [Eurozine articles] Reference

"malfunctioning," ballots slyly misdesigned, and other measures meant to benefit McBush's party.    From Wordnik.com.  [The BRAD BLOG] Reference

"malfunctioning" and likely to change to a fee-based system within a year, CNN reported Thursday.    From Wordnik.com.  [Latest News - UPI.com] Reference

"malfunctioning" newspaper business had to change and the company planned to start charging readers accessing content on its websites.    From Wordnik.com.  [northernstar.com.au: The Northern Star] Reference

For E.G. The Parachutist's ripcord is malfunctioning.    From Wordnik.com.  [The Parachutist In Love] Reference

• Determine whether the thermostat is malfunctioning.    From Wordnik.com.  [Protect Your Investment: Furnace] Reference

There was no control over the spell because of the malfunctioning device.    From Wordnik.com.  [Arcana Magi - c.26: Science versus Magic] Reference

Try viewing them as whole people, not merely the containers of malfunctioning parts?.    From Wordnik.com.  [A Prescription For Healing] Reference

Both are menaced by the threat of malfunctioning machinery and falling heavy objects.    From Wordnik.com.  [America's Deadliest Jobs] Reference

Check all baby equipment frequently for loose or broken parts or malfunctioning hardware.    From Wordnik.com.  [Baby-proofing the baby’s room] Reference

He explained that members often get sued for fires resulting from malfunctioning lighters.    From Wordnik.com.  [Lighter makers want mandatory standard] Reference

“The de-paralyzer is malfunctioning and Lyn is going to die if I don't shut this down.”.    From Wordnik.com.  [Arcana Magi - c.26: Science versus Magic] Reference

In 1971, the carmaker recalled 6.7 million vehicles because of a malfunctioning engine throttle.    From Wordnik.com.  [Small Change For Saturn] Reference

A malfunctioning microwave sparked a fire at a Centreville townhouse that killed a dog, WTOP reports.    From Wordnik.com.  [Microwave sparks fire, kills dog] Reference

And, of course, why they were pulled over, was it a malfunctioning signal, was it a tag that was stolen?.    From Wordnik.com.  [CNN Transcript Nov 12, 2006] Reference

You ignore a malfunctioning public-health-care system with months of waiting time for routine operations.    From Wordnik.com.  [MAIL CALL: MAKING THE TOP 10] Reference

Other culprits can cause the same problem, including a stuck cable or linkage or malfunctioning throttle body.    From Wordnik.com.  [Putting a car in Neutral might save your life] Reference

Mom looks down at her hands and frowns, perhaps wondering if malfunctioning blinkers have any special significance.    From Wordnik.com.  [Angels Carry the Sun excerpt: Chapter One, In the Woods] Reference

In the meanwhile, what kind of experience (s) have you had with manufacturers or retailers for malfunctioning appliances?.    From Wordnik.com.  [Customer calls major appliance maker, gets free parts for out-of-warranty broken refrigerator] Reference

These patients are oddball Oedipuses and calamitous Buster Keatons, inescapably reminding us of our own malfunctioning humanity.    From Wordnik.com.  [A Tragicomic Variety Show] Reference

These ranged from misaligned panels and malfunctioning parts, to major issues such as transmissions that would not shift correctly.    From Wordnik.com.  [The Detroit 3 - What happened and where they stand] Reference

A persistent burning smell coming from an appliance, room, or area can indicate that the appliance is overheating or malfunctioning.    From Wordnik.com.  [Is your house wired for fire? Check these warning signs.] Reference

An international team of researchers transferred into his cells a fully working version of the gene to replace the malfunctioning one.    From Wordnik.com.  [Gene Therapy Prevails in Case of Deadly Blood Disorder] Reference

Optogenetics could someday lead to implantable brain devices that correct malfunctioning circuits by zapping them with pulses of light.    From Wordnik.com.  [The Light Fantastic] Reference

We still do have a system of governance, albeit a malfunctioning one whose impairment owes much to the loss of a mature political life.    From Wordnik.com.  [Michael Brenner: America's Defunct Political System] Reference

Indeed, the pain imposed by a dangerous credit product is even more insidious than that inflicted by a malfunctioning kitchen appliance.    From Wordnik.com.  [David M. Abromowitz: Shirley Sherrod: Beyond the Media Circus, Lessons for Economic Progress] Reference