Showing posts with label bucking. Show all posts
Showing posts with label bucking. Show all posts

Thursday, 21 November 2013

Bucking the pumpkin status quo

Halloween has always been a big deal at our house. Growing up, pumpkin carving was second only to trick-or-treating on the Halloween activity spectrum. With three siblings running around wielding knives, we did our best to strike a careful balance between carving pumpkin Picassos and keeping all of our fingers. The finished products weren’t much to look at, but they were always worthy of display on the front porch. But that was then.

Nowadays, the Jack-o’-Lantern game has been elevated considerably. Pumpkins we thought were awesome a few years ago look like mangled gourds today. With all the patterns, stencils, tools, and kits available, just about anyone can become a pumpkin Da Vinci.

So, how’d we get here? When was it that someone said, “Hey, can we move Jack-o’-Lanterns beyond the triangle eyes already?” Well, kudos to them. I’d dare say the world is a more creative place because of that question.

Here at Instructure, we’re never satisfied with the status quo. We like to challenge established practices as often as we can. The area I focus most on is Customer Success. Here are a few things we’re doing for our customers to “think outside the triangle eye.”

Tier One Support - a new approach
Most industry tier 1 support options are on a per-incident basis. The more bugs or problems they put into the software, the more they get paid to support it, but that just didn’t feel right to us. Our tier one support offering is one fixed price and we’ll answer every phone call, email, chat, or ticket you throw at us. We’re willing to bear the risk so you can focus on teaching and learning, something we’re passionate about.

And in case you’re wondering what the quality is like, in a recent survey our end users gave us a 94% support satisfaction rating. While we’d love to have 100%, we hope you agree that 94% is incredible and shows that we put our users first.

When the unthinkable happens
Recently a Canvas customer created hundreds of courses and had students submit assignments within those courses. When the institution determined they had the wrong content in the courses and had created and enrolled the students in all new courses, we had to find a way to quickly move all the assignment submissions over. The old model would take many weeks and involve a costly project. Instead, we concentrated our staff resources to help move assignment submissions to the new courses before students got confused about what happened.

Customer Success Managers - a new breed
That’s kind of a silly name, but the name describes exactly what they do. They’re here to make Canvas institutions more successful. Tell them your goals and they’ll help you make them a reality.

Ultimately we want everyone to have the best possible experience with Canvas. We think that means constantly upping our game and getting better. Now please excuse me while I get back to carving my pumpkin replica of the Taj Mahal.

Keep learning,
Mitch

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Monday, 22 July 2013

Culprit in bucking SUV may be sensor


By Brad Bergholdt

Published: Saturday, July 13, 2013, 12:01 a.m.
Updated 16 hours ago

Q: I wonder if you can help me figure out why my Chevrolet Suburban has begun to buck sharply at times while driving. It seems to happen at a specific point when I'm going up certain hills. It happens only for an instant, then it's fine again. Ideas? I'm pretty good at working on things, but this has me baffled.

— Harvey Logan

A: This is a tough one, without being there and running some tests. You didn't mention the “service engine soon” light illuminating, so I'll assume the fault occurs too briefly for the onboard diagnostic system to catch it, or it's a pre-1996 model with less smarts.

Your clear description of the symptom makes me wonder if your throttle position sensor could have a glitch. This gadget is attached to the passenger side of your engine's throttle body and sends the engine computer a varying voltage signal that's proportional to throttle opening. With time and mileage, these sensors can become scratchy.

As you open the throttle, the signal voltage is supposed to rise smoothly between about 0.5 and 4.5 volts. Should a brief voltage drop-out occur as the sensor reaches a certain point of travel, the engine computer thinks you jumped off the throttle and cuts fuel injection commands, causing an abrupt power loss, almost as if someone cycled the ignition switch. This sensor is also important for transmission control in 1993 GM SUVs and up, so odd things can happen with shifting and torque converter clutch operation (1981 and up) as well.

Here's a trick that can help when a sensor is suspected of being faulty — unplug it. Modern vehicles are very smart and can cook up a substitute reading for many sensors if the part fails completely or is deemed incompetent.

Unplugging the throttle position sensor is easy, but please do so with the engine off and cold. Upon startup, you'll be greeted by an illuminated “service engine soon” light, but don't worry — you engineered this. Try driving the Suburban in a variety of modes and see if the bucking subsides. Don't expect the engine to run perfectly. Transmission shifting may be a little odd, as you're substituting one problem for another, looking for a difference.

If the bucking stops occurring, renewal of the sensor should fix the problem, although I'd check carefully for an erratic voltage signal first to be sure. If your sensor has elongated mounting screw holes, the replacement part will require a simple adjustment. If the bucking continues, or you're not sure of these procedures, it's time to make an appointment with a sharp technician to get to the bottom of this. Be sure to tell him/her that the diagnostic trouble code in memory, if it's the only one present, was a result of your tinkering.

Brad Bergholdt is an automotive technology instructor at Evergreen Valley College in San Jose, Calif. Readers may send him email at under-the-hood@earthlink.net; he cannot make personal replies.

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