Introduced in 2011 in the Jeep Grand Cherokee WK2 series and Dodge Durango vehicles and continuing into 2019, there are a lot of these units on the roads. Magna Powertrain designed and produced the 3023 and 3010 transfer cases. The 3010 series is a single speed active transfer case (no low range) called Quadra-Trac Active on Demand, which is standard on the SRT8 models. The 3023 is a two-speed active transfer case electronically controlled by computer that requires no intervention on the driver’s part. There is a low range mode for rock crawling and other off-road activities and should never be used on dry pavement. All of these transfer cases require that all four tires be of equal tire size and pressure. Mismatched tires will quickly damage the transfer case, set codes, and create a diagnostic nightmare. Before working on any of the vehicles measure your tire sizes and pressures. They must be within 1/4” to operate correctly.
Inside the Straight Line Transmissions Inc. shop in Greenbrier, Arkansas, you will find four bays and five lifts, and Caleb Emberson is about to add a sixth. It’s impressive growth from the one-man transmission operation that Caleb bootstrapped six and a half years ago.
Anyone who’s ever taken on a large home remodel knows the time, stress, money, unforeseen challenges and people management that comes with the new look. The amount of time spent planning, strategizing and anticipating simply cannot account for the mold that it turns out was under the floor or the delayed shipping on that tile you picked out, or the endless humidity that prevents the wallpaper from sticking.
Critical Wear Areas & Vacuum Test Locations
A major rule in selling is to decide what you want to be and stick to it. As in most other things you have a choice, but you really need to choose wisely because this choice may be the one that shapes your entire future in the auto repair business.
In This Issue
Mazda 6 – AW6A-EL: Stuck in High Gear Failsafe
Mercedes Benz M Class: Transmission in Limp Mode
GM 8L90: Elimination of the #7 Checkball
Not often do we get the opportunity to work with a tech that is having issues with a transmission in a hybrid vehicle. Not too long ago, Gerald Campbell had the chance to do just that with Carlos Costa from Transmission Technology. He had a 2012 Kia Optima 2.4L Hybrid using an A6MF2H transmission. There is no torque converter in this transmission. It does have an “engine clutch” and an “electrical motor” that sits in the area where the torque converter would be (Figure 1). The vehicle came into the shop with a “Stall on Engagement” complaint with repeated “Engine Clutch” burn out. In fact, when the trans was removed and disassembled, the engine clutch was smoked, and the clutch plates frozen/welded together.
“Quality is the ante to play in this industry, so just providing quality products doesn’t differentiate us,” said Jim Young, Director of Systems at ETE REMAN. “Where we stand out is the customer relationship. In reality, that’s how ETE became what it is.
Acouple of months ago we had a customer come into our location with a 2006 Kia Spectra equipped with the 2.0L engine and an A4CF2 transmission. The customer’s concern was that the vehicle would not shift at times. I started the evaluation by checking all the fluids, doing a visual inspection, and conducting a battery and charging system test with the Midtronics analyzer, and everything checked out good. I then moved on to connecting the scan tool to the vehicle and checking all modules for DTCs; the only one that came back was a P0748 (linear solenoid) electrical problem. There was no freeze frame data stored; it probably wouldn’t have helped me with this issue, but I wanted to see if it would at least show the speed or temperature at which the code set. From the customer’s description it sounded like an intermittent issue.
On the one hand, manual transmissions have slowly become less available as automatics, CVTs and DCTs have been adopted in response to changing customer preferences and fuel economy requirements. That said, the venerable third pedal is still available for passenger cars both domestically and on a number of import nameplates. One notable standby missing a manual shift option for 2020 is the Corvette. Wow!