Shift Pointers Archives - Transmission Digest
Shift Pointers: A 10R140 with a classic drivability complaint

A 2021 F-350 6.7L Super Duty using the 10R140 beast of a transmission recently came into Precision Auto Repair not upshifting when pulling a load only. On light throttle it would upshift, but not as high as tenth gear. Once the throttle was depressed it would downshift and no longer upshift. It displayed similar symptoms

Figure 2.
Shift Pointers: Where’s that fluid leak coming from?

A 2016 Honda CRV 2.4L (Figure 1), using a BLJA CVT 4WD transmission (Figure 2) comes in to a shop with a customer complaint of a leak. Before anyone checked fluid levels, the vehicle was hoisted up for a look. A visual inspection revealed a leak coming from between the transmission and the engine. The

Ford 8F35 maintenance tips: Planetary failure and no-pressure conditions

Our shop has had several vehicles come in with the Ford 8F35 transmission having planetary failure. Apparently, there was a run where the pinion needle bearings had a hardness problem (see Figure 1). Ford has a bulletin out (bulletin number 22-281), which provides a part number for this planetary assembly: the part number is JM5Z-7N473-C and

Figure 12.
Shift Pointers: A Chrysler 300 no-shift complaint

The case study has to do with a 2009 Chrysler 300 C 5.7L Nag1 RWD with 71,923 miles on it (see Figure 1, above). It is based on a second opinion where a customer’s instinct combined with family member’s urging to seek a second opinion saved this customer a significant amount of money. First, a

Shift Pointers: What to do when the 62TE TRS tab breaks

How frustrating it is when on a hot summer day, as you go to open a nice cold can of your drink of choice, and the tab breaks off? You are outside, away from any tools to remedy the problem quickly. It now requires a MacGyver mentality looking around at the resources available to get

Shift Pointers: Failures caused by incorrect tire sizes

For years ATSG has produced a wide range of issues related to improper tire sizes on vehicles. Even under-inflated tires have been known to cause issues. Problems such as premature failure with an active 4WD transfer case will occur with incorrect tire sizes. Additional issues include the following: As a result of some of these

Shift Pointers: Focused DTCs

On occasions when a vehicle’s computer system detects an error, it can set an array of diagnostic trouble codes. The variety and quantity of them require the ability to diagnose diagnostic codes, so it’s nice when codes set that point directly to the problem.  One interesting scenario that just recently came to us on the

Shift pointers: High-mileage transmissions and the aches and pains of age

Among the most common four speed-transmissions keeping shops busy today are the Ford 4R70E/W, the GM 4L60-E and the GM 4L80-E. In most cases, this typically equates to working on high-mileage vehicles. Aches and pains come with age and/or high mileage. In fact, when we see a person who looks beat and tattered, some may

Shift Pointers: Nissan’s no throttle response

Nissan vehicles using continuously variable transmissions (CVTs) are notorious for defaulting to a no throttle response when the vehicle is engaged into gear. There are several malfunctions that can cause this protective failsafe feature to be initiated. A brake switch (stop lamp switch) stuck on, a double-footed driver, blown or incorrect brake bulbs, and wheel

Shift Pointers: Shift rod displacement in a luxury car

When owning a luxury vehicle, one cannot be faint-hearted when the time comes to pay a repair bill. Even if you bought a used luxury car at a very good price, this doesn’t change the price of new components required to make that repair. Such was the case with Kevin at Sampson Transmission. It began

Shift pointers: Tricky sensor situations

Sometimes you’re the windshield and sometimes you’re the bug—a phrase many of us have heard and experienced. It’s inevitable. The idea is to be the windshield as much as possible. Shane from Cottman Transmissions had a helluva day but in the end, he was the windshield. In his shop he had a 2016 Explorer using

Shift Pointers: Getting the 10R80 shaft

The Ford 10R80 family of transmissions has become known for the CDF clutch cylinder sleeve moving out of position. An updated drum has been made available by Ford with a “no-walk” backing lip to prevent repeat failure. After this cylinder has been replaced, there still may be another problem still lurking in the transmission that