Hidden problems: Three tales of electrical issues
In this article, I will discuss some vehicles with electrical issues. These issues were previously addressed by a different shop/tech, but the improper or incomplete repair resulted in these hidden problems that would appear later. The first case was on an early 2004 Chevrolet Venture FWD, with a 4T70 transmission. This van was setting solenoid
Looking deeper: Telling apart electrical issues and parts issues
We see such a variety of transmission problems these days, and all the electronics involved today certainly have added a whole new crop of potential issues. Even though a significant part of our diagnostic process is geared towards electrical issues, there are still times when the problem is simple and not related to electronics at
Watch: CVT electric and communication codes
Find out if your transmission module is not sharing information properly. Different codes will indicate different issues within the transmission. Watch the latest video from Transtar for more information.
Diving into electrical testing and wiring with the 948TE
We had a 2014 Jeep Cherokee come into our Bellevue, Neb. facility with a transmission that would not shift. This all-wheel drive vehicle was equipped with a 3.2L engine and a 948TE nine-speed transmission. I was informed when the vehicle was dropped off that they previously brought it to a different shop for this same
The Nightmare on Oak Street: A hunt for 4L30E electrical problems
This story begins with a 4WD 1998 Honda Passport equipped with a 3.2 V6 engine and 4L30E transmission. The shift indicator in the cluster was not functioning correctly and transmission was shifting hard. The shift indicator showed ‘P’ in Park, and ‘1’ in D3, D2, or D1. The indicator didn’t light up in any other
Putting what you learn in training into practice
We all have those family members and loved ones who need our help and expertise when it comes to cars, and I am no exception. I purchased a 2001 Honda CRV AWD with a possibly bad transmission for my daughter to replace the worn-out vehicle she was driving. After determining that the transmission was indeed
Alto adds new electrical products
Alto has introduced two new electrical products. The first (pictured above) is a valve body wiring harness for GM 8L90E eight-speed transmissions (rear-wheel drive and all-wheel drive). The harness (part no. 224507) covers model years 2015-2018. The second product (pictured above) is a circuit board for BorgWarner, Audi and Volkswagen 02E (DQ250) DSG transmissions, covering
Don’t Forget to Inspect the Pins
When it comes to diagnosing vehicle issues in today’s world, so many things must be taken into consideration. You must check the integrity of all possible components that affect the subsystem you’re diagnosing. In the realm of modern automotive transmissions, those subsystems will include computer hardware, software, wiring, sometimes cabling and actuators, and the components on and in the transmission itself. I guess those old rusty bolts weren’t such a challenge after all.
