Ford 6R80 Archives - Transmission Digest
6R80 whirring noise: TCC slip or engine surge?

About a month ago, we at Certified Transmission received a 2015 Ford Expedition 4WD at the shop. It was equipped with a 3.5L Turbo V6 engine and a 6R80 transmission. The complaint read, “RPMs fluctuate up and down and there is a whirring noise.” The vehicle was brought to us by one of our wholesale

Ford 6R80 shift solenoid ‘E’ resistance change: How to tell the difference

The lower resistance and higher resistance solenoids are not interchangeable.

Look for the little details: Three transmission repair case studies

Below are three examples of trucks that came into transmission shops, yet either did not have a transmission problem, or had a simpler issue than it originally seemed. Read on for the stories. Case study 1: Chevrolet 2500 HD Our first example features a 2006 Chevrolet 2500 HD 2WD. It has 76,257 miles on the

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Breaking parts: Pressure regulator valve and bore blues

One of our ATSG members, Bob at Trans Tek, recently shared with us an experience he encountered with a 2011 GMC 3500 Mini School Bus with a Duramax diesel engine in front of a 6L90 transmission. It came in to the shop slipping, along with having no second or sixth gear. After the transmission was

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Transmission slipping in fifth gear: An elusive cause of a common problem

Sometimes, finding the cause of a complaint isn’t as straightforward as one would expect; sometimes, these causes can be very elusive.

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Troubleshooting Ford 6R80, 6R140 2-3 shift quality issues

We are all too familiar by now with the numerous band numbers on Ford 6R80 and 6R140 transmissions. We know that — unless you are programming in a new calibration code — it is best to replace a solenoid with the exact same band number as what was taken out of that position on the

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