Potential causes of an overheated transmission: It’s not always what you think
If a transmission starts overheating, the root cause must be something to do with the transmission itself, right? Not always. The following are a few examples where the transmission was not to blame. Exhibit A: GM 6L80/90 The first overheating case comes from GM 6L80 and 6L90 transmissions equipped with a thermal bypass valve in
Diagnosing AS68RC intermittent pressure switch/linear solenoid performance codes
Intermittent pressure switch codes on vehicles with the Aisin Seiki AS68RC transmission have been very difficult to nail down to one specific cause. The two most common pressure switch codes for this transmission are P0746 clutch pressure control solenoid A or linear solenoid A performance or “Stuck Off,” which also includes pressure switch 1 mechanical
A long journey to success at New Jersey’s Wholesale Transmissions
“We’ve been family-owned since 1985,” Mike Nader says of his shop, New Jersey’s Wholesale Transmissions. Mike’s father started off as a multi-shop Cottman Transmission franchisee in the ‘80s. But when he passed away, it left his widow Georgette to, as Mike says, “pick up the pieces.” “She didn’t know anything about the transmission business,” Mike
Another needle in a haystack: Locating wiring problems
Paul Loch from Certified Transmission wrote a very good and detailed article for Transmission Digest in the March 2022 issue entitled “A Needle in a Haystack – Finding and Diagnosing Intermittent Problems.” The vehicle used for this article was a 2013 Ram 3500 6.7L equipped with a 68RFE transmission. Well worth the read. ATSG encountered
Shift Pointers: A Peculiar Problem Syndrome
An interesting scenario arose recently at Performance Transmissions, where Rick was faced with a 62TE pressure control problem in a 3.6L 2019 Dodge Grand Caravan. The Line Pressure Solenoid is a Normally Vented Solenoid designed to lower line pressure when it duty cycles as the hydraulics show in figure 1, above. The theory of operation provided
42RLE buzzing noise on initial engagement
The complaint A 2005 Jeep Wrangler equipped with the 42RLE transmission had a buzzing noise when the shift selector was moved to the drive position. The vehicle was actually brought in with a shift complaint, at which time the owner of the vehicle also said that the buzzing noise was present since he purchased the
62TE delayed forward engagement
The complaint A 2016 Dodge Journey with the 62TE transmission had a complaint of delayed forward engagement and fluid leaking out of the vent when the transmission is placed in drive only. A code P0740 “Torque Converter Clutch Malfunction” was set. The cause When the valve body cover was removed, the technician saw that the
Ford 6F35 harsh forward re-engagement after stop/start
The complaint A 2014 to 2016 Ford Escape equipped with the 6F35 transmission built on or before Feb. 26, 2016, may have a complaint of a harsh forward or reverse engagement after an active stop/start event. The Malfunction Indicator Lamp may be illuminated and diagnostic trouble code P0C27 “Auxiliary Transmission Fluid Pump Motor Current Low”
How the Ford engine stop/start system affects transmissions
2018 and later Ford Escape vehicles equipped with a 1.5 L Eco-Boost, 2.0-liter turbocharged engine or the 2L VCTi engines, and the 6F35 transmission, have an engine stop/start system. The stop/start feature can be disabled by the driver and will remain disabled after each key cycle until reactivated by the driver. Some Ford Fusion and
A mysterious shudder: Locating a problem with no fault codes
It was a dark stormy night… well, not really; it was just an ordinary Tuesday. On that ordinary Tuesday, a customer came into our store very distraught. He had been to several shops with concern of feeling a shudder while driving his vehicle uphill. None of the other shops or the Toyota dealership could give
Chrysler ZF8 generations 1 and 2 identification guide
In 2019, some Chrysler/Ram/Jeep applications that utilize the ZF8HP transmission moved to a second-generation unit with a new designation and numerous changes for better performance and durability. Gen. 1 units are classified as 8HP45, 8HP70 and 8HP90; while Gen. 2 are classified as 8HP50, 8HP75 and 8HP95. Internally, the Gen. 2 transmission had numerous hard
Photo gallery: TCRA Annual Meeting 2023
On April 13-15, one of the transmission industry’s most notable events took place, as members of the Torque Converter Rebuilders Association (TCRA) had their annual meeting. For this year, which was the 25th time this gathering has occurred, the meeting took place in Charlotte, N.C. As always, it served as an occasion for industry friends
