2013年9月9日 · Six months and the same thing has happened in exactly the same way - first symptom was reverse not working; followed by an apparent loss of 2 and 4 when D was selected (due to what turns out to be another broken 2-4 band).

2020年4月23日 · I did a pressure test with the oil gauge I had and maxed it out over 200psi in reverse. The thing shifts great now in all gears just no reverse, I can feel the trans shift into reverse with a gentle bump and when off the ground the …

2013年5月1日 · It is not too often that you see a no-reverse concern caused by a bad solenoid or by a valve-body problem that does not affect any forward upshifts. Generally you’ll see this only on valve bodies that have a reverse-inhibit function, such as the 5L40 or JF506.

There should be no oil or air leak-ing around the shaft and bushings (Figure 5). You can also check the stator support bushings with a vacuum test stand: • Clean and dry the shaft and the stator support. • Plug the hole in the stator support. • Apply a vacuum to the tip of the input shaft. Testing with vacuum

2015年12月7日 · On a 4F27E that most commonly would be under the driver end cover plate, the stub off back cover wears heavily at seal rings, grooves, and bushings to lose oil pressure to reverse and direct clutches (hint:3rd uses the direct to work). Then pressure drops pretty much everywhere and nothing works.

2009年1月22日 · I'm troubleshooting problems with 4F27E auto trans, it doesn't reverse sometimes and mostly it engages reverse very harshly (like someone hit my car) only when accelerator is pressed or after some time.

2004年6月1日 · Explore the unique solenoid configuration and functionality of the 4F27E transmission, offering a different approach to shifting and TCC apply.

2016年2月16日 · "Here is my experience with the 4F27E ATX. It started slipping out of 4th and progressed to not going into 4th at all, and slipping out of 3rd gear. A week later I lost reverse completely.

The differential is one more problematic component of “old” units. Ford updated the differential several times for different cars and now differentials of the 4F27E vary in quantity of “teeth”. Rubber-covered pistons (Reverse, Forward, Low/Reverse) are the spare parts of second priority.

2023年10月24日 · Despite its durability, the 4F27E transmission is not immune to problems. Common issues include slipping gears, hard shifting, and harsh engagement. These issues can be caused by a number of factors, including low transmission fluid levels, worn or damaged components, and improper installation.