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Automotive Transmission Forum

Professional automotive forum for discussion of system analysis, diagnosis, and repair of vehicle transmissions, transaxles, and drivetrains. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the Classifieds Forum.

Recent Automotive Discussions in the Automotive Transmission Forum

Loud snapping noise-low speeds
02/19/2024 in the Transmission Forum
[PowerTrain: 18 Chevrolet Colorado LT 3.6L] This vehicle makes a rather loud snapping/cracking/popping noise when driving at lower speeds coming from the transfercase area. I removed the driveshaft & the noise is not from the ujoints or rear axle.If I tu...
speed sensors
02/13/2024 in the Transmission Forum
[Transmission: 05 Toyota Sienna LE 3.3L] On an 05 sienna my coworker replaced the VSS just behind the starter due to speedo not working I understand on this van the speedo is operated from the wheel speed sensors. Now the transmission shifts poorly/crazi...
Is the boost valve upgrade sleave air tight on the outside?
02/13/2024 in the Transmission Forum
I installed a boost valve sleave from Superior, and I'm thinking that the outside of the sleave isn't supposed to be air tight. Only the inside of the sleave is supposed to be air tight, right? I couldn't find any info on this.
Where's good source for Rebuilt Valve Bodies?
02/12/2024 in the Transmission Forum
[Transmission: 99 Ford Ranger XLT 3.0L] I just want to be sure that they're always rebuilt to solid pass on the vac and dyno tests. I see some outlets selling them as rebuilt when they are just used...or just jumping the zip kit or shift kit in it, and c...
RevMax 68RFE lockup issue
02/09/2024 in the Transmission Forum
[Transmission: 08 Dodge Ram 3500 Laramie 6.7L] Vehicle has newly installed RevMax 850 series performance unit w/ stock stall converter, 37" tires and 4.88 gears. Took out a BD brand performance unit w/ broken input shaft that did not exhibit this issue. ...

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