What is a 3 stage torque converter?
Three-stage torque converters employ three rings of turbine blades, as well as two sets of reactor or stator blades. The effect of this design is increased torque — up to five times the amount of engine output torque, in fact, when the engine is at a stall.
Can a torque converter lock in 3rd gear?
The torque converter lock on a typical 90s 4 speed automatic won’t engage unless the transmission is in the highest gear, and the throttle position is fairly low. The over drive cancel will make 3rd the highest gear and then it can lock in 3rd on most transmissions.
How does the torque converter work on a 90s car?
Lifting the throttle usually commands the transmission into the highest gear (for fuel efficiency) unless your TCM has a “sport” mode or some such that holds it in gear longer. The torque converter lock on a typical 90s 4 speed automatic won’t engage unless the transmission is in the highest gear, and the throttle position is fairly low.
Which is worse a bad torque converter or bad transmission?
When diagnosing driveline problems, one of the bigger challenges can be diagnosing a bad torque converter versus a bad transmission. The symptoms are often quite similar. Often people think that their transmission is going out, because the symptoms of a bad tour converter are so similar to the symptoms of a bad transmission.
Why does my torque converter make a noise when I drive?
Since the torque converter pump, stator and turbine spin freely without engagement during neutral or park, the noise will not be present in those settings. Accelerate slowly in drive and listen to whether the torque converter noise will get quieter as the vehicle moves forward. Place your foot on the brake with the engine in neutral and idling.
The torque converter lock on a typical 90s 4 speed automatic won’t engage unless the transmission is in the highest gear, and the throttle position is fairly low. The over drive cancel will make 3rd the highest gear and then it can lock in 3rd on most transmissions.
What kind of sound does a torque converter make?
The sound is similar to driving on deformed ‘washboard’ pavement, while shifting at low rpm in the last three transmission gears (4,5,6). Anyway, after 2000 km, I took it back to the dealer, and he test drove it, carrying the ‘Bob’ test; shifting into Sport mode during the rumble, and it would stop.
Where is the torque converter on my car?
The torque converter is spinning anytime the engine is running, but is only under load when the car is in gear either forward or reverse. As soon as you shift into Neutral, the sound goes away. The torque converter is located where the engine meets the transmission. Put your mechanic’s stethoscope in your ears, but pull the probe off of the hose.
Can a bad torque converter cause a transmission to fail?
Failures within the torque converter can cause symptoms similar to a failing transmission, so include it in a diagnosis of suspected transmission problems.