Blame the Torque Converter, Part 1

Society often influences us to try to blame others for our problems. From an early age we try to place blame with friends or siblings. Our training usually continues into our school age when the guilty person is always “the other guy”. It seems only natural for this mind set to continue into the work place. This is especially true if your work place happens to be with the automatic transmission industry. The mysterious inside of a sealed torque converter is easily substituted for the “big dumb kid” in the back of the classroom. The following are examples of a torque converte r being unjustly blamed for a transmission problem.

2001 JETTA 740 code

A 2001 Volkswagen Jetta equipped with a 2.0L engine and 01M transmission was returned to a transmission shop. The transmission and torque converter had been rebuilt recently and now the vehicle had a 740 trouble code. The 740 code had been one of the many codes present when the vehicle was first brought to the transmission shop. Now that the vehicle had returned, the technician thought that something had been missed on the original rebuild of either the transmission or torque converter. The torque converter was returned to the original shop to be checked. The owner of the converter shop said when the converter was serviced the first time they found that the friction material had begun to flake off and it had been replaced as part of the rebuild process. At that time, the converter had to have a major cleaning because of metal contamination, but the friction material was the only thing replaced. Inspection on this return trip did not show any sign of problems inside the converter.

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Article No.: TCTIP-09-08
Author: Ed Lee
Total Pages: 2

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