Allison Transmission Turbine Speed Sensor Problems

Service manuals sm2148en and sm2457en and parts catalogs pc2150en and pc2456en may.

Allison transmission turbine speed sensor problems.

This mode is triggered by anything that could cause severe damage to the transmission including severe overheating or towing a very heavy load. Output speed sensor transmission connector connector engine speed sensor connector v01634 tps connector turbine speed sensor connector hd b. For the smooth operation of the automatic transmission allison it is necessary to comply with the requirements of the manufacturer in time to make maintenance and troubleshoot any problems. This manual provides troubleshooting information for allison transmission division md hd b series transmissions.

This article will take you through symptoms of a bad transmission speed sensor. You should always assume that this isn t bogus and try and get your transmission. Things to look out for include harsh shifting inoperable cruise control and a check engine light. This limp mode locks the transmission into third gear and.

Ud trucks has launched a version of its popular quon 8x4 heavy duty model and for the first time is offering the allison 3200 series automatic transmission coupled to its 8 0 litre engine. Ud trucks offers allison fully automatic transmissions with new quon 8x4 8 0 litre engine for added vocational appeal. Limp mode on allison 1000. Typical 4000 mh series transmission turbine speed sensor mounting pad input speed sensor nameplate fill tube and dipstick output speed sensor feedthrough harness connector v06342 cooler ports main pressure tap mounting pad both sides cooler ports feedthrough harness connector breather breather.

Modern allison transmissions come with a limp mode installed. If you have a p0717 input turbine speed sensor circuit no signal trouble code this post will help you understand what it is and how to fix it. The electronic control system of the automatic transmission allison processes information from sensors and other vehicle systems and sends signals to. The transmission speed sensors are used to calculate the actual gear ratio of the transmission while in use.

The computer wants to know if the transmission is working properly. The first is known as the input shaft speed iss sensor. There are generally two speed sensors that work in conjunction to provide accurate transmission data to the vehicle s powertrain control module. P0717 input turbine speed sensor fix code p0717 input turbine speed sensor circuit no signal.