Allison Transmission Turbine Speed Sensor Problems

Limp mode on allison 1000.

Allison transmission turbine speed sensor problems.

The computer wants to know if the transmission is working properly. Ud trucks offers allison fully automatic transmissions with new quon 8x4 8 0 litre engine for added vocational appeal. Modern allison transmissions come with a limp mode installed. Output speed sensor transmission connector connector engine speed sensor connector v01634 tps connector turbine speed sensor connector hd b.

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. There are generally two speed sensors that work in conjunction to provide accurate transmission data to the vehicle s powertrain control module. You should always assume that this isn t bogus and try and get your transmission. The first is known as the input shaft speed iss sensor.

The transmission speed sensors are used to calculate the actual gear ratio of the transmission while in use. 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. Service manuals sm2148en and sm2457en and parts catalogs pc2150en and pc2456en may. 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.

This mode is triggered by anything that could cause severe damage to the transmission including severe overheating or towing a very heavy load. 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. This article will take you through symptoms of a bad transmission speed sensor. This limp mode locks the transmission into third gear and.

Replacing turbine sensor allison 3000 series trans. P0717 input turbine speed sensor fix code p0717 input turbine speed sensor circuit no signal. Things to look out for include harsh shifting inoperable cruise control and a check engine light. This manual provides troubleshooting information for allison transmission division md hd b series transmissions.