Allison transmission problems8/28/2023 ![]() ![]() You would want a seamless and smooth shift even at low throttle input, so if your Allison transmission is harshly shifting from one gear to another even at high throttle then there is definitely a problem. Why is solenoid failure a problem with Allison transmissions? The entire assembly must be removed and rebuilt to fix this problem. Normally this sound means that the bushings with the transmission need to be replaced as it might be fractured. What is the solution to this Allison transmission problem? You will hear noises while driving and will be very unpleasant to your ears which can be taken as a sign that the transmission is having some bushing related problem. What signs are shown by this Allison transmission problem? The bushing failure also can cause shifting difficulty with the transmission. The babbitt material used is notoriously of poor longevity. The Allison 1000’s bushings are made from a weak babbitt material from the OEM. Why is poor longevity of bushings a problem with Allison transmissions? Also in other cases it has been seen that oil pump can be removed and rebuilt to solve this issue. Usually the transmission oil pump is worn out and needs to be replaced to solve this problem. As this is a shifting failure, only while driving at the set speed and rpm you will notice this problem. While driving you will surely notice the shifting difficulty and in worst case complete failure for this problem. This will mainly affect the shifting performance of the vehicle. The Allison 1000 Transmission Oil Pump is generally reliable, but begins to lose efficiency very early in life and it’s struggle to produce pressure quickly begins to deteriorate as it ages. Why is oil pump inefficiency a problem with Allison transmissions? The valve bodies which are seized should be replaced with the new one and you will instantly notice the shifting to be improved. Signs of a bad valve body present as sloppier shifts than when the truck was new, or you could notice being quick to downshift under load. Why is shift valve body breakage a problem with Allison transmissions?Īllison shift valves are notorious to seizure or breaking and they will cause problems during shifting speed while driving. In the worst case the entire assembly needs to be replaced if the state of the torque converter is beyond repair. If the clutch of the torque converter is worn out then you need to replace it or else the stator might be broken which also might need replacing. There will be specific error codes shown from the diagnostic tool if the torque converter stator has been broken or completely failed. If you are not getting the desired response from your torque converter when you release the brake and press the throttle pedal then you are most definitely experiencing torque converter stator problems. Differential gear failure Why is torque converter stator failure a problem with Allison transmissions?.Most of the common problems with Allison transmission are: What are the common problems with Allison transmission? However, there are many problems with Allison transmissions and we’ll tell you how you can solve them. In this brief guide, we are going to provide you with the common Allison transmission problems and what are the solutions to these problems.Īllison Transmissions are heavy-duty automatic transmissions and have a global reputation for quality, reliability and durability.
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