Why am I having trouble shifting gears?

By All Auto Staff - June 5th, 2017 in FAQ

The technicians at All-Automatic Transmissions understand that problems with your vehicle’s transmission can often be resolved with adjustments or a minor repair. In fact, a simple adjustment can be done without even removing the transmission from the vehicle. When a late model transmission is failing to shift correctly, it can often be due to a faulty sensor receiving incorrect signals from the computer. Additionally shifting problems can arise when a transmission is not responding to the computer correctly due to a bad connection or a defective solenoid pack. These types of repairs can be fixed without having to remove the transmission from the vehicle saving you a considerable amount of money when compared to a complete overhaul.

Noncomputer Controlled Transmissions:

In situations where a noncomputer-controlled transmission is either shifting too early or too late, the throttle cable may need to be adjusted. Seldom will a throttle cable go out of adjustment on its own or because of wear and tear, but rather most misadjustments are a result of other repair work or due to damage from an accident. When a vacuum modulator is used in lieu of a throttle cable, an adjustment screw can be used to correct a transmission problem. When a vehicle uses a modulator instead of a throttle cable it is crucial that there be no vacuum leaks and the engine is performing at peak efficiency. The vacuum conditions of an engine are very sensitive and significantly impact the performance of an engine. Our technicians will quite often use a vacuum gauge when diagnosing a vehicle’s performance problem and state of tune. Many of the problems a vehicle’s transmission may present will disappear after a thorough tune-up or other engine performance related repairs are completed.

Older Model Vehicles:

Transmissions in older model vehicles can experience what is called “slipping”. Slipping is a condition that results in an engine racing briefly when shifting from one gear to another. Often times a transmission band adjustment is all that is required to correct slipping conditions.
What is causing the red oil to leak underneath my vehicle?

Reseal Jobs:

The spotting of red oil on the ground underneath your vehicle is usually indicative of your transmission needing a reseal job. Reseal jobs are done in order to repair external transmission fluid leaks. Checking for leaks involves one of our technicians placing your vehicle on a rack to examine the transmission for signs of oil leaks. If while examining your vehicle our technician notices leaks near any of the external gaskets or seals and your transmission is otherwise performing well, our recommendation will usually be to have the transmission be resealed. While most external seals can be replaced without needing to remove the transmission, a front seal replacement requires the removal of the transmission in order to gain access to it, resulting in a more expensive transmission repair.

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