Q: Transmission will not go into gear when warmed up

asked by on January 07, 2017

I put Lucas in the transmission because it was low on transmission fluid and was slipping in over drive then it stopped working at all after I put Lucas in it but when I first start it will go into gear and work fine until I get up the street then lose all gears how can I fix this

My car has 268000 miles.
My car has an automatic transmission.

Car is hard to shift Inspection $79.99 - $89.99 Get a Quote

Hello. From what you describe it would appear that your vehicle may be experiencing some sort of potentially serious transmission issue. If the transmission was having issues prior to mixing in the additive it may be possible that doing so exasperated the problems. Regardless of any additives, however, a transmission that does not shift properly can be caused by a few different things. A few common causes are low or dirty transmission fluid, or faulty shift solenoids. The transmission uses fluid pressure to shift the gears, and does so using electronic solenoids. If there is an issue with either of these the vehicle may experience problems shifting or transferring power to the wheels. If these are not the problem then it could be possible that the transmission is having internal faults, perhaps a worn torque converter, or transmission gears, inside of the transmission. As issues like these can sometimes be difficult to diagnose, if you are unsure, I would recommend having a professional technician, such as one from YourMechanic, visit your location to diagnose what may be causing your issues.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

42rle transmission driveshaft have different part numbers.

The best thing to do is cross reference the part number with the dealership and the parts store. Keep in mind, the part number on your jeep is from the dealership and not a local parts store. So if you...

The shifter is stuck in the neutral position and I can't turn off the car.

Your shifter has three main components. The shift lever itself, the shift cable and the transmission lever that is part of the transmission. Any of these three components could be jammed. The best course of action is to separate them...

Car jumps into second gear

Hello. It very well can be that solenoid, but that is not too common. Many times this is caused by bad engine or transmission mounts. If they fail, the engine and transmission can move and cause this jump. Since the...

Transmission only is in 1st and reverse.

Hi there. Today's modern automatic transmissions are much more complex than in years past. Because of this, your shifting issue may be caused by several individual internal components such as the ring gear, central gear, or even the torque converter....

Bad idling after coolant temp sensor replacement

If you have a bad knock sensor, then the engine timing may be going too low and causing the low rough idle. If the scanner gives a code, then have it diagnosed and fixed. A vacuum leak will also cause...

No gears in the transmission. I have a 545RFE transmission.

Hi there. First check the transmission fluid and make sure that it's full and red in color. Then check the harness to the transmission shifter position sensor and see if it's connected. There is a pressure relief valve in the...

high rpm when starting car, then idles very rough. Also lack of power accelerating at times while driving

These codes all point to the operation of the throttle position sensor. The throttle position sensor is a sensor used to monitor the throttle position relative to your foot on the gas pedal. The sensor is usually located on the...

Hearing noise form tires when turning

This is an issue that comes up often on this vehicle. Most of the time it comes up if the vehicle is 4-Wheel Drive. If it is then the problem is typically caused by worn out CV axles. If the...

2005 Chrysler Pacifica transmission won't shift gears

The only thing you can really check is the fluid level. Start the engine in park, parking brake on, open the hood, find the transmission dip stick. Pull it, wipe it, re-insert it and see if the level is where...

Related articles

Is it Safe to Drive With a Slipping Transmission?
The transmission converts the power from the engine into motion so the vehicle can move. Vehicles have either an automatic or manual transmission....
Does An Automatic Transmission Have a Clutch?
Most of the time we think of a clutch in the context of a manual transmission. An automatic transmission does have...
The Mechanics of Cars: Simple Machines in Automobiles
Simple Simple machines are single, mechanical devices that help improve the daily life of humans by allowing them to work faster, easier, and more efficiently. Simple machines are considered to be the basic mechanisms that all complex machines...