What causes erratic shifting, ford f150, 1999. Fluid is fine, just shifting all over the place

The erratic jumping in and out of overdrive (O/D) on your 2006 Terrano 3GMR with a 3.2L engine could be caused by a few different issues. Here are some possible causes and fixes:

1. Faulty speed sensor: The speed sensor provides input to the transmission control module (TCM) to determine when to engage overdrive. A faulty sensor can cause the TCM to think the vehicle is going too slow or too fast for overdrive engagement. A mechanic can test the speed sensor and replace it if necessary.
2. Low transmission fluid level: Low transmission fluid level can cause the transmission to shift erratically or not engage overdrive. Check the transmission fluid level and add fluid as necessary. If the fluid level is low, it's important to also check for any leaks that may be causing the fluid loss.
3. Worn or damaged overdrive band: The overdrive band is responsible for engaging and disengaging overdrive. If the band is worn or damaged, it may not engage properly. A mechanic can inspect the overdrive band and replace it if necessary.
4. Transmission control module (TCM) issues: The TCM controls the shifting and engagement of overdrive. If the TCM is malfunctioning, it may not engage overdrive or cause erratic shifting. A mechanic can test the TCM and replace it if necessary.

It's recommended to have a professional mechanic diagnose and repair the issue, as the transmission is a complex and vital component of the vehicle.

Hello
The issue you're describing with your 2008 Sebring and its 62TE transmission not moving in drive positions but trying to go forward in reverse could be due to a few different things:

1. Transmission control module (TCM) failure: The TCM is responsible for controlling the shifting of the transmission. If it fails, it can cause the transmission to behave erratically.
2. Shift solenoid failure: The shift solenoids control the fluid flow to the clutch packs in the transmission. If a solenoid fails, it can cause the transmission to behave abnormally.
3. Low transmission fluid level: If the transmission fluid level is low, it can cause the transmission to shift erratically or not at all.
4. Wiring issues: If there is a problem with the wiring in the transmission control system, it can cause the transmission to behave abnormally.

To diagnose and repair the issue, it's recommended that you have the vehicle inspected by a professional mechanic with experience working on transmissions. They will be able to diagnose the problem and make the necessary repairs.
Have a nice day

There could be several reasons why your 2005 Dodge Magnum is experiencing problems with shifting from second to third gear and then suddenly hitting reverse, including:

1. Transmission Fluid Level: Low transmission fluid level can cause erratic shifting, slipping, or stalling in your vehicle. Make sure to check your transmission fluid level and add if necessary.
2. Shift Solenoid: A faulty shift solenoid can cause problems with shifting in your transmission. The solenoids control the flow of transmission fluid through the valve body, which controls the shifting of gears. If the shift solenoid is failing or has failed, it can cause the transmission to slip, shift erratically, or get stuck in a gear.
3. Transmission Pump: The transmission pump is responsible for pumping transmission fluid through the transmission and to the torque converter. If the pump is failing, it may not be able to pump fluid properly, leading to problems with shifting and slippage.
4. Valve Body: The valve body controls the flow of transmission fluid through the transmission and directs the shifting of gears. If the valve body is failing, it can cause the transmission to shift erratically or get stuck in a gear.
5. Transmission Control Module (TCM): The TCM is responsible for controlling the transmission's shifting and overall performance. If the TCM is failing, it can cause the transmission to shift erratically or get stuck in a gear.

It's best to have a qualified mechanic diagnose and repair the issue as they will have the necessary tools and expertise to properly diagnose and fix the issue.

Hi. Before you do anything, check the transmission fluid level with engine running and in park. If the fluid is at the right level, there are 2 levels, a cold and a hot level. If the fluid is low then simply add fluid to correct level and check for leaks in hoses,transmission pan, external oil cooler if installed and axel seals. Normally fluid levels will not go down except if there is a leak somewhere. If the fluid smells burned, then you have most likely will need an overhaul as the tranmission has overheated due to high loads (pulling a trailer in hot temps, or simply because of age and the resultant excessive slippage of the friction plates.
However if the fluid level is good and fluid smells ok then gave the computer code read. Your problem could simply be a loose or corroded wire to or from the transmission causing erratic shift symtoms.
Good luck,
Gary

Check the fluid level. You may want to consider having the transmission flushed. (I recommend BG Products flush system.) Properly flushing the trans removes any varnish the may have built up causing erratic behavior.

check your fluid level, if it is low it can cause shifting problems. Also, your fluid may need to be flushed and refilled.

Yes if the vehicle speed sensor is bad than the computer can what speed you are going .SO the shifting comes from the throttle position sensor instead and trans shifting will be erratic :)

HI. the most important issue here is to make sure the transmission fluid is at a optimal level. If the fluid level is good, it can be another problem that is causing this disruption. The second place i would check would be the transmission shift cable and linkage. if you have some play in the shifter, this could be the issue. the linkage and cable may need to be adjusted. The last problem spot with this tranny could be bad or malfunctioning shift solenoids. these devices receive signals from the emc that initiates the shift action once you use the shifter. if one of these solenoids are malfunctioning, it can cause a disruption of normal shifting. i would check these areas.

please rate and god bless...

Too much grease? that is a load of u know what, I am aware of the slip yoke noise, there is a Technical Service Bulletin (TSB) form Ford, did he use the special Teflon Grease (a 100% must use) to lube the slip yoke? regular grease won't do. I also think you have something going on with the trans, has it ever been serviced (fluid and filter)? it should be done at least every 60,000 miles, worn out fluid can cause erratic shifting of the trans. I m a Ford dealer technician of 20+ years and a Ford certified Master Technician and ASE Master tech.

did you have transmission fluid changed and filter,transmission flush, beware oem transmission fluid should be used in ford sythetic transmission is required using dexron 2 0r 3 fluid will give slippage and erratic shift patterns