Q: Issue is between 3rd and 4th gear during driving.

asked by on

After the transmission shifts into 3rd gear and the rpms continue to rise there is a momentary pause and subsequent 100 to 200 rpm drop then acceleration continues and shifts into 4th with no problems.It is not intermittent and happens every time. No check engine light and there are no stored or pending codes. I checked for engine misfires on each cylinder and there were none.I have new spark plugs and just replaced the electronic throttle body to see if that was it but its still there. It happens under any type of throttle input so i am wondering if it is a transmission sensor, but it does not make any sense there are not any pending codes. There are 3 transmission sensors: turbine shaft speed sensor, output shaft speed sensor and the digital transmission range sensor. Is one of these going bad, and if so, why cant the pcm not see it?

My car has 96500 miles.
My car has an automatic transmission.

Hi there. Ford Fusion’s are notorious for having transmission issues. In most cases, the problem you are describing has been determined to be caused by an internal hydraulic failure or obstruction. In some cases, it’s due to debris inside the transmission that creates a ’slipping’ effect when the automatic transmission shifts to higher gears. If the sensor(s) was damaged and the source of this problem, it would register a code in the PCM. You might want to either; flush the transmission fluid and change the filter to see if this resolves the issue, contact the service department at your local Ford dealership to ask them about this issue and if there are current service notifications or recalls pending about this issue. Otherwise, have a professional mobile mechanic come to your location to complete a car is hard to shift inspection.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Issue is between 3rd and 4th gear during driving.

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

Get a quote

What others are asking

Q: Metal-on-metal sound from front of car

It sounds like the pads are grinding the rotorLook through the wheel. Take note of the brake pad thickness. See if there is approximately 2mm of pad surface remaining (about the thickness of a nickel). If possible look at the...

Q: What climate control elements can be controlled from the touchscreen?

If your Fusion has the touchscreen navigation system installed, then it’s tied into your Automatic Climate Control system as well. You’ll find that some of the physical controls on the HVAC system are duplicated on the touchscreen (that way, if...

Q: I recently replaced the battery in my vehicle; after replacing the battery the car horn completely stopped working.

To diagnose this you can check for battery voltage at the horn terminals when you activate the horn button. If voltage is present, the horn is defective. If no voltage is present, trace the circuit back to the battery and...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...