Q: What sensor can cause delayed shift on a hard acceleration

asked by on

I have a rebuilt transmission with about 12,000 miles on it and a year old recently it's started to act up such as when in cruise control and hitting a hill it will do a little jerk motion then downshift from overdrive. And when going about 25 mph and putting it to the floor it downshifts to first and barely accelerates, but when put to the floor from a dead stop it has no problems except delayed shift and sometimes even hits rev limiter. This leads me to believe it's a sensor of some kind especially considering it's a fairly fresh rebuild.

My car has 12000 miles.

Hey there. The transmission control module (TCM) helps regulate fuel efficiency and power while storing information about the transmission system in its memory. A faulty transmission control module may cause a delay in acceleration or erratic shifting of gears. The transmission control module has various sensors such as vehicle speed sensors, wheel speed sensors, throttle position sensors, turbine speed sensor, and transmission fluid temperature sensors that all direct information to it in order for it to perform its function.

Other components controlled by the TCM are components such as a kick down switch, traction control system, and cruise control module. Any of these may also affect the way the transmission control module performs and controls the transmission and the shifting of your car. I would suggest having a professional from YourMechanic come to your car’s location to properly diagnose the shifting issue and advise on the correct repair.

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. What sensor can cause delayed shift on a hard acceleration

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: I just want to know if my car has a crankshaft position sensor - 2003 Nissan Xterra

Hi there - yes, your V6 Xterra has a crankshaft position sensor (CPS). It is located behind the driver-side cylinder head, on the top of the bellhousing (the aluminum casting that connects the engine and transmission). For assistance with replacing...

Q: The serpentine belt is not lining up.

The pulleys may not be lined up in the same plane. Look at the harmonic balancer and crank pulley in particular. The rubber bond in the balancer may have failed thus causing misalignment of the pulleys relative to the other...

Q: High idling happening occasionally after driving over 8 miles

Hi there. Most of the time this is caused by a problem with the throttle body. I usually clean it out first and inspect it for wear. If there is wear around the throttle plate then it needs to be...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.