Skip the auto shop - Our mechanics make house calls

Q: Transmission slow to engage into 1st from stop

asked by on

My car hesitates to engage into first gear from a complete stop. This usually occurs when I am at a stop for an extended time. If im just stopping and going it will not happen. The previous owner had not serviced the fluid. I ran a drain and fill twice. Could the tranny be bad? What electrical components can I diagnose? TPS? PNP?

Thank you, Frank R.

My car has 124000 miles.
My car has an automatic transmission.

A: Hello. This may be a sign of a faulty trans...

Hello. This may be a sign of a faulty transmission control solenoid. Modern automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car’s computer activates a transmission solenoid, which directs transmission fluid into the valve body to engage the correct gear.

When this is faulty or not working properly, this can cause a delay in gear shifting or in some cases cause the car to not shift at all. This may also be related to a faulty transmission control module. 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 it’s function. If you would like to have this scoped out by a professional, a certified technician from YourMechanic can come to your car’s location to diagnose the shifting problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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

Get a quote

What others are asking

Q: Car stuck on park

From the description provided it appears that you are experiencing transmission problems with your Mazda MPV. There can be a variety of reason why your Mazda is failing to engage in any gear, such as low or dirty fluid, failed...

Q: Very rough idle goes away at speed. Can it be the cam solenoid?

Hey there. This may be related to a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds...

Q: Kicking sound in Reverse

It sounds like you are having a problem with a motor or transmission mount, allowing the engine to move when you are in reverse. The kicking sound may be the engine hitting the hood or the firewall. I would recommend...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.