Skip the auto shop - Our mechanics make house calls

Q: 1993 Nissan Altima transmission doesnt shift into 3rd gear

asked by on

transmission shift very good 1st gear and 2nd gear.stay stuck into 2nd but abnormally shifts 3er but immediately return into 2nd gear..the mechanic said tps sensor is faulty...its the same problem with 3 different tps sensor ,,,,I forgot RPM too high 50mph,,,3000rpm

My car has 281000 miles.
My car has an automatic transmission.

A: It sounds like you may have a transmission ...

It sounds like you may have a transmission issue. The throttle position sensor plays a part in knowing if the transmission needs to downshift, but if you have a sticking shift valve, or a pressure control valve issue, that could also cause the transmission to not shift.

I would also check for vacuum leaks or a misadjusted kick down cable, whichever your vehicle is equipped with. Usually, a faulty TPS will cause the Check Engine Light to come on and will store a code for it. These are used to tell the transmission that you want to go faster then the current gear is designed for. I suggest having a certified technician, like one from YourMechanic, inspect the shifting issue to determine if the concern is a sensor or transmission issue.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Traction control light comes on occasionally in dry weather

The traction control system is dependent on wheel speed sensors at all 4 wheels. It reads the speed of each individual wheel. If it detects a wheel or wheels, spinning faster than other wheels, it can apply braking or reduce...

Q: I'm going to go look at a 2008 g6 soon and the crankshaft position sensor is out what kind of problems can it cause?

If the crankshaft position sensor has totally failed, the vehicle may not start which of course will make it very difficult to evaluate whether the car is a wise choice. The car should be running before you buy it, otherwise...

Q: Car only goes in reverse

Hey there. This is something that is usually caused by low transmission fluid levels, a faulty transmission control module, or potentially burnt clutches inside the transmission. I would recommend having an expert from YourMechanic come to your location to diagnose...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...