Q: RPM increases but can't go over 45 mph, after putting in transmission fluid

asked by on May 24, 2016

Hi, I have some acceleration problems with my car. It started happening when I put in some fluid that I got from the dealer, as the transmission fluid level was low. I cannot go over 45 mph now. It can't accelerate even though the RPM increases. Do you have any idea what causes this? Thanks.

Transmission Fluid Service $125.08 - $440.73 Get a Quote
Transmission fluid is leaking Inspection $79.99 - $89.99 Get a Quote

Your transmission is slipping. I would have the transmission checked to see if the transmission fluid is low or overfilled. Why did you have to put in fluid? Did you have a leak? The transmission may be low on fluid or the transmission clutches are slipping. Have a certified mechanic, such as one from YourMechanic come to your house or office to inspect the transmission fluid levels and see if the transmission has leaks or needs to be repaired.

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

What others are asking

My van tramission fluid all leak out the car, and the car isn't shifting gears is acting on neutral ....

Hi there. It seems that your transmission has a large leak. The first thing to do is to move the vehicle to a safe area where an inspection can be performed. Locating what has ruptured, cracked, split, ect... may be...

I have a broken axle seal not the boot, but the seal on the transmission

Hi there. The issue you're describing is a common problem with many of Toyota's Prius Hybrids. In fact, several 2010 - 2013 models have factory recalls on some transmission seals. When the seal is leaking fluid, it can cause a...

Car went backwards when I had it in drive.

This is a known issue in the Volkswagon Jetta transmission. Converter drain back is a situation where the automatic transmission fluid drains back into the transmission pan causing this kind of a reaction. Some of this is normal, but not...

How long can I drive on the spare donut tire originally provided with car?

A general rule of thumb is to not drive on this spare doughnut tire for longer than ~+/-70 miles or driving faster than 50 mph. These tires are not designed with much tread on them and will wear out very...

Half shafts

Hi there. The left hand axle has male end on both sides and the right hand has one male and one female on it. The parts you have are correct. If you need further assistance with your overhaul, a certified,...

Overheating, blow cold air

The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...

My car lacks power, the acceleration doesn't seem to be there and there has been a few times where my car had trouble starting.

Hi there. I understand your concern and have experienced this feeling myself once my vehicle had some mileage. How often is the maintenance performed? When was the last time the air filter, spark plugs, oil, trans, etc. changed? Has the...

When I put my car into drive it makes a loud grinding noise and doesnt move.

Hi there. The transmission may have broken the differential or a CV shaft (constant velocity shaft). If a CV shaft was to break, then all of the power will go to the broken shaft. When you said that you stopped...

Clunking noise that chages relative to changes in speed

Noises are best diagnosed firsthand, however, I can provide some guesses in regard to your noise. The first thing that comes to mind is a failed CV axle, which will often make a clunking noise upon acceleration. A worn propeller...

Related articles

5 Signs Your Car Isn't Shifting Correctly
Improper shifting is a sign of car transmission problems. The solution might be simple or complex, but get it inspected to avoid expensive repairs.
Top 10 Ways to Extend the Life of Your Car
Every driver wants a car that lasts a long time. Make your car last longer by checking your motor oil, parking in the shade, and keeping it clean.
How Long Does a Transmission Filter Last?
Your Your transmission filter is a very important component in your vehicle, because it’s the front line of defense when it comes to keeping contaminants out of your transmission fluid. Most automobile manufacturers recommend a transmission filter change every 2...