Q: Acceleration malfunction

asked by on September 29, 2016

1--- At times, when I press the gas pedal, the car revs up ever so slowly, the RPM increases very slowly and the car moves like a snail.

2--- At other times, the car revs up too much, the RPM is around 4000-5000 even while running at 80 kmph. (The car usually is stable at 2000-2500 rpm even at high speeds.)

3--- Another thing that occurs, is a sort of 'jump', that occurs when I halt the car and then move again. This 'jump' is most certainly followed by the Problem 1. And when I go further along the highway, Problem 2 occurs. So the sequence is 3, then 1, then 2.

Note: The car has a missing oxygen sensor, just FYI. Will appreciate greatly your help as many mechanics were unable to diagnose the problem. Tried cleaning the throttle body (by a mechanic of course). Didn't help. Thanks

My car has 6 miles.
My car has an automatic transmission.

If the car is missing an oxygen sensor, this needs to be addressed first. This can cause the computers to do all sorts of strange things. The PCM uses the O2 sensor to make most decisions for your car to function properly. Your car can’t be diagnosed with such a problem. Personally, I would not address the transmission issue until the O2 is restored to its normal function. Cleaning the throttle body will not have any affect on what sounds like a transmission problem. Either you have a transmission issue, or your car is defaulting to limp mode because of the missing O2 sensor.

If it is a transmission problem, the following are the possible causes. Most likely it is sticking in one gear. This could be do to ATF that has not been replaced frequent enough resulting in debris build up in the transmission that clogs the very small passages. There could be a wiring problem or a solenoid issue as well, but least likely, a problem with the TCM (Transmission Control Module).

The way I interpret this is when the RPM’s increase slowly, the transmission is stuck in a gear other than first. When it revs to much, it is most likely unable to shift into overdrive.

I’m sorry you haven’t found someone who can successfully diagnose your problem. What you need is someone with a lot of experience working on Honda’s. I recommend having a certified technician, like one from YourMechanic, diagnose your acceleration issue firsthand and help you make the necessary repairs.

Good luck!

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

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

If I replace the ignition switch, can I use my existing BMW Keys with remote and valet key?

Yes, you can. The ignition switch is separate from the EWS system, so replacing the switch will still allow you to use the current keys you already have. Only if you have to replace a faulty key or EWS module...

O/D off sensor lit up on the dashboard.

Hi there. I recommend changing the transmission fluid first to see if there is any contanimates in the oil and filter. If the fluid is dirty then the sensors will not work very good. If the fluid is good and...

Code P0011 problems

Hi there. P0011 is the OBD-II generic code indicating the engine control module (ECM) has determined that the bank 1 intake camshaft is more advanced than what the ECM has commanded it be. This over-advanced condition could be during advancing...

Related articles

How Do Sensors Get Dirty or Damaged?
Car sensors measure and relay vital information to the ECU. Some sensors can get dirty from normal use, or fail if the car overheats or has a problem.
A Buyer’s Guide to the 2012 Honda Accord
The The 2012 Honda Accord has a lot to offer. From great fuel economy to comfortable features and a sleek, modern look, it’s no wonder so many people love the Accord. Though, unlike the Civic, Honda has yet to offer...
Can Sensors Be Cleaned or Do They Need to Be Replaced?
In In most cases, sensors for your automobile will need to be replaced if they fail, but depending on the type of sensor and its location or function, some can be cleaned and reused. Sensors can come in many...