Skip the auto shop - Our mechanics make house calls

Q: Random misfire while accelerating on "Drive"

asked by on

So I've recently been spending money on my 6th gen accord to narrow down my problem to one thing. And after thinking I might have a "heat soak" issue, I've started thinking "this has never happened when I got the car at 130k." I've replaced engine mounts that are vacuum assisted and that solved the misfiring and shutting off when hot problem. Then, I cleaned my throttle body, EGR, and Plenum (Intake manifold) and I feel a better difference as well, but still no cigar. So I come to realize that I could have overlooked the TPS. I start researching common issues that might lead to the TPS and sure enough there was verifiable info that a faulty TPS can cause these symptoms. I hope when I change my TPS, it actually terminates the problem. I love my 2000 accord and treat it with love and care since I am OCD when it comes to cars. That being said I am eager to solve this issue for good. The engine mounts are vaccuum assisted so if the are bad, they will bring in unwanted air into the line

My car has 160000 miles.
My car has an automatic transmission.

A: Well it does sound like you have been tryin...

Well it does sound like you have been trying to tackle quite the misfire and driving issues on your Honda Accord. Taking such measures as cleaning your Honda's throttle body, the EGR and the intake manifold are great steps toward having an engine run better. However, before attempting to replace your throttle position sensor, it may be best to confirm if this part is failing or if the problem lies elsewhere. From the description provided, it is a little difficult to narrow this down to one particular issue. Worn out spark plugs and failing ignition coils can also produce a random misfiring while accelerating, which may be one of the symptoms you are experiencing. Personally I have experienced a failing automatic transmission give the same symptoms of a misfire. With a situation like this, it may be time to enlist the assistance of a certified mechanic, such as one from YourMechanic, to come by and give you a hand with your Honda Accord. They will have the experience and tools needed to quickly diagnose your random misfire concern. They will also be able to assist you in making the necessary repairs so we can eliminate the misfire and get your beloved Accord driving smooth again.

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・Save up to 30%

Get a quote

What others are asking

Q: Power window not rolling up

If your driver side window is not rolling up there may perhaps be a problem with the window regulator, motor, switch, or wiring. As these components are located inside the door, I would recommend having a professional technician, such as...

Q: Control arm bushings going bad

Bad control arm bushings will cause the issues you have described except for the grinding noise. The grinding noise is most likely the brake pads grinding the rotor surface. Look at the rotors and see if there are deep grooves...

Q: Temperature gauge not working?

You would need to check the temperature sender unit to see if it got coolant in the connector or wire got shorted somehow. Disconnect the sensor and see if the gauge acts differently. If it does then replace the sensor...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...