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.

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

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: P0335 crankshaft position sensor circut malfunction A 2000 Nissan Sentra

Hello - the P0335 problem code you extracted indicates a crank position was not detected. This usually means the crankshaft position sensor has failed, which will cause the sudden stall you experienced, but can also mean the electrical system voltage...

Q: Do you have to remove the engine to replace timing chain cover gasket and water pump?

Hi there: In short, no; you don't have to remove the engine to replace a timing cover gasket or water pump on a 2000 Ford Taurus. You should remove ancillary components such as the radiator and some other parts in...

Q: How do the side air bags work?

Your car has a number of air bags located throughout the cabin. Your side air bags can be found in the left side of the driver front seat and the right side of the passenger front seat. They’re small and...

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...
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...
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...