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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Random misfire while accelerating on "Drive"

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: My battery light keeps coming on and radio went off and on then off completely then car lost power toyota avalon 2000

Hello. If the engine will not stay running then the alternator is bad. The battery will also need to be load tested as a bad alternator can also cause the battery to fail. When I come across this problem I...

Q: Filled in regular instead of premium fuel, CEL came on, P0022 code

Hello there, the P0022 code is indicating that the car's computer has over-retarded the engine timing. This makes sense with the 87 octane gasoline used instead of the 93 octane gasoline. The car was most likely attempting to adjust to...

Q: Rattling Noise from somewhere around engine top when idle, goes away with little acceleration

This is difficult to pinpoint without having the vehicle inspected. Given that the sound goes away upon acceleration, it sounds like it may be something that is loose since the vibration from higher RPM's makes it go away, however I...

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 Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...