Q: Car hesitation while accelerating/highway speeds

asked by on

Hello, I have a 1999 Honda Civic lx 4 cylinder manual transmission.

About 4 months ago my vehicle started to hesitate while accelerating. It started to get worse over time. Therefore, I replaced the spark plugs (2×), spark plug wires, the rotor(2×) the igniter,(2×) the distributor, the distributor cap(2×), fuel filter, fuel pump, the throttle body, engine coolant temperature sensor, and idle air control valve sensor, and even did a compression test. Car is still not healed.

Diagnostics obviously say misfire, but I believe a sensor is going bad since the symptoms relate so much to possible parts. Also, the hesitation is intermittent. One day it'll be fine or It would do it when I first drive it then the hesitation will disappear and then come back. That is why I think it is a sensor.

What I have not done is replace the 02 sensor, throttle position sensor or the crankshaft position sensor. Basically, I've replaced 90 percent of possible problem parts. What do you suggest?

My car has 183000 miles and a manual transmission.

Hi Miko. Thanks for contacting us today. The first thing I would do is download any stored OBD-II trouble codes in the ECU. This might lead you to your random misfire issue. I wouldn’t suggest replacing any sensors until you’ve found the one that is faulty or the electrical harness connected to the sensor that is frayed, damaged or not connected correctly. Since this issue is completely random, I would not recommend replacing any parts until the root issue triggers an OBD-II trouble code - as you’re literally guessing at possible sources and chasing repairs. This typically never works. You might want to have a professional mechanic come help you locate the root issue as it’s quite possible the root issue is the ECU itself.

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. Car hesitation while accelerating/highway speeds

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: Q: How does the tire pressure monitoring system work?

Your car is equipped with a tire pressure monitoring system (TPMS) that checks the pressure in each tire via a special sensor mounted inside the tire (it’s connected to the valve stem). When the system detects a drop in tire...

Q: Q: Check engine light

Hi there, Thanks for taking time to write in about your 2010 Mini Cooper. The cause of most engine sputtering in today's modern cars is not fuel-related, but problems with the O2 sensors or other minor electrical gremlins inside...

Q: My oil light came on different times the last few days what could it be

The first thing to do is to check the engine oil level to see if it is low on oil. If low then top it off. If oil is full then you will need to have the oil pressure checked...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...