Q: Car hesitation while accelerating/highway speeds

asked by on October 19, 2017

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.

Engine is misfiring Inspection $79.99 - $99.99 Get a Quote

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.

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


Experienced Mechanic?

Earn up to $65/hr

What others are asking

Acceleration problem - 2002 Honda Civic

Hi. I think you have a fuel supply problem. Either the fuel pump is failing (rapidly), or the fuel pump relay is failing - only working in short bursts until the contacts get so hot they won't pass current to...

Car cranks and turns but won't start 1996 Honda Prelude

Hello - I think there is a pretty good chance that your engine has seized due to a lack of oil. I suspect there is little compression due to piston rings seizing in the cylinder, and there is bearing damage...

What is the maximum load limit?

Your car might seem like it can haul almost anything you want to cram inside, but that’s not actually the case. All vehicles have a weight limit, called the maximum load limit. This is the total amount of weight that...

Starting problems, starter failure - 1994 Suzuki Sidekick

Hello. Make sure you double check to see if the starter is getting good connections and the cables are good. You may just have a starter that is common to only last a few years before wearing out. Make sure...

My Honda security light is flashing on dash car will crank but won't start

Hi there. If the Security Indicator Light is on steady with the key in the "run" position, and the vehicle won’t start, there could be a fault with the system. In this case, the first thing to try is a...

Loss of power

Hi there, thanks for writing in. Most of the time this is caused by a fuel system issue. I typically check the fuel pressure first. If the pressure is low, then the pump is bad. If the pump is fine...

My car weak to start , battery & alternator ok, I put fuel injector cleaner today, some emissions smell exterior, what can it be?

Hello there. Many different faults can cause your 2000 Honda Accord to be slow to start. The most common fault is the battery. If the battery has been load tested and ruled out, there are other possibilities. Other likely faults...

Car sputtering when I let off gas pedal

It sounds like you have a fuel-to-air ratio issue. Anything from the idle air control valve to the oxygen sensor may have a malfunction. Diagnosis would be required before changing parts. YourMechanic can send a qualified technician out to your...

New battery alternator and starter car ran for an hour then stalled and won't crank back up battery is dead

The term "short circuit" is probably the most overused term in technology, but I think it might apply in your case. It sounds like there is some connection or device that is shorting you battery and charging system to ground...

Related articles

The Best Used Cars to Buy for Families
If If it’s time for you to search for the top used cars specifically for families, check out the list we’ve put together of the top five. The list of must-haves Typical items that families are looking for in their...
A Buyer’s Guide to the 2012 Honda Fit
The The 2012 Honda Fit is a fuel efficient car that has lots of head and legroom for drivers and passengers alike. In addition, its five door configuration holds large items like skis, bikes, and surfboards for those who love...
The Best Used Cars to Buy If You Live in a City
Living Living and driving in the city means you’re faced with parking constraints, narrow streets, and the constant stop and go of traffic. With all of that said when you’re ready to purchase a used vehicle these are all things...