Q: When I accelerate, loud ticking noise at low rpm, car jerks and stutters. It goes away at higher rpms.

asked by on

Car makes loud noise on acceleration, low rpm. Stutters and jerks lightly. Needed to drive it home, on highway noise goes away at higher rpms. Had it on cruise control, noise went away but misfired regularly. Autozone coded my o2 sensors and misfired in 4 different cylinders. Need advice badly

My car has 170000 miles.
My car has an automatic transmission.

The misfiring could be ignition or fuel related. If the plugs have not been replaced, on the timetable set forth in the maintenance schedule, that is certainly one possibly. Also, the plug wires could be tested. Diagnostic Trouble codes that "refer" to oxygen sensors do not always set because the sensor itself is bad. Lots of other faults can cause those codes. Oxygen sensors should be tested for function prior to being condemned on the basis of a "code" but if yours are original, and thus have 170,000 miles, it would not be unreasonable to replace them as part of the diagnostic and repair (and, of course, replacement may resolve part of the issue you are having). Codes related to any misfiring need to be scanned by a Mechanic and evaluated. If there are no such codes, a scope should be used to look at the firing patterns in the cylinders to infer where the fault lies. The ticking noise is probably related to the valve train. One possibility is low oil pressure and such is tested with a pressure gauge. I recommend you request a misfiring diagnostic to get that problem resolved as it is the most basic and then deal with the Codes referencing the O2 sensor(s) and finally the noise.

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. When I accelerate, loud ticking noise at low rpm, car jerks and stutters. It goes away at higher rpms.

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: Sometimes my car runs loud from the front of the engine

From what you describe it would appear that an exhaust leak may be affecting your engine's performance. If the leak appears to come and go, then the first thing I would do is look at the vehicle's EGR valve and...

Q: Q: Slow acceleration

Thanks for writing in about the acceleration issue with your 2007 Volvo S60. At first glance, I'd agree with you that the problem would be caused by the MAF sensor, as that's what commonly causes the slow acceleration issues and...

Q: Engine knock, burned a lot of oil

The ticking sound is caused by the valves in the engine experiencing a low oil condition, the lower the oil gets the louder the noise. This is a well-documented problem for this series where the vehicle will excessively consume oil,...

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.