Q: Car won't stop making noises and jerking .

asked by on

My car is making a knocking, flapping , rattling noise when i drive it. It also jerks when accelerating to reach a higher speed . My rpm won't rise above 3000 rpm . The fasted my car can go on the high way is about 50 barely even that .

My car has 239694 miles.
My car has an automatic transmission.

The rough running circumstance you are describing is often a consequence of multiple faults in ignition, fuel, and air induction, not to mention the possibility of low or uneven cylinder compression. Just as a for instance, you could have uneven cylinder compression combined with faulty spark plugs or perhaps inadequate fuel pressure. There really are a myriad of causes of rough running and thus a mechanic has to apply a systematic diagnostic. Mechanics use a "decision tree". Often, at the top of the tree is simply making sure that all maintenance related to "engine management" has been done. So, if it turns out that the engine’s spark plugs haven’t been changed in 150,000 miles and the wires are 15 years old, often things like that should be addressed first for two key reasons: they have to be done anyway and simple maintenance might make a difference in the subsequent diagnostics. Your best bet is to request a rough running diagnostic and the responding certified mechanic will go over your engine from top to bottom and see what can be done to restore it to reasonably good operating condition. Typically, such is achievable with just those repairs indicated by a professional diagnostic. Please let us know how we can best address your needs.

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 won't stop making noises and jerking .

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 car is using lot of water and i don't know why.

Hi there. First check the oil in the engine. See if the oil is milky and not dark in color. If the oil is milky, then there is either a head gasket that is burned and putting the coolant into...

Q: 2007 Ford focus sputters when idling and check engine light is on

Hi there. In most cases, when the check engine light is illuminated, it's due to a sensor or vehicle system recognizing a problem and storing an on board diagnostic (OBD-II) in the ECU and triggering the warning light. When your...

Q: Started idling rough then stalling at traffic lights after about 20 minutes of driving. Replaced fuel pump, fuel filter, and spark plugs.

Try flushing out the fuel system with a fuel treatment. You may have to remove the supply fuel line and blow out the line with air pressure to clean out what could be blocking the line. Check all of the...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...