Q: My car hesitates at 1800-2200 rpm

asked by on

Initially my engine light came on with a bad 02 sensor and it hesitates from 1800-2200 rpm only when the engine has been put to rest for a long while and the hesitation disappears after accelerating for some minutes. Lately i checked the engine code and it says faulty cam sensor bank 1 and the hesitation has gotten worse; present everytime i drive the car. I changed both cam sensors but still no improvement. N.b i never changed the 02 sensor. What could be wrong with the car? Could it be a bad timing chain? Do i need to change the 02 sensor??
My car has an automatic transmission.

I would suggest replacing the oxygen sensor first. If you have a known problem with the vehicle, any diagnostics you would do would be tainted until the issue is fixed. Especially when the issue is with a component that has such a large impact on the engines’ performance. You must take into account the affect the oxygen sensor has on the overall performance of the engine. The modern fuel injection system uses the input from all of its sensors to determine how much fuel the engine gets, the timing of the ignition pulse, and many other parameters. So, if the computer that is in charge of making all of these determinations is getting a faulty signal from a known faulty component, it can have major implications on the way the engine runs. It is possible that there are other issues with your vehicle, but I would repair the known issue and see if that corrects the problem before chasing something else. If the situation is something you feel you could use a hand in identifying and/or repairing, contact a certified mechanic, like those available at YourMechanic.com.

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. My car hesitates at 1800-2200 rpm

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: How many oxygen sensors are there on a vehicle?

Your vehicle and engine will have four O2 sensors. There is one O2 sensor in each exhaust manifold and one after each catalyst. This is a diagram of your exhaust system to see O2 sensor locations.

Q: My car won’t shift to the park gear. All other gears work

There are a number of different things that may cause the vehicle to not go into park such as a broken or damaged shift cable or mechanism, a faulty key tumbler in some cases, or a faulty transmission solenoid. I...

Q: Land rover over heating and check engine light flashing

This is a result of your engine overheating which may be caused by a faulty thermostat. When this is stuck closed, this does not allow the coolant to flow through the motor properly. This may also cause the coolant to...

Related articles

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...
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...
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.