Q: My car is jerking. When I plug in the idling sensor, especially after driving a few kilimeters and when I unplug it, the car travels well

asked by on

The car travel well without the idling sensor but is taking a lot of fuel, when i plug in the sensor the car idle well but when moving few kilometer it start to jerk like is cuting fuel

My car has 323000 miles.
My car has a manual transmission.

Hi - it is quite possible your engine is running in "open loop" when the idle sensor is disconnected, simply because the engine computer realizes that a crucial sensor is missing. By design, open loop running will be a richer mixture, with poor fuel economy. The idle sensor has no real purpose once the car is driving at most any speed. When the idle sensor is plugged back in, the computer is trying to adjust fuel mixture as it should, but other sensor problems (which should be setting the Check Engine Light) are overwhelming it. Check for the problem codes being set, and diagnosis will become easier.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. My car is jerking. When I plug in the idling sensor, especially after driving a few kilimeters and when I unplug it, the car travels well

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: Why would my Durango increase RPMS while slowing down?

It sounds like you may have a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...

Q: Transmission Issue

Hi there: The symptoms you're describing are similar in many ways to restriction of hydraulic fluid inside the transmission. Sometimes flushing the transmission fluid can help remove those obstructions; but in most cases, it delays the inevitable task of removing...

Q: Engine noise at idling, Check Engine Light on

Hello. It is common for these cars to have problems with the camshaft gears making noise and causing the Engine Light to come on. If the problem persists, then damage to the motor is possible. It would be a good...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.