Q: Car is showing random misfire code po300

asked by on

I accidentally let go of clutch and gas in 1st gear causing car to turn off and jump foward, after i turned car back on it started shaking extremely bad, check engine light came on and now idles rough at 100 rpms normally would be at 1000 rpms. While driving it home like that i noticed that normally i would change gears at 3500 to 4000 rpms instead it was needing to change at 2000 rpms no matter what gear i was in. Ive changed the spark plugs, spark wires, coil pack but i dont want to keep wasting money on random stuff im hoping someone has had this happen to them i need help please

My car has 123000 miles.
My car has a manual transmission. Here is video link of my car.
https://m.youtube.com/watch?v=BrA6CY3R6uU&feature=em-upload_owner

The only sensor that will cause the RPM gauge to read incorrectly and cause a rough running engine is the crankshaft position sensor, or its wiring and connector. Try and disconnect the crankshaft sensor connector located above the oil filter on the side of the engine block. Look for any damage to the sensor or the connection. If you do not see any damage then the sensor should be tested or replaced and the codes cleared to see if it corrects the problem for you.

If you need assistance, a certified mobile mechanic can come to your home or office to inspect your vehicle’s issues and provide any necessary repairs.

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 is showing random misfire code po300

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 powerless and noisy. What is wrong?

Hi there. From the description you have provided, drive about 5-10 km engine starts to make strange noise, could be so many possibilities. Checking the engine oil level would be highly recommended. The noise from the engine area needs to...

Q: Goes in gear but goes no where. Bleed the clutch

This sounds like you have a bad clutch or transmission input shaft is not turning for some reason. You should have the transmission removed to have the transmission and clutch checked to isolate the cause of the no clutch engagement....

Q: Where is the starter located on my 2007 Mitsubishi raider?

Hi there. The starter location on your engine is on the driver side in the back of the engine. If there is a whirling noise by the alternator area when starting the engine up, then either there is a vacuum...

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...
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.
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.