Q: Car not revving over 3,000 RPMs

asked by on

The car will not rev over 3,000 RPMs.

Fault codes need to be read out of the engine computer to guide the direction of diagnosis. If no fault codes are stored, then possible issues could be a camshaft sensor, or crankshaft sensor that losses its signal at that engine speed. Also, the engine management system on the Neon Turbo uses a speed density system, which uses intake manifold pressure to set up injection timing. If the MAP sensor is not reading pressure correctly, then injection timing may not be set correctly by the engine computer.

One last thing to check is fuel pressure and volume. If the fuel pressure is dropping as engine load increases, then the engine will stumble due to a lack of fuel.

There is a technical service bulletin on the Neon for updated spark plug wires, but this issue doesn’t just limit the engine RPM’s to 3000. Nevertheless, you may want to make sure that you have the updated wires. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the equipment and expertise to diagnose these types of drivability issues.

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
  1. Home
  2. Questions
  3. Car not revving over 3,000 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: Car coughs while driving.....sometimes.

Hi there. There are multiple potential causes of your engine's "cough". The engine that powers your 2007 Honda City has multiple sensors that help the fuel system burn fuel efficiently. Since your fuel efficiency mileage is also suffering, my...

Q: rough idle and misfiring at stops

Lets start with what the codes mean. P0060 - indicates that there is a network failure to the ECU. One or more control modules are not communicating. This is usually caused by a bad ECU, poor electrical connections from corrosion...

Q: Is it worth fixing or just junk it?

The sales tax alone on a $20,000 new car amounts to about $1,400. Inasmuch as $1,400 will buy a lot of repairs, you'll obviously want to give serious consideration to fixing what you have. I would first check and make...

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...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...