Q: 1995 honda civic dx when starting in first the car jerks back and forth and sounds like its reving high then low then goes fine

asked by on July 25, 2017

when putting the car into first gear letting off the clutch and giving gas the car rpms sound like they are dropping and jumping back up car jerks as if its hesitating. when driving in a higher gear the car does fine until you let off the gas and apply gas again car jerks when doing so. i replaced the tps sensor checked the maf sensor by unpluging while the car is running and the car died so the maf is fine.
My car has a manual transmission.

This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, making turns (which makes use of the power steering pressure switch) turning on AC or engaging the brakes). The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses this information to adjust ignition timing and fuel enrichment. When the engine is working hard, intake vacuum drops as the throttle opens wide. The engine takes in more air, which requires more fuel to keep the air/fuel ratio in balance. When the computer reads a heavy load signal from the MAP sensor, it adjusts the fuel mixture to slightly more rich than normal so the engine can produce more power. The computer will then retard (back off) ignition timing slightly to prevent detonation that can damage the engine and decrease performance. This may also be caused by other closely related components such as a dirty or failing mass air-flow sensor, a faulty throttle position sensor or potentially a vacuum leak. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

I have a knocking sound coming from the front passenger after replacing cv axle

Brakes are stiff. Car is not starting.

Your car has power brakes. The power assist relies on engine vacuum. When the car is off, there will be a little stored vacuum in the system, but when you push the brake pedal when the car is off, the...

Will the check engine light cut off automatic

In some rare instances your check engine light may disappear by unhooking the battery, however this is not recommended since doing this may be avoiding a potentially more serious problem temporarily by clearing the code this way. If there is...

Engine Knock only during start up and acceluration, some oil found in spark plug well also. possible rod knock

Hi there: If you've found oil in the spark plug well is a sign of a fairly serious problem that should be inspected and repaired immediately. It is almost always due to a failing gasket or O-ring but can also...

Muffler smoke after doing repairs on the car

Most likely, the work you had done and the smoke are unrelated. Black exhaust smoke indicates a rich air fuel mixture and can be caused by problems like a leaking fuel injector or faulty engine sensor. White exhaust smoke indicates...

check engine light

When the radiator broke, the engine coolant sensor or other sensors may have set a code in the computer. These codes and the Check Engine Light will not go away until the vehicle is scanned and codes cleared if repairs...

Dead battery

Once the battery is replaced, have a trained technician, like one from YourMechanic perform a charging system test to make sure the alternator is charging the battery. If the alternator is not charging the battery the battery will run down...

Related articles

The Top 5 Selling Cars in California in 2012
California California natives are notably environmentally conscious, and this often shows in their choices of vehicles as well. While trucks rarely make it to the top spots, hybrid vehicles are frequently on the list. Though previous years have seen the...
The Best Used Cars to Buy If You're in a Wheelchair
Being Being in a wheelchair means you have a very specific list of demands, and requests for your vehicle. The main focus is of course how you will get in and out of the vehicle. There are some other aspects...
2012 Honda Accord vs. 2012 Honda Civic: Which One Should I Buy?
The Honda Civic was the best-selling compact car as well as the third-best-selling car overall in 2012. With its unique blend of reliability, affordability and refinement, the Civic is a gold standard for transportation in general. While the Accord is...