Skip the auto shop - Our mechanics make house calls

Q: Vibration in the car - 2003 Dodge Neon

asked by on

As soon as you turn on the car and it's in park, it starts vibrating. It's consistently vibrating as long as it's on, but it's the most noticeable when you first turn the car on and it's in park, or when you're idling at a stop light. We recently replaced the transmission and the motor mounts, and it seems to be vibrating more since we did that. What could the problem be?

My car has 133000 miles.
My car has an automatic transmission.

A: Hello. When issues get worse after a repair...

Hello. When issues get worse after a repair, always double check the work that was done. If you check that off right away, then you should look at why the engine is shaking so bad. This is typically due to uneven combustion in the engine.

The first suspect should be the injectors. Try injector cleaner additive to the gas tank. If this helps, you may want to think about doing a more serious cleaning of the injectors. Another component which becomes "gunked-up" is the throttle. Also give this the throttle body a good cleaning if it looks dirty.

There are several ways to do so and you should pick a method for your specific vehicle. Vibrations from the engine may or may not be very serious. If cleaning certain components doesn’t help, you should perform a compression test to see if the cylinders are firing correctly. If you need help having this taken care of, a certified professional from YourMechanic can come to your car’s location to diagnose and repair the shaking problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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!

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: Getting codes P0455 and P1470

Hello. Your codes bring up two completely different problems. The P0455 is for a small leak in the evaporative emissions system. Most of the time it is as simple as replacing the gas cap and clearing the code. If...

Q: Stuck in first gear - 2001 Chrysler Neon

These codes reference a malfunction in the transmission assembly. The problem may be another sensor or an internal fault within the transmission. The best thing to do in this case would be to diagnose the gear issue and pinpoint the...

Q: Vehicle turns off at any rpm, at idle or highway speeds, without stumbling or warning.

This kind of a stalling issue can be caused by a variety of problems. They are typically caused by ignition faults, wiring faults, and fuel issues. Although you do not have a Check Engine Light on, you should still scan...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...