Skip the auto shop - Our mechanics make house calls

Q: Thumping noise during acceleration but not at high speeds on a '99 Eclipse

asked by on

When I accelerate at a low speed, my '99 Eclipse sometimes gets a thumping noise from the right front. Thoughts on what it could be and where should I start looking? I don't hear the sound at full speed even though I am hitting bumps.

Sometimes when you accelerate and hear a thumping sound, a lot of times, that’s a strut mount. The strut itself is mounted under the car. The strut mount is made of metal and rubber. The rubber would often wear and when you give it a big push it will thump a lot of times.

Also, check out my video "Change broken motor mounts." It shows how to check them, too. You jack up the bottom of the engine and jack a piece of wood. As it rises up, you check if any of the motor or transmission mounts are broken. The transmission mounts can make a thumping noise, too. Check that also. If you would like to have a professional take care of this service for you, a technician from YourMechanic can diagnose the sound and determine what needs repair.

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
  • Home
  • Questions
  • Thumping noise during acceleration but not at high speeds on a '99 Eclipse

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: Front end rattle

There are many components that could cause a rattle noise like you describe. Faulty or worn strut mounts, tie rods, or possible the CV joints. It is also possible that a tire imbalance is causing a vibration that is shaking...

Q: Taillights not working.

Depending on how long ago you had the taillights repaired if it was only a month or two you might be covered by the shop's warranty. If its been a while longer it could just be normal wear and switch,...

Q: Clutch not disengaging (can't change gears) 1998 Mitsubishi Galant

Hi there - great diagnostic work, I believe you are correct in diagnosing a completely failed clutch throwout bearing. Replacement of the clutch assembly is, unfortunately, now in order. Don't forget the pilot bearing while doing this service - it...

Related articles

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...
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.