excessive engine noise

2004 FORD THUNDERBIRD
107,000 MILES • 3.9L • V8 • FWD • AUTOMATIC
Avatar
KELBAR
  • MEMBER
  • 4 POSTS
when accelerating the car, the noise seems very loud; originally had exhaust system checked and was told all looks good. what other things can cause excessive noise?
Sep 13, 2017 at 3:50 AM
Advertisement
Avatar
STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
Depends on what the noise sounds like. A whistle could be a cracked inlet tube around the air filter. Bad bearings in an accessory like the alternator, power steering.
Could be internal engine damage or transmission related. Brakes or tires can make more noise as well.

To eliminate items:
Does the car have to be moving for the noise to happen or can you hear it setting still with the transmission in park?
Does the noise get louder if you hold the brake on and put the transmission in gear?
Does it matter if the gear is forward or reverse?
Can you describe the sound better?

If the noise only occurs while moving:
If you lightly step on the brake, does the noise change/stop?
Does the noise continue even once you get up to speed or only while you are speeding up?


Sep 13, 2017 at 11:14 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.