4.8
definitely annoyingTypical Repair Cost:
$642.00
Average Mileage:
116,000 miles
Total Complaints:
5 complaints
Most common solutions:
- not sure (4 reports)
- fix heat shield on muffler (1 reports)
exhaust system problem
Helpful Websites About 1999 Ford Mustang makes a rattling noise when accelerating
2006Jul 27
(reported on)Mustang
- 155,000 miles
A while back my car started to make a noise as it accelerated same as Kristy's. Now it's this loud muffle noise(sounds like it is a diesel truck) it has something to do with the exhaust system maybe a hole I'm not sure I am waiting for my husband to get home to look at it. Any solutions?
2006Nov 30
(reported on)Mustang 35th Aniv. Ed. V6
- Automatic transmission
- 137,000 miles
My 99 was doing it a few weeks ago. I took it to the shop and the guy said i know exactly what's wrong with it. i didnt believe him so he took it off and showed me he put it back on and it quit! Sounds good as new
2006Aug 14
(reported on)Mustang
- 56,000 miles
It rattles especially when the air conditioning is on.
2005Jul 30
(reported on)Mustang
- 96,000 miles
The noise is only when accelerating and stops about 50 mph. It seems to only do it when it is hot. The exhaust when idling also sounds like the car wants to die.
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A D V E R T I S E M E N T S
2008Jan 01
Mustang V6
My mustang started to make a rattling noise when I would slow down, and it steadily got worse. Eventually, it made the rattling noise when accelerating, slowing down, and idling. I took my car to the Ford dealership to investigate; they said I needed my entire exhaust replaced. The cost would be $1250 to fix it. I decided to go to a different body shop and they found the actual problem. It was the heat shield above my muffler. It was just lose. The total cost to fix was $15. The shop guy said that I had a little rust on my muffler, but nothing that would warrant replacing the entire exhaust. There were no holes and no damage from an air conditioning water drip. I hope this helps everyone.
Byron H.
Champaign, IL, USA
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