Q: I hear a weird rattling sound when I let off the accelerator.

asked by on

When I shift my truck into drive or reverse, it shifts really hard. I can manually shift into 1st, 2nd, and 3rd gear, and it will shift fine. But when I shift into reverse or drive it clicks in really hard. When I'm driving, the gears shift fine. However, when I let out of the accelerator, I hear (what sounds like) a metal on metal rattling sound coming from the back or middle of the truck. I only hear it when coasting, and the sound immediately disappears after I press on the gas again. When I accelerate after coasting, it clicks back into gear hard like it does into drive and reverse. My tranny was just rebuilt less than a year ago due to the reverse going out. Thanks for any help.

My car has 230000 miles.
My car has an automatic transmission.

I hate to say it but it sounds like the issue is the transmission. There are a few things you could check before you go back to the rebuild shop. Check the driveshaft and U-joints. And check the engine and transmission mounts. The fact is there are 1000 moving parts, hundreds of hydraulic passageways, and very tight specifications in a modern automatic transmission. A very minor failure can cause very serious issues. If the shop that rebuilt it has a warranty, I wouldn’t hesitate to take it back and see what they think. If you would like a second opinion, consider having a certified technician from YourMechanic, such as one from YourMechanic, come to your car’s location to diagnose the rattling noise.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I hear a weird rattling sound when I let off the accelerator.

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: Squeaking noise when turning

Hi, this is an accurate diagnosis, but impossible to say for sure without a hands on inspection. Typically the squeaking is caused my metal rubbing on metal as the suspension parts move around with each other. There is usually rubber...

Q: Misfire at cylinder #6 and EVAP system not ready

Hello. The misfire that you are getting on that cylinder may be caused by a dirty or failing fuel injector. If compression is fine and if there is good ignition then it may be a fuel issue. If the engine...

Q: Why does my 2003 Chevrolet Tahoe idle rough when in gear

Hello. It sounds like you may have a few things going on here. Most of the time if you are having issues with the vehicle when the fuel is low it is because the fuel pressure is dropping off at...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...