Ford Mustang Forum banner

2006 Mustang GT possible transmission issue

1317 Views 23 Replies 9 Participants Last post by  GunsnStangs
A little over 96,000 mi and pretty much no major repairs.

Recently noticed under light acceleration, pushing in the clutch there is what would sound like taking a brick and scrape across the cement for a second.

There is throttle hesitation and a roaring sound.

It's currently at the dealership and they are recommending dropping the transmission to investigate.

Thoughts or someone with a similar experience?

Thanks in advance
1 - 9 of 24 Posts
Thanks all, will post back here once they call me on their diagnosis.(y)
The update is in from the dealership.

New clutch assembly, pressure plate, flywheel and pilot bearing.

Update: 1/23/2023
Well, I picked up the vehicle after all said repairs were completed. During the short drive home , realized the exact same issue is still there. I'm not even sure they even took it for a test drive. I will be taking it back tomorrow and see where we go from here.
Is it hard to shift at all, or just the grinding noise?
The shifts are smooth, just the grinding noise and the strange throttle hesitation.

I would be raising hell at the service counter and my voice would be heard throughout the dealership. I would also be talking to the GM about refunding all the labor charges on that repair. They had you spend all that $ and they didn't even diagnose the issue properly before telling you that was the fix. Then to add insult to injury they tried to brush it off by not telling you that the problem wasn't fixed or not even testing it to see if their "repair" fixed it. That's complete bs and this is exactly why no one trusts shops and especially dealers to work on their cars. Call the Ford 800 # if they don't cooperate and I'd call your bank to dispute the labor charges since you were deceived.

Thanks, and I'll be doing just that this morning.

Looks like we're at the step of them tearing the transmission apart and once again seeing if parts can be replaced if they are available or finding a used or remanufactured transmission.

The dealership called and finally was able to install a used transmission. The noise is still there and they are going to look into it a little bit further and possibly reinstall the original transmission. Provide a full refund and go our separate ways.

They believe at the moment it might be engine related on the low end, possible worn bearing.

The only other suggestion would be a engine replacement.
I'm wondering why the engine would only make a grinding sound during a shift after light acceleration and then give a throttle hesitation if it were a bearing. That doesn't sound right to me. Chassis ears should be used to track down the basic location of the sound. All dealers have them.
Are there any other noises that you ever hear?
The 3V is notorious for the original timing parts failing. Maybe after letting off the throttle to shift gears the oil pressure drops and makes the chain go slack for a second. The original chain tensioners tend to blow out the gaskets and the oil pressure drops in the system. The timing system is dependent on oil pressure to function properly. If the chain is grinding into the guides or the timing cover then you would hear a grinding sound. It could also give throttle hesitation if and when that were happening.
Hello and thanks for the informative feedback. I don't hear any additional sounds and will share this info with the dealership in hopes of finding a resolution.
Worn thrust washer on the crank? The tranny input shaft pushing into the crank. Should be easy enough to check using the method FordTechMakuloco used to check for excessive thrust clearance. Just a thought.
Thank you so much and will also share this with the dealership mechanics.

I provided the dealership with the suggestions above. They responded back with due the age of the vehicle they would not do internal repairs. Offered to do research to see if they can find a suitable motor as a replacement.
Do you have a video of the noise to share?
Unfortunately I do not, the vehicle has been at the dealership since January 11th and even if I could , not sure my phone would actually pick up the noise over the exhaust.
I have an update and completely embarrassed to post this after all the energy and work we have been through.

Today during my lunch break , decided to check the oil level and was not getting a good reading on the dipstick. Ran up to the local store, picked up the fluids and proceeded with an oil and filter change.

Cracked open the drain plug and didn't take long to realize it was dangerously low of oil.

Completed the job and took it out for a quick ride and all is back to normal.

The car is parked primarily in the garage and doesn't seem many miles as of lately. No oil leaks either. It's been a long time since an oil change.

Apparently I'm the freaking dipstick.
  • Like
Reactions: crjackson
The engine.
I'm surprised the low oil pressure light did not come on. Nonetheless I babied to hell out of it during this time and hopefully didn't do too much damage.
1 - 9 of 24 Posts