• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Automatic Transmission Problems

  • Thread starter Thread starter 1997GTJF
  • Start date Start date May 31, 2016
1

1997GTJF

New Member
Jan 24, 2009
10
0
1
May 31, 2016
#1
  • May 31, 2016
  • #1
Hi guys , I've started having problems with my automatic transmission on my 2000 GT 4.6 V8.

When accelerating it shifts into 2nd perfect but it doesn't seem to like shifting into 3rd under load, as soon as you come off the throttle it then changes into 3rd ok, but on the throttle it will just stay in 2nd gear.

The strange thing is it goes into 3rd gear after kicking down ok but it's just the initial first time you accelerate it doesn't under load

Could it be the vacuum modulator ?

I've checked the fluid and the level seems ok , fluid looks a pink/red colour still and it doesn't smell of burning or anything.

The car has done 114k miles but I thought the transmission should have lasted a lot longer than that ?

Thanks for any help.
 
1

1997GTJF

New Member
Jan 24, 2009
10
0
1
Jun 1, 2016
#2
  • Jun 1, 2016
  • #2
Quick update , it seems to be the overdrive that is causing the problem , I switched the overdrive off when I drove it this morning and it seems ok but as soon as it's turned on I think everytime the car tries to shift into overdrive its slipping out of gear .

Any ideas ? Thanks
 

Cobra42898

Member
Jun 23, 2015
47
9
18
Gouldsboro, PA
Jun 2, 2016
#3
  • Jun 2, 2016
  • #3
I would start with a fresh drain of the fluid, including dropping the pan and changing the filter, and drain the TC if it has a plug. Refill with Mercon v, not the regular Mercon. The difference is important. Don't take it somewhere and do one of those flush deals. Full drain, full refill.
 
You must log in or register to reply here.

Similar threads

S
Drivetrain Downshifting from 3rd to 2nd issue
  • Scott_S
  • Apr 23, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
24
Views
830
Fox 5.0 Mustang Tech Jun 14, 2026
Mindseye007
Mustang II 4 cyl gear hunting and possibly messed up vacuum system
  • oesterreicher
  • May 31, 2026
  • 1974 - 1978 Mustang II Talk & Tech
Replies
11
Views
346
1974 - 1978 Mustang II Talk & Tech Jun 14, 2026
manicmechanic007
C
1992 LX 2,3, automatic problems, oil dissapears.
  • Carpimp
  • Aug 10, 2025
  • 2.3L (N/A & Turbo) Tech
Replies
2
Views
221
2.3L (N/A & Turbo) Tech Aug 10, 2025
General karthief
S
1965 289 xmission
  • sctang
  • Nov 15, 2025
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
3
Views
209
1965 - 1973 Classic Mustangs -General/Talk- Nov 30, 2025
Mcmahst
A
2001 Mustang GT, scorched metal smell and noise from trans/diff?
  • AndyE2255
  • Dec 1, 2025
  • SN95 4.6L Mustang Tech
Replies
4
Views
485
SN95 4.6L Mustang Tech Dec 28, 2025
gkomo
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?