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

96 GT automatic transmission problems

  • Thread starter Thread starter epwojo
  • Start date Start date Aug 26, 2009
E

epwojo

New Member
Mar 9, 2009
3
0
0
Aug 26, 2009
#1
  • Aug 26, 2009
  • #1
On the 1-2 upshift, the transmission acts like it doesn't want to shift, almost like it tries to shift than tries to down shift itself. And this is when there is a heavy load in the car, or i am really getting on it. And sometimes when it happens, i let off the gas pedal and it downshifts really hard into first.

Took it to aamco transmissions, and no codes came up. Took out the PMC, and checked everything over. All looked good.

Any ideas?
 

CobraRed_96_GT

Active Member
May 20, 2006
1,421
4
39
UCSD/La Jolla
Aug 26, 2009
#2
  • Aug 26, 2009
  • #2
Do a search, it's the 1-2 accumulator piston/housing. It's from prolonged periods of heat wear due to poor heat exchanging by the stock set-up. Your torque converter is likely soon behind. Get a B&M super cooler, change out the accumulator piston pieces (dont need to drop trans, just pan), then fill with Mercon V and you should be set as long as you cross your fingers.
 
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