Tranny problems

ConvBlkStang2NV · 01-15-2006, 04:47 PM

I have a 94 GT AOD. My problem is when I push on the gas it red lines and won't shift to the next gear unless I left my foot off gas and reaply it. Is my problem the transmission or the computer problem.

Gearhead999 · 01-15-2006, 05:01 PM

Mistake posted twice.

Gearhead999 · 01-15-2006, 05:02 PM

AOD's shifting aren't controlled by the computer. AODE's are computer controlled.

Check the adjustment of the TV cable. If the adjustment is correct, you have an internal transmision problem.

84LX89GT · 01-18-2006, 08:15 PM

More than likely it's an internal trans problem. Check the condition of the fluid, if it's burnt then probably the intermediate clutches are going out (i believe AODE has clutches and not a band off the top of my head). Something that is very common in those transmissions is the accumulator pistons wearing out, i had a 2-3 accumulator piston wear out in the '97 crown vic police car i had and it did exactly what you're describing just into 3rd gear - cost $5 to fix plus fluid. I don't remember if you have to pull the valve body to access the 1-2 accumulator or not, but that's probably where i'd look. It's hard to tell without a line pressure gauge, the AOD based trannies have lots of pressure ports that give good info. Other possibilities are sticking valve body valves, seperator plate gasket leak, intermediate clutch piston o-ring leak/burnt clutches or there could be a shift solenoid that isn't operating if it's skipping 2nd altogether.
Is the check engine or O/D light on?

Jeff Chambers · 01-18-2006, 10:07 PM

94 was an AODE, so the shifts are managed by the PCM....if the trans is healthy. Sounds like your problems are mechanical, internal to the trans. Is the transmission original to the vehicle?

ConvBlkStang2NV · 01-19-2006, 12:45 PM

Yes the tranny is original and no, my check engine or did my O/D lights did not come on. I was just recently told that it could also be my sensor.

01-15-2006, 04:47 PM	#1
ConvBlkStang2NV Registered Member Join Date: Jan 2006 Posts: 2	Tranny problems I have a 94 GT AOD. My problem is when I push on the gas it red lines and won't shift to the next gear unless I left my foot off gas and reaply it. Is my problem the transmission or the computer problem.

01-15-2006, 05:01 PM	#2
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Re: Tranny problems Mistake posted twice. __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

01-15-2006, 05:02 PM	#3
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Re: Tranny problems AOD's shifting aren't controlled by the computer. AODE's are computer controlled. Check the adjustment of the TV cable. If the adjustment is correct, you have an internal transmision problem. __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

01-18-2006, 08:15 PM	#4
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	Re: Tranny problems More than likely it's an internal trans problem. Check the condition of the fluid, if it's burnt then probably the intermediate clutches are going out (i believe AODE has clutches and not a band off the top of my head). Something that is very common in those transmissions is the accumulator pistons wearing out, i had a 2-3 accumulator piston wear out in the '97 crown vic police car i had and it did exactly what you're describing just into 3rd gear - cost $5 to fix plus fluid. I don't remember if you have to pull the valve body to access the 1-2 accumulator or not, but that's probably where i'd look. It's hard to tell without a line pressure gauge, the AOD based trannies have lots of pressure ports that give good info. Other possibilities are sticking valve body valves, seperator plate gasket leak, intermediate clutch piston o-ring leak/burnt clutches or there could be a shift solenoid that isn't operating if it's skipping 2nd altogether. Is the check engine or O/D light on? __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

01-18-2006, 10:07 PM	#5
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Tranny problems 94 was an AODE, so the shifts are managed by the PCM....if the trans is healthy. Sounds like your problems are mechanical, internal to the trans. Is the transmission original to the vehicle? __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

01-19-2006, 12:45 PM	#6
ConvBlkStang2NV Registered Member Join Date: Jan 2006 Posts: 2	Re: Tranny problems Yes the tranny is original and no, my check engine or did my O/D lights did not come on. I was just recently told that it could also be my sensor.

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