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These recommendations do not cover all possibilities. They are some things to check before you have your transmission rebuilt. Always check transmission fluid level first. Always run a scanner on any computer controlled transmission. On modulated transmissions make sure they have enough vacuum.

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FIND THE MAKE OF YOUR VEHICLE
CLICK ON THE YEAR OF YOUR VEHICLE

3000GT 1991-99 3.0LF4A33-1      
CORDIA 1983 1.8L 1984-88 1.8 / 2.0L    
DIAMANTE 1992-96 3.0L 1997-01 3.0L 1997-2004 3.0L 3.5L  F4A51  
ECLIPSE 1990-98 1.8 / 2.0L 1996-01 2.4L 1996-2005 3.0L F4A51 2000-2005 2.4L F4A42
EXPO 1992-94 1.8 / 2.4L 1992-93 1.8 / 2.4L all whl dr    
GALANT 1985-93 2.0 / 2.4L 1991-92 2.0L all whl dr 1995-98 2.5L V-6 A604 1999-2003 3.0L F4A51
1999-2003 2.4L F4A42
MIRAGE 1985-1990 1.5 / 1.6L 3SPD 1993-98 1.5 / 1.8L 4SPD 1998-2002 1.5  1.8L F4A41   F4A42  
MONTERO 1983-86 2.6L 3spd 4x4 A904 1987-89 2.6L 4X4 A44D 1990-5/94 2.6 / 3.0L 4X4 A44DL 6/94-00 3.0 / 3.5L 4X4  A340F
PICKUP 1987-89 2.0 / 2.6L A44D 1990-97 2.4L A500    
PRECIS 1987-95 1.5L 3spd      
TREDIA 1983-88 1.8 / 2.0L      
Van/Wagon 1987-90 2.4L A44DL      


 

 

 

F4A / KM SERIES TRANSMISSIONS
The transmissions above are front wheel drive 3 & 4 speed automatic transmissions. They are computer and throttle pressure controlled.  Common symptoms are transmission shifting erratic, slipping or not shifting at all. Also the check engine light can come on.

External sensors like the throttle position sensor, vehicle speed sensor, output speed sensor and inhibitor switch quite often go bad, causing these symptoms.
Check the throttle pressure cable that goes from your transmission to your carburetor or throttle body depending on the configuration of your engine. Always run a scanner first to see if a sensor is causing your problem.

Most of these style transmissions have sensors called pulse generators that plug into the top of the transmission. Two things can happen, the sensors can go bad, or a lot of people mix up the two sensor wire connectors by not marking them. They plug them in wrong, because they look identical. These two things can cause the transmission not to shift. Keep this in mind.

There are many variations to these transmissions. Many of the units above have an transaxle identification number located on the fender shield in the engine compartment. The transaxle case housing usually has a identification number located on it also.
 

 

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A500
The transmission above is rear wheel drive 4 speed automatic that is computer and throttle pressure controlled.  Common symptoms are transmission shifting erratic, slipping or not shifting at all. External sensors on the vehicle like the throttle position sensor , vehicle speed sensor and even the neutral safety switch going bad can cause these problems.

Always run a scanner first and check your throttle pressure cable and adjustment to see if they are causing the problems.

 

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Torqueflite 904
The transmissions above are 3 speed automatics and shift timing is controlled by a throttle pressure cable and or rod that connects from the transmission to the carburetor or throttle body. Always check this cable or rod first.  They can cause erratic shifts and or no shifting at all. Also check the clutch fan that is located at the front of the engine.  Sometimes they  seize up, this causes the engine to sound unusually loud almost like the transmission is not shifting into 3rd gear.

Keep in mind sometimes people work on the carburetor's of these vehicles and they forget to either hook up the throttle pressure rod correctly or they forget to reinstall the little return spring for the throttle pressure rod.

 

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A44D / A44DL
The transmissions above are rear wheel drive 4 speed automatics and shift timing is controlled by the computer and a throttle pressure cable that connects from the transmission to the carburetor or throttle body.
Always check these items first before your purchase a transmission. 


Always run a scanner first and check your throttle pressure cable and adjustment to see if they are causing the problems.

Check the shift solenoid that attach to the transmission casing, sometimes they can go bad, Causing no 4th gear.

 

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A604
The transmission above is a 4 speed front wheel drive automatic, that is all computer controlled. If your transmission starts shifting erratic or stays in second gear only, then make sure you or a shop run a scanner on the vehicle.  You want to see if you have a sensor that has gone bad causing your problems. Also make sure you check the clutch volume index (c.v.i.).  This helps determine the condition of the transmission. Chevy's and Ford's do not have this neat little feature.

Vehicle's with A604 transmissions have chronic input and output speed sensor problems and also with the little wire connectors to those input and output speed sensors.  The dealer offers a repair kit for these wires instead of buying a whole new wire harness.

 

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A340F
The transmission above is a rear wheel drive 4 speed automatic transmission. They are computer and throttle pressure controlled.  Common symptoms are transmission shifting erratic, slipping or not shifting at all. Also the check engine light can come on.

External sensors like the throttle position sensor, vehicle speed sensor or output speed sensor quite often go bad, causing these symptoms. 


Always run a scanner first to see if a sensor is causing your problem. Also check the throttle pressure cable that goes from your transmission to your carburetor or throttle body depending on the configuration of your engine.



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F4A51   F4A42  F4A41

The transmission above is a front wheel drive 4 speed automatic transmission. They are computer controlled.  Common symptoms are transmission shifting erratic, harsh or erratic reverse. Also the check engine light can come on.

External sensors like the throttle position sensor, vehicle speed sensor, can go bad, causing these symptoms. Always run a scanner check first to see if a sensor is causing your problem.
This transmission has problems with valve body wear, along with common solenoid problems. The case bores where the accumulators ride can and do wear out often. The plantaries and pumps also wear out,
be care full. Upgrade to a cast iron pump if you can.


 

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