comonly ask trans Questions
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comonly ask trans Questions
TRANSMISSION COMMON QUESTIONS AND ANSWERS
1-What size are the TORX screws that holds my bellhousing to my transmission, and what is the best way to remove them?
The bit is called a T50 plus and is available from sonnax and snapon. However, you can use a modified T50. Purchase a quality T50 bit and grind about 1/32 inch off the end. Do not use the bits with a hole in the end. The grind amount is approx. as it varies from one brand to another, but the goal is to grind until the bit fits tight in the screw head. The bits get progressively larger as they get near the top, so grinding more off effectively makes the bit larger. Then bear in mind that the screws are held in with red loctite, so they are held in fairly tight. Use small propane torch (the ones that cost around 5 dollars at the hardware store) and heat the thread end (not the bolt head) to around 275 to 300 degrees. Then (generally) the screws will come right out. Make sure you have the bit lined up straight in the screw, and keep it that way. Do not use an impact wrench - if it jumps out it will strip the bolt. Then you would have a much larger problem.
2-Why doesn’t my speedometer work?
Check that the Vehicle Speed Sensor (for 4L60E/65E) or speedometer cable (for 700R) is connected. On 4L60E/65E units this may cause a no shift situation or erratic shifts. Note: The 700R4 does not have the correct speedometer gears installed, so you must take the gears and driven assembly from your old unit and install them on the new 700R4.
3- My new transmission is installed, and it doesn’t shift. It also feels like it is slipping or in a higher gear than what I expected.
Check that the wiring harness is fully plugged into the transmission, Check all fuses, and see if the engine SES light is on (you can also scan for codes), If the SES light is on, or codes are present, this is generally considered an electronics issue. If it’s a 700R4, did you hook up the TV cable?
4-I have a 3000 or higher stall converter and I just installed my new 4L60E. When I drive normally everything feels great, but at full throttle I bounce off the rev limiter.
Many 4L60E cars with a stall at or over 3000 rpm may require the tuning parameters for speed and rpm be reconfigured to compensate for the higher stall. (This is sometimes refered to as stall wall)
5-I just installed my new transmission (or converter) and it does not move. What could be wrong?
The most common reason for this is that the converter was not fully seated in the pump, which should have shown itself when there was difficulty turning the converter, Provided you have enough fluid in it. Remove one line from the transmission cooler, Start the vehicle and fluid should come spraying out, If this does not happen, you may have broken the pump and will need to remove the transmission and repair. Hopefully, you have not destroyed converter.
6-How much fluild do I need for my install,
Get a case and add till full you may have a couple left over but its better to have that than not enough when all the stores are closed.
8-My converter in my 4L60/65 dosent lock up or only locks up intermitantly.
The most common cause of this issue is misfire it may not show as a code but in some cars will cause the SES light to blink irrratically, Also note the engine temp must be above 135 f for the PCM to allow lockup. If you have and SES light on as always scan for codes first then contact us for help.
9-I was driving my car at WOT and it would not shift into 4th whats wrong?
Nothing unless you have the 4L60E PCM programed to make a WOT 4th shift it is disallowed in the factory tune. The 700R4 alternatley cannot do a WOT shift into fourth unless it has a modiied TV plunger sleeve .
10-My 700R4 or 4L60E will shift from first to second even when I have it in manual low is something wrong?
No both trans, but for different reasons are comanded to upshift at very high rpm or speed from first gear, Each require a special shift kit to avoid this, This kit is only available in our level 3 units.
11- My speedometer is not working and my car wont change gears,
Check for codes and the wiring of your VSS (vehicle speed censor) this measure ment is required for shifts to properly occur.
13 – What’s this little bag of seals for that came with my transmission?
That bag contains seals for different applications. You may, or may not, need some of them. Just use what you need to install your particular transmission and do not worry about the rest.
16 - How do I test my stall speed?
Truly accurate testing of a converter stall is nearly impossible once you install it in your car. You can get some idea using a transbrake. Barring that, the next best thing would be to put the car in limp mode, 3rd gear, and nail it suddenly. Then watch the tach. The rpm it flashes to is close to your stall speed. Brake stalling is meaningless and gives no useful information.
17 - There is a clunking sound when my car shifts. What could it be?
Check the torque arm and mount. They are the most common reasons.
18 - My car has second gear start capability and/or a performance shift button. Will these still work with your transmission?
Yes these are functions of the PCM not the transmission. They will continue to function as they did before, although a bit enhanced in the performance mode.
19-My car cannot select first gear or has no first gear position. Why, and what can I do?
Some models have a plastic stop formed in the gate. Simply remove the console, cut off the plastic piece, and you will be able to select 1st gear manually.
20-I just installed my converter and I’m getting code PO7xx. What’s wrong and what should I do?
These codes are sometime set when a high stall (usually higher than 3000) is installed, but not always and not always immediately. They can be corrected through tuning when the PCM does not understand the RPM/SPEED offset with the new converter. From my understanding this involves removing the test for the code, not simply clearing the code.
24-Do I need to have a cooler with my converter or transmission?
The answer to this question is yes and we furnish every unit with one. While not having a cooler is not going to cause your transmission to die tomorrow, heat will kill it in the long run by hardening seals and gaskets. Having a stall converter will only compound this problem. Installing a cooler is just a good idea.
26-I just changed my rear end ratio. Now my transmission doesn’t shift right. It shifts too early or too late. What is wrong, and what should I do?
When making a gear change it is necessary to reprogram the PCM for the new gear ratio. This must be done with some form of tuning software.
27-EFILIVE can remove test for the code PO757 caused by high stall converters on the 05/06 GTOs
Note some numbers are skipped this is because this info is taken from our FAQ page http://performabuiltautomatics.com/hauler/FAQ.html And some information only pertains to our products and this is and information thread.
__________________
1-What size are the TORX screws that holds my bellhousing to my transmission, and what is the best way to remove them?
The bit is called a T50 plus and is available from sonnax and snapon. However, you can use a modified T50. Purchase a quality T50 bit and grind about 1/32 inch off the end. Do not use the bits with a hole in the end. The grind amount is approx. as it varies from one brand to another, but the goal is to grind until the bit fits tight in the screw head. The bits get progressively larger as they get near the top, so grinding more off effectively makes the bit larger. Then bear in mind that the screws are held in with red loctite, so they are held in fairly tight. Use small propane torch (the ones that cost around 5 dollars at the hardware store) and heat the thread end (not the bolt head) to around 275 to 300 degrees. Then (generally) the screws will come right out. Make sure you have the bit lined up straight in the screw, and keep it that way. Do not use an impact wrench - if it jumps out it will strip the bolt. Then you would have a much larger problem.
2-Why doesn’t my speedometer work?
Check that the Vehicle Speed Sensor (for 4L60E/65E) or speedometer cable (for 700R) is connected. On 4L60E/65E units this may cause a no shift situation or erratic shifts. Note: The 700R4 does not have the correct speedometer gears installed, so you must take the gears and driven assembly from your old unit and install them on the new 700R4.
3- My new transmission is installed, and it doesn’t shift. It also feels like it is slipping or in a higher gear than what I expected.
Check that the wiring harness is fully plugged into the transmission, Check all fuses, and see if the engine SES light is on (you can also scan for codes), If the SES light is on, or codes are present, this is generally considered an electronics issue. If it’s a 700R4, did you hook up the TV cable?
4-I have a 3000 or higher stall converter and I just installed my new 4L60E. When I drive normally everything feels great, but at full throttle I bounce off the rev limiter.
Many 4L60E cars with a stall at or over 3000 rpm may require the tuning parameters for speed and rpm be reconfigured to compensate for the higher stall. (This is sometimes refered to as stall wall)
5-I just installed my new transmission (or converter) and it does not move. What could be wrong?
The most common reason for this is that the converter was not fully seated in the pump, which should have shown itself when there was difficulty turning the converter, Provided you have enough fluid in it. Remove one line from the transmission cooler, Start the vehicle and fluid should come spraying out, If this does not happen, you may have broken the pump and will need to remove the transmission and repair. Hopefully, you have not destroyed converter.
6-How much fluild do I need for my install,
Get a case and add till full you may have a couple left over but its better to have that than not enough when all the stores are closed.
8-My converter in my 4L60/65 dosent lock up or only locks up intermitantly.
The most common cause of this issue is misfire it may not show as a code but in some cars will cause the SES light to blink irrratically, Also note the engine temp must be above 135 f for the PCM to allow lockup. If you have and SES light on as always scan for codes first then contact us for help.
9-I was driving my car at WOT and it would not shift into 4th whats wrong?
Nothing unless you have the 4L60E PCM programed to make a WOT 4th shift it is disallowed in the factory tune. The 700R4 alternatley cannot do a WOT shift into fourth unless it has a modiied TV plunger sleeve .
10-My 700R4 or 4L60E will shift from first to second even when I have it in manual low is something wrong?
No both trans, but for different reasons are comanded to upshift at very high rpm or speed from first gear, Each require a special shift kit to avoid this, This kit is only available in our level 3 units.
11- My speedometer is not working and my car wont change gears,
Check for codes and the wiring of your VSS (vehicle speed censor) this measure ment is required for shifts to properly occur.
13 – What’s this little bag of seals for that came with my transmission?
That bag contains seals for different applications. You may, or may not, need some of them. Just use what you need to install your particular transmission and do not worry about the rest.
16 - How do I test my stall speed?
Truly accurate testing of a converter stall is nearly impossible once you install it in your car. You can get some idea using a transbrake. Barring that, the next best thing would be to put the car in limp mode, 3rd gear, and nail it suddenly. Then watch the tach. The rpm it flashes to is close to your stall speed. Brake stalling is meaningless and gives no useful information.
17 - There is a clunking sound when my car shifts. What could it be?
Check the torque arm and mount. They are the most common reasons.
18 - My car has second gear start capability and/or a performance shift button. Will these still work with your transmission?
Yes these are functions of the PCM not the transmission. They will continue to function as they did before, although a bit enhanced in the performance mode.
19-My car cannot select first gear or has no first gear position. Why, and what can I do?
Some models have a plastic stop formed in the gate. Simply remove the console, cut off the plastic piece, and you will be able to select 1st gear manually.
20-I just installed my converter and I’m getting code PO7xx. What’s wrong and what should I do?
These codes are sometime set when a high stall (usually higher than 3000) is installed, but not always and not always immediately. They can be corrected through tuning when the PCM does not understand the RPM/SPEED offset with the new converter. From my understanding this involves removing the test for the code, not simply clearing the code.
24-Do I need to have a cooler with my converter or transmission?
The answer to this question is yes and we furnish every unit with one. While not having a cooler is not going to cause your transmission to die tomorrow, heat will kill it in the long run by hardening seals and gaskets. Having a stall converter will only compound this problem. Installing a cooler is just a good idea.
26-I just changed my rear end ratio. Now my transmission doesn’t shift right. It shifts too early or too late. What is wrong, and what should I do?
When making a gear change it is necessary to reprogram the PCM for the new gear ratio. This must be done with some form of tuning software.
27-EFILIVE can remove test for the code PO757 caused by high stall converters on the 05/06 GTOs
Note some numbers are skipped this is because this info is taken from our FAQ page http://performabuiltautomatics.com/hauler/FAQ.html And some information only pertains to our products and this is and information thread.
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