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very bad transmission problem

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Old 05-21-2014, 10:01 PM
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Originally Posted by w0lvez
If it's overheating the pump is damage. When mating the Engine to the Transmission if the Torque Converter is not seated properly it will hit the Flex Plate..

Even with the transmission connector Disconnected, some gear ranges are still available in manual ranges because the circuits opened provide redundant passages to shift valves and apply components.

These passages are independent of the solenoid-controlled passages.

It will not Overheat if the pump is working.
Could you elaborate more on mating procedure?

Try running it with the connector unplugged?

You think the pump is bad? From me trying to get it to move in 2nd gear?
Old 05-21-2014, 10:31 PM
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Originally Posted by yeahford
Could you elaborate more on mating procedure?

Try running it with the connector unplugged?

You think the pump is bad? From me trying to get it to move in 2nd gear?
No, what I mean is the TC is not Seated Properly in the Tranny when it was installed.


It's either the pump is bad, oil seal is leaking or the TC is not seated properly to the pump.

Last edited by w0lvez; 05-21-2014 at 10:48 PM.
Old 05-22-2014, 08:33 AM
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Originally Posted by w0lvez
No, what I mean is the TC is not Seated Properly in the Tranny when it was installed.

How to correctly position the converter when installing a Ford AOD trans. - YouTube

It's either the pump is bad, oil seal is leaking or the TC is not seated properly to the pump.
I changed the front pump seal when it was out. The nuts had to draw the tc back out after the bell housing was tight to the engine. Had to have been seated correctly
Old 05-26-2014, 07:01 PM
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ll salvage yards say that 99 transmission is 99 only. Is it true? Would the electronics be different? What are the internal electronics? What would need to be changed? There is something that looks like a solenoid at the end of the gear selector inside. What does it do, would it need to be swapped?

Would be much appreciated if someone could answer these questions. Thanks
Old 05-26-2014, 09:41 PM
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Could it be the tcc solenoid? Is it possible to slide the tranny back far enough to work the converter? I said the bolts had to draw the tc back out. Shouldn't that mean I got it in all the way?
Old 05-27-2014, 10:11 AM
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What I mean is if the TC is not seated properly in the Tranny the Flex Plate could bump it in place that will surely damage the pump. You just need a Bi-Directional ScanTool that has the capability of displaying tranny PIDS.
Old 05-27-2014, 05:49 PM
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Originally Posted by w0lvez
What I mean is if the TC is not seated properly in the Tranny the Flex Plate could bump it in place that will surely damage the pump. You just need a Bi-Directional ScanTool that has the capability of displaying tranny PIDS.
I'm almost positive it was done right. I just read a thread that said the in trans wiring harness would need to be changed or the wires need to be switched around on the truck harness
Old 05-29-2014, 02:30 AM
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Originally Posted by yeahford
I'm almost positive it was done right. I just read a thread that said the in trans wiring harness would need to be changed or the wires need to be switched around on the truck harness
Did you lift the vehicle using 2 post Hoist when the transmission was installed? How was the tranny and engine block dowel pin matted? A seated TC can easily slip out of place when piloting the tranny to the block.

It's Stupid to assume it was installed properly since you said it the transmission was working properly before it was transferred. It's not like the old tranny which can easily be transferred without any issue. To make it more difficult instead of using a Bolt on Flex Plate to TC they replaced it with a stud and nut.

You said RPM changes when you step and release brakes so TCC is applying and releasing. You also said e Tranny is overheating in 2nd gear. If the Fluid is in proper level, even with partially clogged cooler lines it will not overheat that easily unless the pump is not pumping enough fluid. With Low Hydraulic Pressure even if the shift solenoids are working expect it not to shift.

It's just a SIMPLE COMMON SENSE.
Old 05-29-2014, 01:53 PM
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Originally Posted by w0lvez
Did you lift the vehicle using 2 post Hoist when the transmission was installed? How was the tranny and engine block dowel pin matted? A seated TC can easily slip out of place when piloting the tranny to the block.

It's Stupid to assume it was installed properly since you said it the transmission was working properly before it was transferred. It's not like the old tranny which can easily be transferred without any issue. To make it more difficult instead of using a Bolt on Flex Plate to TC they replaced it with a stud and nut.

You said RPM changes when you step and release brakes so TCC is applying and releasing. You also said e Tranny is overheating in 2nd gear. If the Fluid is in proper level, even with partially clogged cooler lines it will not overheat that easily unless the pump is not pumping enough fluid. With Low Hydraulic Pressure even if the shift solenoids are working expect it not to shift.

It's just a SIMPLE COMMON SENSE.
This isn't my first tranny install. It was seated correctly. What do you know about the differences between 98 and 99? Obviously there Is differences. If you can't vouch for that it's fine. Going to hear from my mechanic and tranny guy tonight
Old 05-29-2014, 08:04 PM
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I'm not sure if the 4r70w is different for the 4.6 and the 4.2, but I replaced the 4r70w in my 99 with one from a 98 and it has worked perfectly fine. These were both mated to the v6 however.


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