Engine/Transmission (1998.5 - 2002) Transmission TC locking in and out

[BLassiter]

Okay, I have done the suncoast method. I have done the DTT noise filter, I have isolated alternator wires and the problem still arrises. Are there any other possible remedies for the transmission TC locking in and out randomly. This problem is about to get on my last nerves. Is my apps possibly going bad now? I have adjusted the voltage to make it consistent with the label and still have problems. Any help would be greatly appreciated. Thanks in advance. I know there are other threads on here but I just cant find something that has helped me.

 

[SUrich]

Your torque converter lockup soleniod on your valvebody could be failing. Mine was doing the same thing at about 150,000 m changed that and problems went away. Sometimes when the soleniod gets hot it will creat an open circut in it. Not saying this is the problem but that is what I found with mine.

 

[BLassiter]

My transmission is not even 6 months old =( guess ill be calling suncoast tomorrow (how difficult is it to change the solenoid?)

 

[Huff N Puff]

Here is a list of every thing simple that usually takes care of it

Okay, I have done the suncoast method. I have done the DTT noise filter, I have isolated alternator wires and the problem still arrises. Are there any other possible remedies for the transmission TC locking in and out randomly. This problem is about to get on my last nerves. Is my apps possibly going bad now? I have adjusted the voltage to make it consistent with the label and still have problems. Any help would be greatly appreciated. Thanks in advance. I know there are other threads on here but I just cant find something that has helped me.

Start with cleaning and tightening the battery cables,testing both batteries,check alternator diodes,last but not least check sensor ground, it is the ground behind the starter. Take it of clean the block with sand paper and retighten it. All these issue can drive most of the sensors crazy especially the APPS.

 

[Fishin Guide]

From your sig you have an aftermarket trans. Make sure there is a resistor in the PCM wiring. If not, we use DTT voltage regulators. The noise filter will help with the cycling, but it can't fix incorrect voltage.



Other primary causes are electrical issues from the batteries first, then battery cables/ posts, wiring, alternators, and APPS.



Dave