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th400 trans brake question

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Old 06-08-2009, 07:47 AM
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Default th400 trans brake question

when i hit the button the car will roll about 2-3 feet before it engages. then if i let off the button and hit it again it engages right away. is that a sign the trans is getting tired. it makes it a little tough to stage.
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Old 06-08-2009, 10:24 AM
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Pull the solenoid and check to make sure the t-brake vbalve moves freely in the bore first.Then post back

greg
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Old 06-08-2009, 08:43 PM
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Originally Posted by FTICONVERTERS
Pull the solenoid and check to make sure the t-brake vbalve moves freely in the bore first.Then post back

greg
do you have a picture of what im looking fo/r
Old 06-08-2009, 09:45 PM
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May not be your problem but mine did this in my big car (69GP) and it was caused by putting the solenoid wire ground using one of the pan bolts. This happened about a year later after the original install, then I moved the ground wire to a bell housing bolt (iron block) and the problem was solved. Check the voltage going to the solenoid when it is activated.
Old 06-08-2009, 11:21 PM
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I had the same issue and ended up running the power directly from the battery..problem solved.

check you power and make sure you have a really good ground
Old 06-09-2009, 06:43 AM
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nice thanks guys ill check it out.
Old 06-09-2009, 05:53 PM
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I do not have a pic but simply pull the solenoid off and mash the valve. It will have a spring and it should travel freely.Also as others have mentioned make sure you have a good ground. Shame on me for assuming you had a good ground...

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Old 06-10-2009, 06:46 AM
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its actually grounded to the soldnoid inside the pan. the only wire i have is the power trigger. would being low on fluid cause this? i check the stick but is a locar and stucks a$$
Old 06-10-2009, 09:21 AM
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So this unit has an internal brake. Different story. Yes if the fluid is low it could cause a problem . At this point the proper thing to do would be install a pressure gauge and check the line.


Greg
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Old 06-10-2009, 12:09 PM
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Originally Posted by FTICONVERTERS
So this unit has an internal brake. Different story. Yes if the fluid is low it could cause a problem . At this point the proper thing to do would be install a pressure gauge and check the line.


Greg
what pressure should it be at? what type of gauge.




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