Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 700r4 TC won't Lock-up
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Old 10-02-2012, 09:18 AM
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Crosley Crosley is offline
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Quote:
Originally Posted by Ted's37 View Post
Which is the most likely to fail, the TCC or the valve?

Thanks for your responce
Either can fail. the valve in the pump may be stuck.

Installing a check ball in the end of the solenoid , then re-install the l/up solenoid back into the pump... this will cause the converter clutch to lock up with the shift to 2nd gear if the converter lock up is operating correctly.

With the check ball in place, the solenoid is effectively closed full time to move the l/up valve in the pump.

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