Thread: 700R4 Failure
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Old 03-15-2012, 08:24 PM   #8
clinebarger
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Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 700R4 Failure

Quote:
Originally Posted by todd99 View Post
I would like to figure out if mine is wired correctly so I don't burn out the new trans and to figure out if my converter is still any good.
A non-functioning TCC will not cause the 3-4 clutches to fail. It will cause a lube curcuit problem when in 4th gear.
The top 4 reasons 3-4 clutches burn...
1. Low fluid level.
2. Low fluid level.
3. Low line pressure/rise....See #1 & #2 or TV misadjusted.
4. More HP/Torque than the clutches can handle.

You can make it lock-up with just a B+ going to the TCC solenoid with a pressure switch grounding when the trans shifts to 3rd/4th gear. But i highly recommend running the B+ through a "duel" brake switch to kill power when the brakes are applied.

Deep pans are worthless in my opinion....They kill more transmission than they save. If you insist on having one MAKE SURE it comes with a filter extension. Seems everytime I pull a Aftermarket deep pan...The filter is laying in the pan.

For anyone running a nonlock-up converter.....The lube curcuit needs to be modified with a "lube Valve/Plug" in the pump.
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