88 D100 issues

One guy online was saying it was his EGR valve that was causing all his problems, changed it all good now.

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Out of the ordinary, some are asking if the lock up torque converter is locked up not releasing?

Wonder if there is a way to temporarily disconnect that to test, like pulling a plug on the trans?

20201027_110940.jpg

3 pins on the plug = lockup converter
2 pins on plug = No lockup converter