JB,

I HIGHLY recommend these three Posts/Articles:

http://www.peachparts.com/shopforum/showthread.php?t=158216&highlight=critical

http://peterschmidtransmission.com/

http://www.continentalimports.com/ser_ic20242.html

Further thought:Kickdown switch underneath the Accelerator Pedal might be bad.

And yes it has the K-1 (Along with half the rest of the Alphabet.)

I'm not as "up" on the Transmission as I should be...

If you can interface with STEVEBFL he may be able to assist you further.

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'84 300SD sold
124.128