MY 2000 F-350 LAIRIAT LOST ITS POWER

What is your question?

I HAD NEVER PUT IT IN FIRST GEAR BEFORE TODAY I DID AND TOOK OFF RAN THE RPMS UP BEFORE I SHIFTED INTO 2ND THEN DRIVE AND IN THE NEXT THIRTY MILES IT HAS BEEN LOSEING POWER DID I SPIN THE TURBO OR WHAT ELSE COULD IT BE THE ABS HAS BEEN ON NOT RELATED BUT NO ENGINE LIGHTS OR ANYTHING ELSE BUT ITS JUST NO POWER.

What makes this problem better or worse?

More power when cold

How long has your 2000 Ford F-350 Super Duty had this problem?

Just did it