check engine lgt
 

gotta 1997 psd reg cab 4x4 - i was getting on to the highway today accelarating at a normal speed, still accelarating about 50mph and for a split sec. it felt loss of power and then check engine light came on-i cont. to drive to work under the speed limit - now everything seems fine -light is off now-does anyone have any idea what that was.

have you scanned it for a code?

Well the list long. Could have been transmission codes (slipping, etc.) CPS, any number of loose electrical connections, etc, etc. Only way to tell is to have it scanned for stored codes.