Hello mga sir! I have a Nissan Exalta Grandeur 02 A/T. My problem is minsan hindi nagsshift from 1st gear to second gear yung transmission kahit inaabot na ng 4k yung RPM sa tachometer. Then minsan bigla naman siya magdown-shift then hindi na mag-upshift. Most of the time pati nangayayari siya kapag galing yung kotse sa matagal na pahinga (overnight na di nagamit). Then after I re-start the car, nawawala na ulit yung problem. I had it checked yesterday and hindi daw sliding yung tranny sabi nung mechanic. Ano pa kaya pwedeng maging cause nung problem sa tranny? Salamat!