when i start it and try to go it acts like its bogged down.after a min. it runs fine. has 115000 miles .i put new plugs cap rotor.the check eng lite works but does not come on .if you run it for and hour and stop turn it off for 5 min. bogged down ... was thing cat but that should throw a o2 code..maybe fule filter.but that should pop up code..the 97 astro i had befor this one could not get light to go off.this one wont come on .. im lost need help. thanks