when i bought this mj 86 2.5 auto 2wd it would bog down bad at 70 and drink gas bad i replace the fuel filter. gas mileage got 85 % better. I notice today it still loosing fuel or fire one going down the rd at 70 mph but it only does it for just a few 3-5 seconds at a time then it picks back up every time what do ya think it is i have put on new plugs, cap, wires, rotor button, coil thanks