my truck was on a dianogic machine and the machine keeps reading fuel is rich and then goes to lean about a second apart the idle surges 3 mechanics and a new throttle position sensor and o2 sensor a temp sensor new themostat and $600 later it stills runs the same if you barely push on the gas it will slowly get to 55 but if you push down more than a 1/4 inche on the pedal it will die please help
Oct 2, 2009 at 8:50 AM