hey all,

my 97 yukon 5.7L suddenly starts acting up on start-up. always fired 100% now hit and miss as if throttle position sensor is not there. if i hear the fuel pump fire up then it usually is ok but seems like no idle kickup for start. press peddle slightly and usually with a snort and buck it will come to life. got home and pulled fuel pump relay and it was quite warm. any help would be great, thanks. p.s. when i checked auto parts for relays, surprisingly, they all listed continuous duty as NO. WHAT? a 3 hour drive seems like continuous to me