[joemffields]

engine runs real smooth at both idle and under load, all the parts that i listed have been replaced within the year, the truck would start acting up, and i check my haynes manual, do the test from the book, if they weren't within the parameter i would then take them to my local parts store and then have them run the same test. if it was indeed bad i would replace it. I have had some bad luck with this truck lately. and everything i have replaced it needed, because before it wouldn't run or it would even start. i have looked for vaccum leaks i can't seem to find any, i've tried the hose to one ear and move it around to various places. i have a built in voltmeter in the dash and it doesn't move once the vehicle is on, if you know a good way to test it please inform me. i have recently had the whole intake system apart and have cleaned it all, from air filter to intake ports on the cylinder heads. i installed iridium plugs, but that was like a year ago and it hasn't had this problem the whole time. Thank you