: slight miss-no codes



djais1801
04-06-13, 08:51 PM
ever since i picked up the truck...it has a slight, rough idle (slight miss)..i attributed this to needing plugs/wires as it hit 100,000 mi. replaced those and still feel the idle-could this be from leaking manifold gaskets (broken exhaust bolts)? if not, any other advice?

6lbsofSound
04-06-13, 10:37 PM
Have you tried cleaning the throttle body?

the cadillac man
04-07-13, 02:19 AM
Have you tried cleaning the throttle body?

My 03 does this and I cleaned the throttle body and put new plugs and the fuel pump is fairly new and it still has the funny idle(which bugs me to no end)

bigirb2002
04-07-13, 09:12 AM
just picked up my 05 4 weeks ago. mine dies this to. i have done all of the above. only thing i can think of is tps or o2 replacement

djais1801
04-07-13, 09:18 AM
If it was the TPS or O2... I would think a fault code would be produced... My throttlebody was okay

bigirb2002
04-08-13, 02:06 AM
read online they wont always set off a code. also read 2 cases where replacing the coil packs fixed the problem also

the cadillac man
04-08-13, 03:10 AM
read online they wont always set off a code. also read 2 cases where replacing the coil packs fixed the problem also

Me too and that can get pricey but may be worth the cost (for now I am putting up with it as I can't replace the coil packs)