Hello everyone! This is my first post here I've been following the forum for quite a while though. Definitely my fav forum!
I've found all the info for all my maintenance and troubleshooting through the search feature. This time though I'm stumped.
I've got a 2000 3.4 and everything was fine. Absolutely love the truck. I am running into a problem after the truck has warmed up. It starts to idle rough, drives fine but as I slow down, park, stop, or reverse it idles rough. Like it's surging. I've swapped out the plugs, wires, maf, air filter. It ran fine after the plugs and wire swap (oem). 2 weeks later it's back at it again. Not sure if this has anything to do with it but i swapped the head unit out for an aftermarket one a couple days before it started happening again. I just put in some injector cleaner a couple days ago to see if it clears things up but it doesn't seem to be doing anything. We'll see in a couple more days.
Any suggestions or comments? My engine light has come on again so I'm going to get it scanned again but am pretty sure I'm going to get the same misfire codes. I don't think it's the coil packs cause I get the misfire on one cylinder. Seems to be a common problem. Anybody ever get this fixed?