The site said to post this question under a previous question... so here we go! We have a 2002 Town & Country LXI 3.8. I'll try to give you the short story! We drove it to supper Saturday, then on the way home it began to chug & shake... like misfiring. Stopped driving, got a dolley & towed it home. My hubby pulled the codes & it gave P0204. Injector 4 issue. We started by testing the olms of injectors, all were 12 - 13 olms (I think) or normal! (( My hubby had plans tonight so it is just me to word this message - may sound girly - sorry ;-)) We got to looking online & found some folks that had melted injector harnesses. Looked at that & wholaa! The heat guard mesh looked fine, but underneath all the wires had lost their coating & were bare, about 1.5" from the main "big" plug, down about 6 inches or so. The wires were nice & coppery, but I am sure they were able to touch & that's not good. We figured this must be the issue! My dad rewired the harness, it is all put back together & taped up. We plan to stick a split heater hose or something around the bundle so it doesn't happen again... but ... we are still having issues. The thing is still chugging. Thought maybe we fouled a plug, so we replaced the #4.. it looked fine, wasn't wet or terribly black.. but for 10 bucks, just replaced it. The others seem to have spark. We started checking, removing them one at a time to see any change in motor. There is none. He checked the olms of the front 3 wires spark plug
wires & #2 was 8.5, #4 & #6 were 5.2, 5.3. Don't know if that is helpful.. We took a screwdriver and touched it to each of the front injectors, laid our ear on the end, & the spark noise in #4 injector was much weaker. So we thought maybe the injector was clogged or partially blocked... as we were not getting any codes at this time. So we replaced the #4 injector. Now the "tick" noise is nice & loud like the rest, but van is still chugging. Sounds like a very sick hot rod! So I hopped online again & started looking. We are thinking about trying to rent one of those noid light testers, if our autozone has one... but we seem to be getting spark & stuff.. Maybe the wiring harness is still the issue? My dad used to rebuild cars & my hubby too! So they kind of know what they are doing. My dad for sure! I am confident that the wires are all done correctly. So we don't know know what else to try. We are now pulling a P0204 code again. Hubby will try to switch them out & run codes again to see if the code changes with the switch. But should we try anything else? The computer might be bad? Maybe? Could all that wire exposed cause a permanent "mess up" in there? Could it be the catalytic converter? Maybe it fouled? (but wouldn't it put a code up?) The map sensor? Would that put a code up? All the others with melted wiring harnesses fixed them up & had running vans, so we were hopeful. But murphy is always around when we have a "project"... It's never the easy fix for us...lol. Just wondering if we are heading in the right direction & what else you folks would try. My hubby has no idea I am posting here, but he is so busy & if I can give him some possible solutions to check, it would sure help!! The van runs rough at idle & at acceleration... is a little slower to accelerate. Doesn't quit or stall, just chu chugs! And when it hits about 40mph it really starts to shake & vibrate. Has to be something with that #4 injector to keep pulling that code after we clear it out, right? Ok,,,, Thanks so much for any advice or insight!