[deer hunter]

Hi guys, sorry about lack of info; I drive a 99 caravan 160 000kms, 3 liter, I've owned it for 2 years always regular oil changes, trans fluid is good not burnt I've never changed it. I did have to replace oil pump and seals 1.5 years ago. The only problem I've had recently is my gauge cluster going out and having to resolder the connections in the back of it. As for plugs I haven't replaced since last service (1.5 years). I did clear code and it returned on start up. This is also the first time engine started to "rattle" (when I started van day after code appeared). As I said, I shut off van let sit for 15 minutes and restarted no "rattling" afterward. I drove van yesterday with no problems and no hesitation but engine light still on. I took off distributer cap and checked for carbon build up, cap and rotor look in good condition. Checked plug wires to be sure all seated properly, but I have not checked at night for arcing. As for the coil I'm not very good at electrical any help locating and how to test is appreciated. Hope this info helps, I'm going to go out and try to locate the coil and check the connections. When I say "last service" I meant when I had to have oil pump replaced, I do all my own service (if I can); air filters and so on. Thanks again