Originally Posted by TexTruck
The van is the sport model 3.8 litre. I brought it to the garage about 3 weeks ago with what seemed like a misfire. The check engine light came on and went out so I figured there'd be a code stored. (There should be right?) However the guy at the garage says nothing is stored. So I had him change the plugs and wires since it needed to be done anyhow. Everything seemed fine then this past weekend bango same problem but it comes and goes. The check engine light comes on and goes out again. I bring it to another garage as the previous crowd gave me a bad vibe. So they tell me it has a history code of a misfire. But that's all it seems to running fine now and to just wait. Can someone tell me what the general list of things to do is once you know it's a misfire and if the info I was given is even sensible?
check compression on the cylinder that is misfiring. there are other things you can check like spark (coil, plugs, wires).