#> In article , #> Firebird wrote: #> #I got the light on the dashboard while waiting in line to exit a large #> #parking lot. THe engine had been idling for about 5-7 minutes. Code #> P0301 #> #is a miss in cylinder 1, however I never felt anything and the engine #> runs #> #ok to me. #> #The light has been on the dashboard for about 3 weeks now. #> #How should I proceed. I thought it resets itself after 40 starts. #>
#> The code will reset after 40 starts with no problems. The light #> resets sooner than that. If you light is still on, it's time to #> check your plug and anything attached to it... #>
#> What engine do you have? #>
#> /herb
#I have the 6 cylinder. I think its a 4.0 ...it runs fine. It does not feel #like its missing.
It is possible you don't feel anything because it is a in-line 6. A missing spark would probably go unnoticed, at least for a little while until you get problems from fuel in the exhaust. Before I had my YJ's original 4.2 I6 replaced, I pretty much had ziltch compression on my number 6 cylinder and I hardly noticed it unless doing 70+ on a steep (for a freeway) incline--then it felt like I was driving my mom's '81 Honda-civic-putt-putt.
On the 4.0, the sparkplugs fire twice per cycle as 3 ignition coils are shared by the 6 cylinders so you may want to also look at the other sparkplug that's tied to the number 1 cylinder's sparkplug.
If you ever look at the engines that are used to demo the snake-oil additives on late night infomercials with sand and other crud dumped on top of the heads, it's always a I6.
You should still check your plug and anything attached to it.
/herb