2000 ls miss.

[tspoon22]

I just changed both valve cover gaskets and removed the little bit of oil that was in the wells.My car still has a miss after the engine is warm.the car is fine until it warms up.There is not a check engine light on.The codes have been checked and there was a miss detected in number 8.The car also runs fine even hot if the cruise control is on.The other problem i see is when the car is in park i can not rev the engine over 3000 rpm.Is there a rev limiter?Can someone please help me with this problem.

 

[Quik LS]

yes - there is a rev limiter in Park or Neutral at 3,000rpm

did you replace the spark plugs and coils?

 

[tspoon22]

I did not change anything.I was told to put dilectric grease on the boots.I will try that saturday.The car runs great untill it gets warm then the miss starts.What should i do next?

 

[Drnaline]

Diagnose which one is the cultrit and have the coil pack replaced.

 

[Quik LS]

if it was me....

swap the plugs and coils.

The miss-fire reading can be misleading and not always report the proper coil - for the price of a set of plugs and coils - swap them and be done with it. Too many times you hear a dealership replacing one coil then three weeks later another, then 4 months later two more.....

The valve cover gaskets where the tough job - the plugs and coils are easy.