Missing on the top side.

[Bama87GN]

My car has a miss on the in overdrive when it is under no strain. I have replaced the plugs(Napa Race Plugs), coilpack, module, maf sensor, fuel pump, fuel filter, and tps. I also noticed today some water missing out of my overfill tank. It usually has plenty. Also when I am "getting on it", the car feels strong then quits pulling in each gear. The tach is usually around 4000rpm. The car runs great other than this. Could all these problems be a blown head gasket? What else could it be if not?

Thanks
Bass

 

[Bama87GN]

Anyone?

 

[sweetgn]

Did you figure it out yet???

I have had the exact same problem for a while now. I have replaced the coil pack, ignition module, wires, etc.. When I changed all three of these at the same time, it was great for about a day. Then the next day it was back again. Uhhh!!
The car runs great other than the low strain, coasting basically in overdrive miss. I have to wonder though, since i am not using the metal spark plug boots from the factory could this be causing very premature wear of the plug wire at the boot?
I was wondering if you are still using your metal boots on the wires? Thanks