I have misfires on all but cylinder #1, I have new plugs, I swapped out the coils, had the injectors checked and now I'm lost. Also the fuel pressure stays steady at 44psi off and while on and pressing the gas it goes up a few then comes back down. Someone I know with a snap on scanner tester showed no other codes but he tested it for misfires and we saw 2 through 6 all intermittently misfiring...What could it be? Is the battery a possibility? It's also running lean p0171

Thanks

 

Maybe an ignition module issue, or perhaps the infamous MAF sensor failing.

 

Did you change the plug wires as well?

 

I plan on trying it tomorrow.the wires aren't but 1.5 years but my car overheated because the infamous plastic coolant elbows so maybe it depreciated the life of the wires. I will update

 

I noticed this double click sound as the car warms up. It's CLICK CLICK it happens twice and no more what is this?

 

I am not sure of the double click. Try looking at the motor in the dark to see if you have any wires arching.