truck has 225,000 miles and started skipping at part throttle. No SES light but it is definitely annoying.

the engine is a 6.0 with 40,000 miles and this has happened before when it is hot ( NW Fl ) I’m thinking coils or old wires.

I ordered the Denso “performance coils” from Rock Auto. Has anyone run these before?

 

Do you have a scanner? You can log misfires to see if it is isolated to a cylinder or bank before it throws a code. That will help narrow down the culprit. I doubt it is a coil though. Have you gotten gas from one of the hundreds of new gas stations going up in the area? Does it only skip at lower fuel levels?

Being a 2008 with a 6.0L swap, still running a 4L60? Could be transmission related too.

 

don’t mention transmission. ssshhhhhhhh

it does it in 2,3 and 4th

 

I bought the Denso” performance” coils from rock auto. and new 90mm throttle body

do the gas peddles for the dbw ever mess up?

 

Usually if something electronic is out of parameters enough to cause issue, it will pop a code. If it is intermittent or short enough duration, it may only show as a pending code which does not set the light. You can still see the pending code with a scanner though.

 

found a spark plug wire that the metal clip over the spark plug was broken, it felt funny when I put plugs in, and part of the ignition coil harness pinched. probably from when I put the BTR valve covers on

 

Sometimes it's that simple. Got to love an easy fix.

 

the gold 90mm throttle body is fun!!!