Any Tips on Tune Up?

[finalfighter]

check your ecm before doing anything else! what your are describing sounds like blown caps.

[Can1991Ram]

check your ecm before doing anything else! what your are describing sounds like blown caps.

Mine did exactly that with blown caps.

It is AWFUL to pull the ECU but take you time and it will come out.

Open the ECU and look for cap that are bulged up or leaking. They can leak from the top OR bottom and wipe out the traces on the PCM.
If it have done they you can either have it repaired or you will need to replace it.

My truck has had AT LEAST 3 ECU failures due to caps. I installed the third ECU that was a repaired ECU and now it runs VERY well.

The caps will have an X on the top. look for those to open up (venting) or bulging.

My coil also failed. I replaced it.

I pulled the EGR and soaked it in carb cleaner. BIG difference.

I pulled seafoam into the engine through the vacuum hose on the back of the intake... it helped.