Sputtering

[kingjesse66]

My truck is sputtering really bad after I start it up when it's already warm. Runs fine if I start it when it's cols and will run fine until I **** it off and start it back up again. I've checked all vacuum lines and my mass airflow sensor is good. It also has new plugs and coil packs. Any help please.

 

[abullfrog78]

Have you done the eather test? If you spray around the engine and it goes to high idle then you know you have a vacuum leak.
If that finds nothing then I would check your TPS. Is there a check engine light coming on?