I have a 2004 MC-SS, for a while now the RPM continuously dips and the car shuts down. Most times when I crank it back up it immediately shuts down again. I have to keep my foot on the gas to drive, and even then it stutters. I’ve seen multiple mechanics and the problem still exist. It doesn’t have a vacuum issue, any air or air sensor issues, no dirty or bad intake, no spark plug or coil issues. I’m thinking about taking it to the chevy dealer but I know they are going to charge a arm and a leg, and my first born child. Please help if you can.

 

You say no air sensor issue, are you talking specifically about the MAF? If so, check your IAC. Sounds like that.

 

Nope not that either….all of that has been replaced. Did a major tune up….it runs like a dream !! Just that one problem.

 

If you didn't use an OEM MAF sensor, that could still be the problem.

 

Pull the vacuum line from the fuel pressure regulator and see if it is wet or smells like fuel. It sounds like a fueling issue to me.

 

Do you have any kind of scan tool? It would be helpful to log the data from the main sensors when this happens as it might give some clues.

Without seeing the car in person or having any data to look at, we'll also just be shooting in the dark.