Hesitant on acceleration and nothing when you mash the throttle

[Vette73]

Originally Posted by DRM500RUBYZR-1

Absolutely!
You need to confirm adequate pressure.
It sure sounds like no fuel upon secondary demand.
Tape the gauge to the windshield and see what is going on.

Also, with recent cold snap any water in fuel tank, lines or filter becomes more of a problem.

The cold also lengthens the time until operating temperature is reached. While your secondarys are mechanically full time, if your ECM sees temp below operating temp I wonder what it has been told to do if re-tuned, or is it running original tune. Normally, it would not want to pulse those secondary injectors.
Does the problem occur below and above 180 degrees?

Marty

Hey Marty its John....I was by your dealership a few weeks ago....It does it below and above 180 degrees.....I doubt its gas line water, all though its been extremely cold..

Yes car has been retuned by Dempsey when I got the work done ....Storm is expected to hit tonight so not sure when I can bring it somewhere to check fuel pressure....Maybe my mechanic friend of mine has one that I can use...

I'm in on that 04...Let me know what's up...