Ecartman84

Hi Everyone

I am currently having an issue with my LT1 95 corvette where it seems to stumble while it is idling. I have taken a short datamaster logging with it sitting in the driveway while the problem was happening. Could any of you with more experience with datamaster and fuel injection take a look at this and let me know what you think? I have noticed two things... The IAC is sitting at zero while it idles toward the end and also the lines on the graph are a bit bumpy looking but maybe that is the stumble?

Thanks!
Ron

THE 383 admiral

I will check my settings at home.
But you need to turn OFF dash refresh within DM
Default is on. And gives you intermittent log.

Ecartman84

Yea, it took some time but I did figure out I had to turn that off. I am able to log just fine now and I had attached the log to the first post. I mostly just need help figuring out what is wrong with the car that is causing it to stumble while idling. For most part the only thing I see wrong is the fact that the IAC is at zero while idling toward the end.

Thanks!
Ron

JackDidley

IAC at 0 points to a vacuum leak. Its closing to compensate.