My 94 Z is having a problem it wont idle or run right it has a rough idle or it spudders and dies. i have replaced the ICM, coil, coil wire, cleaned the Mass air, new intake elbow (old one was cracked). i dont know where to look now do the Lt1 motors ever get vapor lock cuz it starts to have problems when it warms up for the most part. some feedback would be great on this. thanks

 

You posted in the parts for sale section...

But to answer your question, if you can get your car scanned to see what codes are stored or what your fueling is doing, that would be a good start. Other than the obvious stuff that you can easily diagnose like intake/exhaust leaks and broken wires, you need to see what the computer gives up - lots of clues in there.

Now the 94s had a distributor that could be problematic, especially if it got wet, and cause all sorts of ignition problems, so you might want to research that, too. It's been covered a trillion times on here, so do some reading.