just bought a 95 z cheeeap, had my tech look at it and it fired up like a champ the moment i got 2 blocks from work it dies and wont start/ pulled it back put it in a garage......the next day it fires up w/o a prob, drove it home and let it sit.....next day it wouldnt start so i had it towed.....the moment it gets dropped off at the mechanics it fires right up.... its been diagnosed 2X since...everytime its around a mechanic it acts fine so the diagnosis always comes out as the car is fine.......it makes the cranking noise all day just no spark to kick it over...sometimes it turns on just fine im just worried it will leave me starnded at any time ..........i have been told a varity of things ranging from the key to the msd....i can only hope its just the coil.....please help my car has been baking in 115 degree heat just waiting to be driven......i havent added this car to my sig sorry

 

IT don't like you..

Replace the ignition switch and check all the grounds and conections in the IGN circuit by unplugging them and re plugging them.

 

Check the fuel pressure, my car just did this and it was the fuel pump. Not getting enough fuel pressure, new fuel pump car runs fine. I changes the igintion module and coil pack, and that didn't help fuel pump, when in doubt check the fuel pump.

 

I had the same problem on my 94.
1) Check the fuel pump pressure with a guage on the test port

2) Check or change the ignition switch. This is quite involved and will require you to pull the steering column out of the car. It still did not help my problem.

3) Change the OPTI.....I did and it cured the problem.

Mine would run fine for about 10 or 15 minutes driving and then stop DEAD. I tried all the easy items, coil, igniter, fuel, etc. and then I did the OPTI. Plenty of good troubleshooting on this site.