Mar 18th, 00, 05:26 AM
I have a '96 Z28 with an LT1. Lately the car has been running rough and has sent a misfire code to the computer numerous times. The last code I got was P0300 Random/Multiple Misfire. The car stumbles and hesitates when in the 1500 to 2000 RPM range. After 2000 it seems fine. I've tried many remedies such as: new plugs and plug wires, injector cleaner, new cap and rotor, new coil wire. I've checked for vacuum leaks and everything seems fine there. I'm at a loss as to what could be causing this. Any help is greatly appreciated.
1st & 2nd GENGuy
Mar 18th, 00, 06:19 AM
Double check the plug wires to make sure they are in the correct firing order.
68SS ZZ4, 4sp T-10, 12 bolt, getting painted
78Z28, 330hp vortec, TH350, 10 bolt (just finished)
Mar 18th, 00, 04:17 PM
New Cap and New Rotor in a '96 Z?!?!?!
Do you mean you replaced the Optispark?
Steve McCorry - Central Ohio Camaro Club
'69 Camaro RS/SS-350 - Daytona Yellow
'95 Camaro Z-28 - Sebring Silver
click here to see my car ---> www.mindspring.com/~mccorry (http://www.mindspring.com/~mccorry)
Mar 18th, 00, 07:22 PM
I didn't replace the entire optispark setup. I replaced the outer cap, the rotor and the plastic cover. I still have the original photo emitter/receptor and metal discs.
Mar 18th, 00, 07:23 PM
All the plug wires check out in the correct firing order.