93 LT1 ruffness at 1000 rpms

[K1WY]

Any ideas on a ruffness at 1000 rpms. New plug wires and coil wire. Run strong above 1000. Idle is good.

 

[Ethan]

93 Vette ruffness

How many miles on your Vette possibly the opti(crap) spark.

 

[K1WY]

30,000 miles on the car. I have a new optispark unit, really don't want to change it if at all possible !

No error codes show up using Ez-Link scanner.

 

[Vettelt193]

Check your plug wires first... one may be loose...