Re: Running rough
Do you have a service manual?
Did you get a SES light on the display?
Start by pulling stored codes. Write them down, if any.
If no codes, while running, remove plug wire, one at a time. Note which cylinder does NOT cause a change in idle speed/roughness.
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Jerry Downey
JERRYS LT5 GASKETS & PARTS
http://www.jerrysgaskets.com
1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc.
2016 Black-Red, 3LT-Z51 Auto 8-speed.
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