im having a flurry of mis fires when car warms up. then it will wait a while and do it again. off an on it does it. no check engine lights are blinking. i jumped the wires to check code and the check engine light comes on and stays lit. no blinking at all. does this mean the acual ecm is bad or any other ideas?? thanks

 

Please put your location in your User CP area like mine..

I'm moving this to the correct forum for you..The One It's Now IN

WheelBrokerAng

 

When was the last time the vehicle's plugs/wires/distributor/rotor were replaced?

Also plugs were cleaned?

I've found that those tend to create the most problems, especially in older vehicles if they haven't been replaced. Power leaks in the wires can cause HP drains and misfires, etc.

GL!

 

When you jumper the SCS connector to read codes, a solid-ON CEL means there's no stored error codes.

Back in those days, a bad ECU was indicated by the CEL being ON while driving yet it wouldn't flash any codes when you jumper the SCS connector.