Runs rough

[Nreed]

I have a little story so the car had crank no start issue so I replaced the icm which made it crank well now it idles ok not good but ok and when I accelerate the rpm’s bouncy and it jerks then when I go to let off gas rpm’s jump to about 7000 then drop all the way back to normal idle any ideas?

 

[95opal]

I have a little story so the car had crank no start issue so I replaced the icm which made it crank well now it idles ok not good but ok and when I accelerate the rpm’s bouncy and it jerks then when I go to let off gas rpm’s jump to about 7000 then drop all the way back to normal idle any ideas?

Sounds like a loose tack signal wire at the coil or in the harness.

 

[Nreed]

Sounds like a loose tack signal wire at the coil or in the harness.

I don’t think it just that cause the car jumps too