Engine Misfire question

[redat9]

So I had this problem with my car that when the car warms up, when the rpm drops below 3000 rpm, the car feels like its misfiring. I took the car to autowave for service to get it checked out, and just got it back, but the problem is still there.

Autowave changed
- Fuel Filter
- 3 Coil packs
-Sent the injectors out for cleaning.

They said they tested it on the dyno and they could not recreate the problem. Eventually they ran into the issue saying it feels like the power is shutting off, which didnt make sense to me as the car keeps running it just runs super rough. So I thought I would reach out to the community to see if anyone could give me any feedback as to what it might be.

 

[EIFFEL]

Have you check the fuel pressure to make sure fuel pump is working as designed?

 

[shern]

Had similar issues. Ended up being plugs. Replaced with OEM spec'd plugs and fixed the issue.

 

[A.S. Motorsport]

Check the ICM module on the throttle body a common fault.
Although the symptoms sound like fuel or air related (FPR perhaps?).

EDIT,
Odd I assumed automatically they'd changed plugs before replacing coils as that's very obvious issue

 

[redat9]

thanks for all the replies, I will work on it this week and keep you guys posted

 

[Kouki Monster]

Really odd they would have not looked at the plugs...maybe they did?

 

[A.S. Motorsport]

Really odd they would have not looked at the plugs...maybe they did?

+1 that's literally car tech 101

 

[angus]

Igniter, coil, plugs, it fixes this problem.

Now the problem of the "mystery misfire" code? now that is a case to work on...