ok have had this check engine light now for 3 months and i have done everything i can think of to get rid of it but it still stays on!its says miss fire on cyl. 4. i have put new plugs in and moved them and and moved coil packs. i installed a new vf34,pinks,upipe,and fuel pump. and the check engine lights flashs kinda rare but does flash. what does that flashing light mean? but other than that it drives great. i dont feel anything wrong its wierd. Any ideas?

 

Utec - flashing CEL means detonation! and timming is being pulled.

 

ya it means its knockin and it pulls timin might need to turn the boost down since the colder weather is here

 

i have AP does it still mean the same?

 

it could be the up pipe........or did you try re-setting the ecu by unplugging the battery for a 1/2 hour.

 

1/2 hour? All you have to do is take off the negetive, tap your brakes a few times and put it back on.

 

1/2 is an oversight just to make sure the ecu resets........but thanks

 

all you need to do is pull the no.5 engine fuse.

no battery stuff. no loss of presets.

one 30A fuse in & out and it's cleared.

IMO, get the code read first; it is important to diagnose further..... (could be a def. one?)

ese

ps- i didnt think one could swapout the packs?