Starting running issues

[rayray61]

So I have an 04 lesabre. Replaced coil packs wires and icm. It starts but it's rough and does not stay running. Throws 0300 code any ideas

 

[02LTD2.0]

Check your spark plug order. Very easy to mix them up.

 

[rayray61]

New plugs new ignition module new wires code p0300 but it seems like it's gets worse when you accelerate but when your at a certain consistent speed it's ok

 

[RD_Atlanta]

Please provide us with a history, was the car running well, then suddenly this issue started? Or did it start happening after repair work was done?

 

[02LTD2.0]

Here's a better video:

 

[02LTD2.0]

If your plug wires are original they will be numbered. If not then I would suggest numbering them with a little piece of masking tape. Front bank is 1-3-5 and rear bank is 2-4-6.

Skip the dielectric grease on the coils. If and when you change spark plugs you should put the dielectric on the inside of the spark plug boots but not on the terminal itself.

 

[02LTD2.0]

 

[02LTD2.0]

So I have an 04 lesabre. Replaced coil packs wires and icm. It starts but it's rough and does not stay running. Throws 0300 code any ideas

Please name the brands that you used for ICM , coils and wires.

 

[02LTD2.0]

So I have an 04 lesabre. Replaced coil packs wires and icm. It starts but it's rough and does not stay running. Throws 0300 code any ideas

If you used quality parts then another culprit could be cracked porcelain on one or more of the spark plugs.