Northstar Coil Bank
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 5 of 5
Northstar Engines and System Technical Discussion Discussion, Northstar Coil Bank in Cadillac Engine Technical Discussion; Is there a way to test, with a basic VO meter the coil bank on a Northstar engine. I have ...
  1. #1
    ajshovlowsky is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Sep 2007
    Posts
    5

    Northstar Coil Bank

    Is there a way to test, with a basic VO meter the coil bank on a Northstar engine. I have a 2002 Deville with 160,000 miles and it started to skip badly. I replaced the spark plugs, for the first time, and stll have the problem. the fault code is: PCM P0300. Some of the new plugs show carbon and there are "cracks" around the ends of the coil probes. Any help would be appreciated. thanks

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    44,593

    Re: Northstar Coil Bank

    Your coils are potted in the cassettes. When you had the cassettes off, that yellowish compound in the 4 recesses is the epoxy compound. No way to get to the individual coils unless you again remove the cassettes and pull the ICM out of each one and try some pin resistance checks.

    In a lot of these responses, I recommend checking and or just replacing the coil boots. Cheap insurance. Make sure the cassette ground spring is doing its job.

    Other causes of a P0300 (stall detected) are vacuum leaks and intake manifold connector plenum cracks and impending CKP (CranKshaft Position sensor) failures.....but those will usually also set P0171, P0174, P0335/6, and P0385/6 codes.

    (EDIT.........If, as you posted down in another thread, you suspect the coil cassette(s), take a look at your car parts, ignition, in www.rockauto.com. They still have a few of the OEM DELPHI cassettes with ICM for under $200 apiece.)

    For someone with a late FWD Northstar engine without plug wires, here's what we're talking about:

  4. #3
    skippydts's Avatar
    skippydts is offline Cadillac Owners Fanatic
    Automobile(s): 2008 STS AWD - Black inside and out
    Join Date
    Apr 2008
    Age
    50
    Posts
    273

    Re: Northstar Coil Bank

    My wifes Dodge Stratus has those also, they are a dream to replace

  5. #4
    noozall is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Jun 2007
    Posts
    4

    Re: Northstar Coil Bank

    Quote Originally Posted by ajshovlowsky View Post
    Is there a way to test, with a basic VO meter the coil bank on a Northstar engine. I have a 2002 Deville with 160,000 miles and it started to skip badly. I replaced the spark plugs, for the first time, and stll have the problem. the fault code is: PCM P0300. Some of the new plugs show carbon and there are "cracks" around the ends of the coil probes. Any help would be appreciated. thanks
    Take the cover off the top of the engine. Start it and let it idle. Pull the plugs off the coil packs one at a time The that doesn't make a difference in idle quality is the bad one. The one that kills the engine is the good one. At that milage I would replace both. Mine went bad at 120,000 and 124,000. Rock auto has the best price I've found. Don't make the mistake I made and just buy the module. Buy the whole assembly and you will be good for another 100k plus.

    I don't know of any specs to probe the connector pins, but what if you did and found one or two bad coils? You can't do anything about it anyway. You are going to have to spend around $350 and then you will have a dependable car again. They are VERY easy to change.

    Incidently, too wide spark plug gaps will blow the coils. They build voltage until the plug fires, and if it has to build too much it zaps the module.

  6. #5
    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    44,593

    Re: Northstar Coil Bank

    This thread has been dead for 4.4 years.

    If you pull the plug on an ICM on a Northstar with individual 4-coil cassettes (the OP's engine, 8 coils and no plug wires) then all 4 cylinders on that bank die.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting