Northstar Intermittent misfire-Pulling hair out!!
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 2 of 2
Northstar Engines and System Technical Discussion Discussion, Northstar Intermittent misfire-Pulling hair out!! in Cadillac Engine Technical Discussion; Northstar Intermittent misfire-Pulling hair out!! Now what? My 96 Eldorado (60,000 miles) still has an intermittent misfire on #1 cylinder. ...
  1. #1
    KrazyK55's Avatar
    KrazyK55 is offline Cadillac Owners Member
    Automobile(s): 1996 Eldorado
    Join Date
    Jun 2003
    Location
    Illinois (Metro St. Louis MO A
    Age
    66
    Posts
    30

    Northstar Intermittent misfire-Pulling hair out!!



    Northstar Intermittent misfire-Pulling hair out!!

    Now what? My 96 Eldorado (60,000 miles) still has an intermittent misfire on #1 cylinder. The darn thing might run fine for weeks at a time and never miss a lick then when you least expect it, it starts missing again. When it sets a code it is always #1 cylinder misfire.
    One thing you can bet on, it darn sure will not misfire when you take it to a tech to be checked out! 3 trips to the shop, ran great all 3 times.

    So far I have installed New AC plugs properly gaped and installed, New Factory plug wires, replaced the coil pack with factory A/C Delco replacement. Engine idles fine but misses sometimes on acceleration or when pulling a slight grade. The misfire usually occurs below 3000 RPM. There have been a couple of times that the engine sounded like it backfired just as the misfire started. (Fuel injector maybe?) I have preformed all of the different suggested test that I have seen on the forum with no negative results and have now resorted to parts changing as a last ditch effort. Next comes the 16 lb sledge or maybe a trip to the crusher. LOL

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    haymaker is offline Cadillac Owners Fanatic
    Join Date
    Sep 2004
    Posts
    266

    Re: Northstar Intermittent misfire-Pulling hair out!!

    Try swapping the #1 injector with #3 injector to see if the miss follows that injector.

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