crankshaft postion sensor
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 13 of 13
Northstar Engines and System Technical Discussion Discussion, crankshaft postion sensor in Cadillac Engine Technical Discussion; Hello i own 1997 deville i have a p0300 code i put on scanner 1.3.5.7 cylinders misfiring put spark tester ...
  1. #1
    mikeylok13 is offline Cadillac Owners Member
    Join Date
    Jun 2006
    Posts
    10

    crankshaft postion sensor

    Hello i own 1997 deville
    i have a p0300 code i put on scanner 1.3.5.7 cylinders misfiring put spark tester in between coil and wires very erratic spark 1,3,5,7 can crankshaft postion sensor be the cause of misfire?

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    41,617

    Re: crankshaft postion sensor

    I believe your vehicle has the earlier 4-coil waste spark ignition system. Basically, the system fires TWO spark plugs at the same time: the "Power" spark, at near TDC of the compression cylinder, and, simultaneously, the "Waste" cylinder which is at (near) the top of the exhaust stroke. If you have weak spark on 1,3,5,7, then something is wrong with the 4 cylinder(s) spark on the ("front??") of the engine, but it isn't related to ignition timing, because those cylinders don't fire in that order. You need a pre-'98 technician. Someone versed in waste spark systems should be able to diagnose your problem quickly. It's probably a simple repair. Good luck! You may need something as simple as new spark plug wires........or, if the coils prove weak, a new coil pack.

  4. #3
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    70,478

    Re: crankshaft postion sensor

    I would venture a guess that the common denominator is the ICM. Make sure all 4 connectors are clean & tight.

  5. #4
    mikeylok13 is offline Cadillac Owners Member
    Join Date
    Jun 2006
    Posts
    10

    Re: crankshaft postion sensor

    thank you for your info icm is what the service manual says i got a icm coil pack from junk yard didnt help ran the same i will look into waste spark system

  6. #5
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    70,478

    Re: crankshaft postion sensor

    Waste spark is not a system. It is just the way the ignition system operates.

  7. #6
    mikeylok13 is offline Cadillac Owners Member
    Join Date
    Jun 2006
    Posts
    10

    Re: crankshaft postion sensor

    changed the icm runs better but still has a miss i noticed if i turn on a/c the car idles fine but in park has misfire

  8. #7
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    70,478

    Re: crankshaft postion sensor

    Sounds a lot like my '97 Deville right after the fuel rail recall. Ended up being the wires. Do a search for "Stutter, Engine or Trans?"

  9. #8
    mikeylok13 is offline Cadillac Owners Member
    Join Date
    Jun 2006
    Posts
    10

    Re: crankshaft postion sensor

    well today i got my wires from rockauto but it did not help the miss

  10. #9
    cadillac8686's Avatar
    cadillac8686 is offline Cadillac Owners Member
    Automobile(s): Pearl White 2002 Cadillac STS
    Join Date
    Oct 2007
    Location
    Ohio
    Age
    30
    Posts
    54

    Re: crankshaft postion sensor

    What can a bad crank sensor do? Does it rob from performance, drivability? I know mine is bad because I had my brother put the car on the computer and I have some codes which one of them he said was the crank sensor! how much is a thing like this and what does it take to get it fixed? Any help would be great I just want no problems with my 02 STS

  11. #10
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    70,478

    Re: crankshaft postion sensor

    It will cause intermittent stalls. I think they are about $50 each or so from http://www.rockauto.com. They are above the oil filter adapter, which must be removed to access them (it's still a tight fit). Dealer will charge $400 - $500 for the job.

    No need to put the car on a computer to retrieve the DTC's. Your car is self diagnostic. See the as "sticky" in the Tech Tips section.

  12. #11
    cadillac8686's Avatar
    cadillac8686 is offline Cadillac Owners Member
    Automobile(s): Pearl White 2002 Cadillac STS
    Join Date
    Oct 2007
    Location
    Ohio
    Age
    30
    Posts
    54

    Re: crankshaft postion sensor

    I know, my car stalls a bit all the time. Now I know why........ I know how to get to the codes. I clear them alot.

  13. #12
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    41,617

    Re: crankshaft postion sensor

    If you live in an emissions testing state or county, don't clear codes for a couple of weeks before you go for the OBD II plug-in test. An inadequate number of completed driving cycles will show up as a "System not ready" test code and the car will fail.

  14. #13
    cadillac8686's Avatar
    cadillac8686 is offline Cadillac Owners Member
    Automobile(s): Pearl White 2002 Cadillac STS
    Join Date
    Oct 2007
    Location
    Ohio
    Age
    30
    Posts
    54

    Re: crankshaft postion sensor

    Thanks.

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