1999 Deville wont start after engine swap?
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 12 of 12
Northstar Engines and System Technical Discussion Discussion, 1999 Deville wont start after engine swap? in Cadillac Engine Technical Discussion; Hello, i swapped a blown 1999 engine with a norms 1999 engine, both devilles. got all hooked up and it ...
  1. #1
    aac123 is offline Cadillac Owners Member
    Automobile(s): 2001 Deville DTS
    Join Date
    Oct 2008
    Posts
    99

    1999 Deville wont start after engine swap?

    Hello, i swapped a blown 1999 engine with a norms 1999 engine, both devilles.

    got all hooked up and it cranks all day strong but wont fire up just cranks...

    Things I have checked...

    Fuel pump on and running

    Fuel coming out of service port strong

    relays all electrical

    triple checked all grounds, fuses, relays and all electrical

    wires and plugs triple checked

    2 diff new batterys


    If you got any ideas thanks alot. If I figure it out Ill post back...

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    aac123 is offline Cadillac Owners Member
    Automobile(s): 2001 Deville DTS
    Join Date
    Oct 2008
    Posts
    99

    Re: 1999 Deville wont start after engine swap?

    Could it be a security thing not letting the injectors work???

    I took the donor cars computer under the air box, the brake computer, and the one under glove box.

    Do I need to swap something on the steering wheel or cluster????

    Thanks

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    72,279

    Re: 1999 Deville wont start after engine swap?

    Are you using the donors key?

  5. #4
    aac123 is offline Cadillac Owners Member
    Automobile(s): 2001 Deville DTS
    Join Date
    Oct 2008
    Posts
    99

    Re: 1999 Deville wont start after engine swap?

    no im not, do i need to do one of the following

    A. Switch donor ignition lock

    B. Put original computers back on instead of donors?

  6. #5
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    72,279

    Re: 1999 Deville wont start after engine swap?

    I think so. The security system is reading the wrong key code. Why did you swap PCM's?

    OR I think you can reprogram your key. Might try this first.
    http://www.cadillacforums.com/forums...-pk3-keys.html

  7. #6
    aac123 is offline Cadillac Owners Member
    Automobile(s): 2001 Deville DTS
    Join Date
    Oct 2008
    Posts
    99

    Re: 1999 Deville wont start after engine swap?

    Quote Originally Posted by Ranger View Post
    I think so. The security system is reading the wrong key code. Why did you swap PCM's?

    OR I think you can reprogram your key. Might try this first.
    http://www.cadillacforums.com/forums...-pk3-keys.html
    I just left everything plugged up on the wiring harness, unhooked from under glove box and fuse block then laid pcm on top of engine when i dropped cradle.

    I think i need to put all original computers back in. Ill let you know tomorrow.

    Thanks alot

  8. #7
    tateos's Avatar
    tateos is offline Cadillac Owners Connoisseur
    Automobile(s): 1997 ETC (GAVE TO STEPSON 2011), 2000 DTS (RIP)
    Join Date
    Jul 2007
    Location
    FOUNTAIN HILLS, AZ
    Age
    58
    Posts
    1,713

    Re: 1999 Deville wont start after engine swap?

    Yup - Ranger has you on the right track - the key does match up go with that PCM. For a test, you can try bypassing the VATS system by disconnecting the (yellow?) wire under the steering column.

  9. #8
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    72,279

    Re: 1999 Deville wont start after engine swap?

    Tateos, he has a '99. Does that still have VATS? I thought it may have the newer PASSKEY.

  10. #9
    KHE
    KHE is offline Cadillac Owners Member
    Join Date
    Jun 2004
    Posts
    77

    Re: 1999 Deville wont start after engine swap?

    Keep your car's PCM and you don't need to change the lock cylinder. Make sure all four igintion module plugs are plugged into the ignition control module.

  11. #10
    aac123 is offline Cadillac Owners Member
    Automobile(s): 2001 Deville DTS
    Join Date
    Oct 2008
    Posts
    99

    Re: 1999 Deville wont start after engine swap?

    Thanks alot guys this morning I switched the pcm and the one under the glove box. Boom it started right up. Amazing they program the car to do everything but let the fuel injectors to prevent starting.

    So how would I convert the mileage of donor engine into the blown engine body? Do I need to swap cluster, ignition lock, and all computers?

    This was my original intent, to switch the mileage...

  12. #11
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    72,279

    Re: 1999 Deville wont start after engine swap?

    I forget if the mileage is stored in the PCM or the DIC, but be advised I think that is illegal. I think the mileage is supposed to stay with the car, not the engine.

  13. #12
    tateos's Avatar
    tateos is offline Cadillac Owners Connoisseur
    Automobile(s): 1997 ETC (GAVE TO STEPSON 2011), 2000 DTS (RIP)
    Join Date
    Jul 2007
    Location
    FOUNTAIN HILLS, AZ
    Age
    58
    Posts
    1,713

    Re: 1999 Deville wont start after engine swap?

    Quote Originally Posted by Ranger View Post
    Tateos, he has a '99. Does that still have VATS? I thought it may have the newer PASSKEY.
    Oh - sorry - you're probably right, Ranger

    Richard Moore

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