Unexplainable DeVille Problems

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
Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Unexplainable DeVille Problems in Past Cadillac Vehicle Discussion; Hello Once Again, I had posted earlier about my "93 DeVille and the problem's I've been having, some of you ...
  1. #1
    rbnj is offline Cadillac Owners Member
    Join Date
    Sep 2003

    Unexplainable DeVille Problems

    Hello Once Again, I had posted earlier about my "93 DeVille and the problem's I've been having, some of you have answered and I thank you, but as of today the car has been in the shop for a week this is also the 2nd. mechanic and no one can identify the problem. The problem started with a rough idle anytime I used anything electrical in the car. All major components have been changed, plug's wire's fuel filter , air filter, etc. The computer was changed, this didnt help, all wire's going to the computer have been tested, all ground's have been tested, all good.The car starts up fine but the longer you drive it the engine starts to run rough and miss and backfire. If I turn on the lights it idle's even rougher if you turn the lights off it goes back to a smoother idle but that idle is still rough. Like I said no one can find the problem, my mechanic said he is totally baffled. The onboard computer does not kick out any bad code's at all. The vacum line has been checked, the cap and rotor check out fine, the throttle body is good, the intake manifold gasket has been checked, all check out fine. I purchased this car a year ago with 62,000 miles on it and it has been running great up until 3 weeks ago when all this started to happen it seem's right out of no where. Anyone have any idea's or suggestion's? Thank's Russ

  2. Remove Advertisements

  3. #2
    the Sandman's Avatar
    the Sandman is offline ...Reloaded
    Automobile(s): '05 XLR
    Join Date
    Jan 2003
    Tampa, FL
    Battery, cables, alternator...everything checks out with the charging system?

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.


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.


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