Starts fine when cold, hesitates when warm...
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, Starts fine when cold, hesitates when warm... in Cadillac Engine Technical Discussion; In the morning my 97 Deville cranks up fine. It just hit 90k miles the other day. When it hesitates, ...
  1. #1
    Wicho is offline Cadillac Owners Fanatic
    Join Date
    Jan 2004
    Location
    Miami, Florida
    Posts
    134

    Starts fine when cold, hesitates when warm...

    In the morning my 97 Deville cranks up fine. It just hit 90k miles the other day. When it hesitates, after I smell a slight sent of gas but leaves after about 15 seconds. I took it to a small auto shop and they couldn't find anything. I would also like to know how to erase all the code on the computer so I can see what going on now. A friend of mine said that the Cadillacs store all the codes since the day they are manufactored. Is this true and if so how do I erase the codes ? Thanks

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    elwesso's Avatar
    elwesso is offline Cadillac Owners Master
    Automobile(s): 2005 CTS-V, 1994 Infiniti Q45
    Join Date
    Jan 2003
    Location
    Indiana
    Posts
    7,668

    Re: Starts fine when cold, hesitates when warm...


  4. #3
    BeelzeBob's Avatar
    BeelzeBob is offline I'm a Cadillac Fanatic!
    Join Date
    Dec 2002
    Location
    Fort Lauderdale, Florida
    Age
    49
    Posts
    9,577

    Re: Starts fine when cold, hesitates when warm...

    Codes are NOT stored since the day the car was built....LOL...if a code sets it will turn on the SES light as long as it is current..i.e..the onboard diagnostics system is detecting a failure currrently. If the code is not longer being detected the code reverts to a "history" code that is stored for 50 ignition cycles and then it erases if it isn't showing up or being detected any more.

  5. #4
    Wicho is offline Cadillac Owners Fanatic
    Join Date
    Jan 2004
    Location
    Miami, Florida
    Posts
    134

    Re: Starts fine when cold, hesitates when warm...

    Wow... thank link helped very much, thank you ! Bob, thanks for setting the story straight. I was thinking the same thing you said but he kept on insisting so I just gave in and belived it

  6. #5
    BeelzeBob's Avatar
    BeelzeBob is offline I'm a Cadillac Fanatic!
    Join Date
    Dec 2002
    Location
    Fort Lauderdale, Florida
    Age
    49
    Posts
    9,577

    Re: Starts fine when cold, hesitates when warm...

    Check the fuel pressure regulator and/or replace it. Most likely cause of the complaint you have. Lots in the archives...search using "fuel pressure regulator" or "FPR"....

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