93 fleetwood surges
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 7 of 7
5.0 and 5.7 Discussion, 93 fleetwood surges in Cadillac Engine Technical Discussion; well its got me stumped it surges when im at a redlight or stop like a fuel problem .....have done ...
  1. #1
    bigmikelilmike is offline Cadillac Owners Member
    Automobile(s): 93 fleetwood 76 coup
    Join Date
    Sep 2004
    Posts
    22

    93 fleetwood surges

    well its got me stumped it surges when im at a redlight or stop like a fuel problem .....have done complete tune up and replaced just about every sensor ...new fuel filter .....rebuilt the fuel pressure regulator ....been running 93 gas ......several injector cleaners ....looks like both injectors good both spraying a faned out pattern .....any suggestions guys ...almost 97000 miles thanks

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    N0DIH's Avatar
    N0DIH is offline Cadillac Owners Master
    Automobile(s): 94 Fleetwood Brougham
    Join Date
    Aug 2004
    Location
    Rockford, IL
    Age
    47
    Posts
    7,512

    Re: 93 fleetwood surges

    EGR flow leaking?? That would do it for sure.

    Check that the EGR valve isn't sticking open, or a vacuum hose misrouted to it.

  4. #3
    bigmikelilmike is offline Cadillac Owners Member
    Automobile(s): 93 fleetwood 76 coup
    Join Date
    Sep 2004
    Posts
    22
    Thread Starter

    Re: 93 fleetwood surges

    well egr valve is new ac delco part .........its puzzling me .........sometimes its surges at a light sometimes it misses .......almost every sensor replaced .......no engine light on ......any other ideas guys

  5. #4
    caddydream is offline Cadillac Owners Member
    Join Date
    Jan 2006
    Location
    Syracuse, NY
    Age
    57
    Posts
    88

    Re: 93 fleetwood surges

    Have you replaced the MAP sensor?

  6. #5
    bigmikelilmike is offline Cadillac Owners Member
    Automobile(s): 93 fleetwood 76 coup
    Join Date
    Sep 2004
    Posts
    22
    Thread Starter

    Re: 93 fleetwood surges

    yes i replaced the map sensor,egr valve ,coolant temp sensor, tps sensor, iac , plugs, wires, cap , rotor , fuel filter,pcv,breather filter ....got me stumped

  7. #6
    N0DIH's Avatar
    N0DIH is offline Cadillac Owners Master
    Automobile(s): 94 Fleetwood Brougham
    Join Date
    Aug 2004
    Location
    Rockford, IL
    Age
    47
    Posts
    7,512

    Re: 93 fleetwood surges

    In general I have only seen 2 things be causes for surging. EGR, which really ties into the #1, lean fuel mixture.

    I did get it to surge with DFCO (Deceleration Fuel Cutoff), but that was something else.

    Is TPS set correctly? Is timing set correctly?

    Is the IAC causing it? Watch it when it is surging, is it the CAUSE or just trying to keep up and fix it? Ultimately probably making it worse.

    Check fuel pressure, is filter and pump ok?

  8. #7
    bigmikelilmike is offline Cadillac Owners Member
    Automobile(s): 93 fleetwood 76 coup
    Join Date
    Sep 2004
    Posts
    22
    Thread Starter

    Re: 93 fleetwood surges

    i already checked the timing its good ...iac is new tps is new when i changed the tps i just put it back how it was is there sumthing special i need to do ...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