p300 and po175&po172 wtf!!!
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds

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
Cadillac STS-V Series Forum Discussion, p300 and po175&po172 wtf!!! in Cadillac V-Series Forums; Car started stumbling and white smoke coming out of exhaust tips and engine bay. Could this be a bad coil ...
  1. #1
    Psycho-albanian is offline Cadillac Owners Fanatic
    Automobile(s): STS_V
    Join Date
    May 2010
    Posts
    277

    p300 and po175&po172 wtf!!!

    Car started stumbling and white smoke coming out of exhaust tips and engine bay. Could this be a bad coil pack? I just replaced the plugs with ngk tr6 and replaced the fuel pressure regulator/fuel filter and now I got a gas smell coming through the cabin and a flashing ses light. Please help.

    ----------

    What coil packs do you guys recommend msd or factory.


  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    PGA2B's Avatar
    PGA2B is offline Cadillac Owners Connoisseur
    Automobile(s): 2013 OBM CTS-V Coupe
    Join Date
    Jun 2009
    Location
    USA
    Posts
    2,663

    Re: p300 and po175&po172 wtf!!!

    Are you loosing any antifreeze?

  4. #3
    1madstsv's Avatar
    1madstsv is offline Cadillac Owners Connoisseur
    Automobile(s): 08 STS-V,10 escalade,80 sedan deville diesel 13 cts vagon
    Join Date
    Aug 2010
    Location
    York pa
    Age
    32
    Posts
    1,605

    Re: p300 and po175&po172 wtf!!!

    You are one of the only ones that seem to be having these issues how many miles are on your car? I think that you more than likely have a wire off. Coils don't very often go bad. Loose plug wire off our not connected right would be my guess. I also don't think the fuel regulator was your problem they normally either work Our they don't to the point the car will not run at all.

    ----------

    Did you ever check your injectors to see if one want bad our is not fully connected.

  5. Remove Advertisements
    Cadillac Forums
    Advertisements
     

  6. #4
    Psycho-albanian is offline Cadillac Owners Fanatic
    Automobile(s): STS_V
    Join Date
    May 2010
    Posts
    277
    Thread Starter

    Re: p300 and po175&po172 wtf!!!

    I have 130, 000 miles on the car and I see no antifreeze leaking on the ground car just started acting up after the fuel filter change. Car is starting to piss me off but with the miles I have on the car things are bound to start breaking/malfunction.

  7. #5
    PGA2B's Avatar
    PGA2B is offline Cadillac Owners Connoisseur
    Automobile(s): 2013 OBM CTS-V Coupe
    Join Date
    Jun 2009
    Location
    USA
    Posts
    2,663

    Re: p300 and po175&po172 wtf!!!

    You need to find out what cylinder is missing or if you have multiple misfires. If you have a single cylinder misfiring then you should swap coils with one you know if not misfiring and see if the misfire follows the coil or stay with the cylinder.

  8. #6
    Psycho-albanian is offline Cadillac Owners Fanatic
    Automobile(s): STS_V
    Join Date
    May 2010
    Posts
    277
    Thread Starter

    Re: p300 and po175&po172 wtf!!!

    I have multiple missfires po305 and po300 came up on the scanner.

  9. #7
    PGA2B's Avatar
    PGA2B is offline Cadillac Owners Connoisseur
    Automobile(s): 2013 OBM CTS-V Coupe
    Join Date
    Jun 2009
    Location
    USA
    Posts
    2,663

    Re: p300 and po175&po172 wtf!!!

    MSD does not have a coil for us unless you figure out something that is interchangeable.

  10. #8
    YoungBlood_STSV is offline Cadillac Owners Fanatic
    Automobile(s): 2006 STS-V
    Join Date
    Sep 2010
    Posts
    277

    Re: p300 and po175&po172 wtf!!!

    Quote Originally Posted by Psycho-albanian View Post
    I have multiple missfires po305 and po300 came up on the scanner.
    Then focus on cylinder #5. I actually had my #5 coil pack go bad. But had none of the other awful sounding symptoms you have. Quick swap of that coil pack and I was on my way with no incidents since.

  11. #9
    Psycho-albanian is offline Cadillac Owners Fanatic
    Automobile(s): STS_V
    Join Date
    May 2010
    Posts
    277
    Thread Starter

    Re: p300 and po175&po172 wtf!!!

    It's crazy the problems im having with this car. Gonna check the coil pack tomorrow and see what's up. I appreciate all your guys help.

  12. #10
    TimmyC is offline Cadillac Owners Connoisseur
    Automobile(s): 2006 STS-V and 2007 STS-V The Murdalac
    Join Date
    Feb 2009
    Location
    1/2 hr S of Grand Rapids, MI
    Age
    37
    Posts
    1,897

    Re: p300 and po175&po172 wtf!!!

    Swap the number 5 coil pack with another one and see if the problem follows it. If it doesn't then I bet the injector is stuck open. Number 5 is the third cylinder back on the passenger side.

  13. #11
    pjeter is offline Cadillac Owners Member
    Join Date
    Mar 2012
    Posts
    51
    Tim it doesnt seem to be the coil. I switch that around and the code doesn't follow... what's the best way to figure out which injector is stuck open?

  14. #12
    TimmyC is offline Cadillac Owners Connoisseur
    Automobile(s): 2006 STS-V and 2007 STS-V The Murdalac
    Join Date
    Feb 2009
    Location
    1/2 hr S of Grand Rapids, MI
    Age
    37
    Posts
    1,897

    Re: p300 and po175&po172 wtf!!!

    Try swapping number 5 injector.

  15. Remove Advertisements
    Cadillac Forums
    Advertisements
     

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

What Cadillac(s) do you own? (Or type NONE)

Please select your insurance company (Optional)

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
  •