Results 1 to 16 of 16

dtc p0174

This is a discussion on dtc p0174 within the General Help forums, part of the LSx Technical Help Section category; My car is running horrible it has no power at all .The car is throwing dtc p0174. Need some imput...

  1. #1
    Member Pete Rock98's Avatar
    Join Date
    Aug 2005
    Location
    Bronx NY
    Age
    47
    Posts
    177

    Black
    1998 z28

    dtc p0174

    My car is running horrible it has no power at all .The car is throwing dtc p0174. Need some imput
    Last edited by Pete Rock98; 10-04-2008 at 02:28 PM.

  2. #2
    Junior Member blatty86's Avatar
    Join Date
    Jun 2007
    Location
    baltimore,md/jville, nc
    Posts
    40

    black
    2000 chevy camaro

    "system to lean right bank" (passenger side) check ur o2 and take a look at your header for any leaks.

  3. #3
    Member Pete Rock98's Avatar
    Join Date
    Aug 2005
    Location
    Bronx NY
    Age
    47
    Posts
    177

    Black
    1998 z28

    ok thanks

  4. #4
    old timer blue02Z's Avatar
    Join Date
    Sep 2005
    Location
    Texas
    Age
    31
    Posts
    3,805

    Navy Blue Metallic
    2002 Z28

    also look for vacuum leaks around your intake manifold.

  5. #5
    old timer blue02Z's Avatar
    Join Date
    Sep 2005
    Location
    Texas
    Age
    31
    Posts
    3,805

    Navy Blue Metallic
    2002 Z28

    btw that is bank 2 which is the passenger side if i am not mistaken

  6. #6
    Member Goldcuffs's Avatar
    Join Date
    Aug 2008
    Location
    Florida
    Posts
    411

    Silver
    2000 Trans Am

    A bad O2 WILL NOT make your car run that bad. I would check for vacuum leaks first.

  7. #7
    Member Pete Rock98's Avatar
    Join Date
    Aug 2005
    Location
    Bronx NY
    Age
    47
    Posts
    177

    Black
    1998 z28

    Quote Originally Posted by blue02Z View Post
    also look for vacuum leaks around your intake manifold.
    I checked the vacume lines they looked good.

  8. #8
    Member Pete Rock98's Avatar
    Join Date
    Aug 2005
    Location
    Bronx NY
    Age
    47
    Posts
    177

    Black
    1998 z28

    Quote Originally Posted by Goldcuffs View Post
    A bad O2 WILL NOT make your car run that bad. I would check for vacuum leaks first.
    The car has a bad hesitation and surge on acceleration

  9. #9
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    Quote Originally Posted by Goldcuffs View Post
    A bad O2 WILL NOT make your car run that bad. I would check for vacuum leaks first.
    I disagree....a bad O2 can make a car run like ass. With that said, I'd look for vacuum leaks first. The hesitation is most likely due to it being so lean. Check the back of your pcv line going into the intake, they like to crack back there although I would think it would lean out both banks. Is the idle funny at all or is it just hesitating?

  10. #10
    Member Pete Rock98's Avatar
    Join Date
    Aug 2005
    Location
    Bronx NY
    Age
    47
    Posts
    177

    Black
    1998 z28

    At idle the car sounds like I have a misfire when I drive the car it's hesitating real bad...
    Orion you mean the line off of the brake booster

  11. #11
    Member Goldcuffs's Avatar
    Join Date
    Aug 2008
    Location
    Florida
    Posts
    411

    Silver
    2000 Trans Am

    Quote Originally Posted by 0rion View Post
    I disagree....a bad O2 can make a car run like ass. With that said, I'd look for vacuum leaks first. The hesitation is most likely due to it being so lean. Check the back of your pcv line going into the intake, they like to crack back there although I would think it would lean out both banks. Is the idle funny at all or is it just hesitating?
    Please explain. I'm always willing to learn something new. I have never seen an 02 cause a severe drivability problem (except on an old Dodge) You could unplug all of you 02's and the car would run just fine. I'm not trying to argue but I would like to hear your input.

  12. #12
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    Quote Originally Posted by Goldcuffs View Post
    Please explain. I'm always willing to learn something new. I have never seen an 02 cause a severe drivability problem (except on an old Dodge) You could unplug all of you 02's and the car would run just fine. I'm not trying to argue but I would like to hear your input.
    there's a difference between an unplugged O2 and a fouled or mis-reporting O2. I've seen O2's responsible for sooting exhaust tips do to incorrect fueling. They can wreak havoc if they're reporting inaccurately. If you unplug them the car just stays in open loop.

  13. #13
    Member Goldcuffs's Avatar
    Join Date
    Aug 2008
    Location
    Florida
    Posts
    411

    Silver
    2000 Trans Am

    Ok, I guess I can't argue with that, but I really don't think an 02 will make his car run as bad as he is saying. But..... just because I have never seen it doesn't mean it can't happen.

    Pete Rock 98- let us know what the problem was when you figure it out.

  14. #14
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    I'm definitely not saying that it's an O2 issue. I would look for a vacuum leak first but the O2's can have a drastic effect on fueling. If it stays on bank 2 I would probably swap the front O2's from side to side and see if the code follows it before replacing an O2. I typically count O2's as a maintenance issue anyhow and replace mine periodically.

  15. #15
    Member Pete Rock98's Avatar
    Join Date
    Aug 2005
    Location
    Bronx NY
    Age
    47
    Posts
    177

    Black
    1998 z28

    Quote Originally Posted by blue02Z View Post
    also look for vacuum leaks around your intake manifold.
    You were on point all of my intake manifold bolts were not tight.I snuged them up and started the car and I could tell right away that misfire was gone.Thanks all

  16. #16
    old timer blue02Z's Avatar
    Join Date
    Sep 2005
    Location
    Texas
    Age
    31
    Posts
    3,805

    Navy Blue Metallic
    2002 Z28


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. P0174 Code, only when hot out......
    By jfl330 in forum General Help
    Replies: 11
    Last Post: 06-17-2013, 04:00 PM
  2. More on the P0174 Code.....
    By jfl330 in forum General Help
    Replies: 3
    Last Post: 06-09-2012, 07:12 AM
  3. Help: P0174 Code (only, no other codes)
    By jfl330 in forum General Help
    Replies: 3
    Last Post: 06-03-2012, 10:23 AM
  4. P0171 and P0174
    By LSCyaL8R in forum General Help
    Replies: 24
    Last Post: 11-10-2010, 06:50 AM
  5. p0171 p0174
    By SandmanWs7 in forum General Help
    Replies: 2
    Last Post: 10-23-2007, 11:56 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •