User Tag List

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 4 of 4

Thread: Open/closed loop question?

  1. #1
    Regular Member
    Join Date
    Sep 2011
    Location
    Caerphilly
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : saab 93 tid(150)

    Trim : sport

    Engine : 1.9 z19dth

    Year : 2005

    Mileage : 63000

    Default Open/closed loop question?

    (z19dth). I know on first start up the engine runs in open loop but Does anyone know at what temperature the ecu is suppose to go into closed loop operation? Cheers

  2. #2
    Regular Member rich r's Avatar
    Join Date
    Feb 2011
    Location
    Selby
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Not sure it's entirely based on coolant temperature alone. I think there's also a fixed time delay (although only a couple of seconds), and probably the lambda sensor voltages (ie indicating that they have heated up to their working temperature) are used.

    But I'll plug my EOBD reader in this weekend and watch the coolant temperature and report back if you like- though I have a petrol Z18XE so it won't necessarily be the same as yours.

  3. #3
    Regular Member
    Join Date
    Sep 2011
    Location
    Caerphilly
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : saab 93 tid(150)

    Trim : sport

    Engine : 1.9 z19dth

    Year : 2005

    Mileage : 63000

    Default

    Quote Originally Posted by rich r View Post
    Not sure it's entirely based on coolant temperature alone. I think there's also a fixed time delay (although only a couple of seconds), and probably the lambda sensor voltages (ie indicating that they have heated up to their working temperature) are used.

    But I'll plug my EOBD reader in this weekend and watch the coolant temperature and report back if you like- though I have a petrol Z18XE so it won't necessarily be the same as yours.
    Cheers fella, but how do you tell on your code reader when it switches to closed loop? ( out of curiosity)

  4. #4
    Regular Member rich r's Avatar
    Join Date
    Feb 2011
    Location
    Selby
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    I can do real time monitoring of various parameters, rpm, temperatures, O2, trims, ignition advance etc.

    It's just a £10 USB ODB2/EOBD job off ebay with some free Scantool software.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. driver,s door closed but dash light says door is open
    By wulza in forum Electrical & ICE (including SatNav)
    Replies: 8
    Last Post: 21st March 2012, 01:47
  2. As the MOD closed that last thread i will open this
    By RMDveccy in forum The 'Off Topic' room
    Replies: 43
    Last Post: 7th June 2009, 15:55
  3. In the Loop
    By Stevel in forum The 'Off Topic' room
    Replies: 0
    Last Post: 24th April 2009, 22:57
  4. A Attack Helicopter doing a loop to loop
    By chrisgettings in forum The 'Off Topic' room
    Replies: 18
    Last Post: 5th October 2008, 21:01

Visitors found this page by searching for:

vectra c not in closed loop

vectra c open loop

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
  •