Page 3 of 3 FirstFirst 123
Results 21 to 25 of 25

Thread: 3.8 L Cougar idling problem

  1. #21
    Join Date
    Oct 2004
    Location
    Utah.
    Posts
    9,056
    Feedback Score
    2 (100%)

    Default

    Spout connector is a jumper plug near the distributor. It basically turns off certain computer functions and puts the car in limp mode. It is usually near the tfi plug that goes into the bottom of the distributor.

    The tfi mounts to the distributor and the large plug goes in there.

    The iac isn't the problem, forget about that for now.
    Quote Originally Posted by jcassity
    I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
    Hooligans!
    1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
    1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
    1986 cougar.
    lilsammywasapunkrocker@yahoo.com

  2. #22
    Join Date
    Oct 2004
    Location
    East Coast Virginia
    Posts
    10,179
    Feedback Score
    0

    Default

    Quote Originally Posted by Haystack View Post
    Spout connector is a jumper plug near the distributor. It basically turns off certain computer functions and puts the car in limp mode. It is usually near the tfi plug that goes into the bottom of the distributor.

    The tfi mounts to the distributor and the large plug goes in there.

    The iac isn't the problem, forget about that for now.
    No basically it prevents control of timing advance by ECM, AFAIK everything else functions as normal... Definitely does not activate limp mode... Limp mode sets injector pulse at a fixed state, sooo engine is too rich at idle(usually see wisps of black smoke), too lean cruise, performance is in toilet...






    My other rides (that actually do run & drive)

    1969 Fairlane Cobra 428CJ 4-Speed << New 49th Birthday Picture

    1972 Comet GT - 306 C4

  3. #23
    Join Date
    Oct 2004
    Location
    Huntsville, AL
    Posts
    2,053
    Feedback Score
    2 (100%)

    Default

    Quote Originally Posted by Haystack View Post
    My guess is that was a typo for iac, idle air controler.
    I had to look it up myself to make sure I wasn't forgetting things. Getting old!

    ISC = Idle Speed Control. CFI's method to control idle. It physically moves the throttle blade to adjust airflow. IAC sends air through it and bypasses the throttle blades.

    The tps should sit around 1v at idle and reach 3.5v higher then idle voltage to initiate a full sweep. Everytime the computer is powered on, it checks for idle voltage. Anything between about .67-1.19 volts whould be in range, optimally closer to the middle of those numbers. Check for a constant raised signal until it pegs or reaches at least 3.5v higher then idle voltage. Any dead spots or higher then 5v indicates a bad sensor or possible ground wire.
    This...

    You didn't indicate what the actual code that was thrown... Have you verified voltage at idle?


    Although the 3.8 likes to blow head gaskets, the earlier ones aren't nearly as bad as the latter. Mine made it 226k before blowing.

  4. #24
    Join Date
    Oct 2004
    Location
    Utah.
    Posts
    9,056
    Feedback Score
    2 (100%)

    Default

    Quote Originally Posted by TurboCoupe50 View Post
    No basically it prevents control of timing advance by ECM, AFAIK everything else functions as normal... Definitely does not activate limp mode... Limp mode sets injector pulse at a fixed state, sooo engine is too rich at idle(usually see wisps of black smoke), too lean cruise, performance is in toilet...
    Really? Thats interesting, i had problems a few times where the car wouldnt even start but if i pulled the spout it fired right up. I think this was on my 87 tbird with a 302, pulled off the timing chain cover and the timing chain was so loose you could almost touch the chain together inbetween. After i swapped the chain with a cheap double roller that issue went away. That really, really would explain alot.
    Quote Originally Posted by jcassity
    I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
    Hooligans!
    1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
    1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
    1986 cougar.
    lilsammywasapunkrocker@yahoo.com

  5. #25
    Join Date
    Oct 2004
    Location
    Southern Maryland
    Posts
    2,550
    Feedback Score
    0

    Default

    I would do some more trouble shooting before I would replace anymore parts.
    If you are still getting a TPS error code, that needs to be figured out.

    List the KOEO codes you get and define whether they are hard codes or memory codes.

Posting Permissions

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