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Thread: Idle problem need help fast for this weekend

  1. #1

    Unhappy Idle problem need help fast for this weekend

    SmokinStangs - Mustang Forum! The home of the SmokinStangs Laconia - Mustang Rally
    I have a 93 lx with a 5.0 novi 2000 meth inj etc car has been idle for last 3 months at a body shop. We just finished putting interior and ext together then went for a ride drove apprx, 15 miles on sunoco 93 ran the nuts .drove to dover nh car stalled a few times on the way started right back up .went home did an idle relearn drove fine shut car off hard restart then stalling again .i had another iac/bypass valve repeated the whole porocedure runs a little better .still stalls after relearn .????????any suggestions wouild be appreciated thanks hope to be driving it in this weekend just look for a black 93 lx hatch with nh temp plate

  2. #2
    Smokin 75HP - Member nh88lx is a SmokinStanger nh88lx's Avatar
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    If you had the battery unhooked it will take at least a couple hundred miles on an obd1 system to relearn. I would test the tps with a volt meter and see if it shows around .97 volts with the key on not running just to eliminate that. I would also due the basic check for a vacuum leak on the intake. Just a few things I have found over the years.You may have already tried these but I thought I would just throw it out to you

  3. #3
    Quote Originally Posted by nh88lx View Post
    If you had the battery unhooked it will take at least a couple hundred miles on an obd1 system to relearn. I would test the tps with a volt meter and see if it shows around .97 volts with the key on not running just to eliminate that. I would also due the basic check for a vacuum leak on the intake. Just a few things I have found over the years.You may have already tried these but I thought I would just throw it out to you
    Def try the above if you have not. This has happened to me before after a long layup and I turned the idle screw up a tad bit that cleared it up...then you could always reset the TPS again.

    You could also unhook the battery to reset the computer and see if that helps....then just let the relearn process take place and see if that clears it up. I can take a look at it up in Laconia..heading up in a few minutes...Just look for my Black Fox or ask any SmokinStangs Laconia Staff to find only90s.
    Last edited by only90s; 09-09-2011 at 06:03 AM.
    1990 GT- 308, Twisted Wedge, TFS cam, Holley Systemax, V-1 S Trim 12 psi, Power Pipe, Meth Injection, 5 speed, 3.73s

    1984 T Top Coupe-Coyote 5.0 Project Car-"Her 5.0"



    SmokinStangs Laconia Staff

  4. #4
    thanks guys will try

  5. #5
    Smokin 750HP - Member Mustang5L5 is on a Smokin road Mustang5L5's Avatar
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    Click here for the official SmokinStangs Laconia - Mustang Rally website! Not just an event...a destination. Laconia, NH - Sept. 7-9, 2012. Join us for this EPIC Mustang Celebration!
    TPS voltage can be anywhere between 0.5v and 1.1v. You do not need to chase a specific number as the EEC takes a reading on startup and uses that a Vreference. WOT is then triggered at 2.71 volts above that Vref

    Here's a post I made to explain the functions of the tps

    http://www.stangnet.com/mustang-foru...necessary.html

    Run the codes is the easy way. If the tps voltage is outside the 0.5-1.1v range, you will generate a code 23. No code 23, you are fine don't touch the tps. You do not need to set it to .99v

    Run your codes as your symptoms suggest faulty ect and/or tps issues.
    *Michael*

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