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  1. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    It's a BWD IAB, ACT, and ECT. The new O2s are bosch units. The ones I pulled were Ford. That is an interesting idea, I know the IAB is working, as it is really what is causing the suge.
  2. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    S&P have been cleaned. No signs of any corrosion in them either when I cleaned all the pins and sockets.
  3. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    The computer has never thrown a code for the MAP/BARO sensor, I was just wondering about it. I swapped it with one off of a 1990 Mustang, and it made absolutely no difference, so I assumed that mine is ok. The detailed info: Simple things like resetting the computer, setting base time, base...
  4. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    About time to re-title this thread. Update with new info tomorrow. Wiring test for the O2s; good. New O2s, check. Removed upper intake to check all vacuum lines, check. I'm stumped. @LaserSVT , brand new ACT, ECT, IAB, O2s... Edit: Mis-fire at cruise, and original problem still, it has...
  5. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    Perhaps I should call Bill @LaserSVT into this, if willing...:scratch:
  6. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    Just checked, orange coming out of the FI harness is grounded at the bellhousing, on the upper right bolt. Too cold, and too wintry mix to do further testing at this time...
  7. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    Correct me if I'm wrong, but the ground for the sensors themselves gets continuity through the piping, right? I did test resistance between the computer ground and the passenger pipe, I know it wasn't the best connection, but I did scratch the pipe with my meeter lead, and was getting...
  8. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    ...and some more info, at the pins I was able to get a reading of over .1volt, but only during decel after revving the engine. It smoothed out like she does occasionally while I was taking readings on pin 29, and was holding about .09v while acting properly, then dropped with the rough/low idle...
  9. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    Ok, @jrichker , is the wiring the same for a DA1? I checked voltage at pin 43, and I'm getting a fluctuation of about .01v to about .04 volts. On pin 29 I'm getting about .05 to about .08 volts. I can't really check resistance in the harness until I can get some help next weekend. Do you...
  10. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    Ran the balance test twice, code 90 both times. Arrgh, I did a bad thing, turned back to the early '90's way of tuning, and capped off the tad, tab, egr, ect. Runs a hell of a lot better, I know I'm forcing open loop, but with a 41 and 91, isn't it anyway? It still smells pig rich, I have...
  11. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    Thanks @jrichker , but I posted the wrong code. still having an issue, but it is better. I haven't tried a cod start yet, but i sealed the vacuum line feeding the emission controls, which has yielded better "on throttle" responce, but still surging like crazy at idle. Still getting code 41...
  12. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    Update time. :nonono: So this is new. Got to work on her this past weekend, replaced the IAC, found a vacuum leak at the PCV on the back of the intake, repaired, reset the ECM, triple checked/ reset base timing to 10-11*, reset base idle, 550-600 rpm, and the poor car runs worse. Still have...
  13. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    @jrichker , or any others, is there a test/procedure to check the BAP sensor? It has never thrown a code, but I'm thinking that it could be out of range. Thanks!
  14. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    @Noobz347 , that was next on my list, replace the BAP sensor. ECT was fried due to a :doh:, replaced that (it threw a code), thinking it is temperature related, replaced the ACT with no changes. (Looking back at the surging idle checklist, I was able to test the old ACT, and it was in range...
  15. tca7291

    Engine Arrghhh! Cold Start, Surging/stalling Problem

    Okay, '87 Mustang SD 5 speed. Mods are minimal, off road H, 2.5" cat back, 12* base time, otherwise stock. Pulled codes, only get a code for the thermactor solenoid. My car runs fine, after warm, but at a cold start (less than roughly 50* ambient), she surges horribly, and will stall out if...
  16. tca7291

    1993 Cobra Mustang Hates Me .....sos .. Help ..sos ..help

    If you have the photo on your harddrive, you can just hit the little button under the window that says "Upload a File"
  17. tca7291

    Progress Thread 1986 Ssp Budget Build

    Go with the EFI... do the MAF conversion. Carburetors are dumb. Do I need to call up JR?
  18. tca7291

    Fox Foxbody Help

    You should be!!!:banana:
  19. tca7291

    Fox Foxbody Help

    Fixed! :D I would love to see an '88 with a factory AODE...hehe, I thought you were better than this noobz!:nonono:
  20. tca7291

    Fox Foxbody Help

    +1 That's cleaner than mine by far!!! And I'm trying to keep the stock look!
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