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  1. 2006 GT Throttle issues

    2005-2010 Mustang GT Tech
    Hey guys, I'm new to the forum. Hopefully I can get some much needed help. These past 3 weeks I have been having issues with my GT. It first started as I was driving down a highway and the RPMs started majorly surging. It started out going from about 2k-4k then gradually went down as I pulled...
  2. 1966 --289 coupe starting issue

    Classic Tech
    Alright .... another issue ... needing assistance. car will start and run initially, once turned off the car will not start again. it cranks but sounds like its not getting enough voltage. checked battery and is ok. 12 volts. checked the coil while cranking and its only registering 5 to 6...
  3. Need voltage output from 02 sensors.

    5.0L Tech
    Wideband O2 to AFR controller to ECU Hey guys. I installed my MXT-L AFR controller along with a bosch style wide band in my driver side bank. I need to know the voltage output from my o2 sensor that my ECU needs to read lamda (or shall I say lean/rich) as I can define this in my controller...
  4. 1966 Mustang Duraspark II Power Source

    Classic Tech
    I have a Duraspark II and Accel Superstock coil that draws power from the original red/green wire to the coil at 9 volts. My car runs well, but after seeing Mustang Steve's diagram (attached), I wonder if I should be concerned with my wiring. My resistor wire is still in place, and my brown...
  5. 1965 Mustang light intensity

    Classic Tech
    Yesterday, while parking my 1965 Mustang Convertible in the dark, I noticed something interesting. When the engine was idling, all lights (headlights, instrument lights, courtesy lights) had a very low glow intensity. But when I increased the engine's rpm, the light's intensity also increased...
  6. 1986 mustang GT TPS problems

    5.0L Tech
    So I was setting my Tps. Couldnt get it bellow 105. I had another on a extra intake manifold in my shed. So I swapped it. Set it to 96. But when I start the car it jumps up to 105 - 108 and jumps all around. Some times hitting a low of 44. The idle has changed between the two tps's I have a bad...
  7. 1986 Mustang GT voltage issues altenator replacement 3g?

    5.0L Tech
    Okay im considering buying a 3g or 6g one wire alt. what is required? besides the bracket modifycation. I found several forum posts but none for my car. The issue Im haveing now is the car runs but does not charge the batt. If I leave it running for 40 mins and try to roll up the window it...
  8. 1986 GT voltage continued

    5.0L Tech
    OKay so I have this issue where the car will start run but not charge the battery. sometimes I will get a few starts before the battery is dead. unless I let it runn for 40 mins then if I attempt to roll up a window. it will stall. I get an odd idle after the battery is drained. but the car...
  9. 1986 mustang gt electrical? problems?

    5.0L Tech
    Okay so one day I moved the car batterys fine everythings okay then I go to restart it. dead battery jump it, drive it around bucking tugging in gear while not pressing on the gas. uneven idle revving. turn it off battery dead again. jump it head unit wont work. checked wires to headunit all...
  10. 1966 Mustang Only charging at high RPM

    Classic Tech
    Hi, I just got an A/F from autometer. This gauge has the feature that it turns itself on when the battery hits 13.8 volts, witch means it will not turn on before the engine is started - in theory. In real life I have to rev the engine up to about 3500 rpm to get it to turn on. What is most...
  11. OBDII Not Getting Power

    4.6L Tech
    Hey All, I recently ordered an SCT SF3 tuning device and when I plugged it in to my 2003 GT nothing happened. I tried it in my brother's 1999 GT and it turned right on. After some investigating I checked all of the fuses and none of them were blown. I grabbed a multimeter and starting poking...
  12. 1967 Mustang, do I need constant voltage unit?

    Classic Talk
    Howdy all! I am installing aftermarket gauges, auto meter, into my 1967 mustang. do i need to install a constant voltage unit like was used in the old gauges?
  13. MII starter sylanoid clicking upon start up.

    Mustang II Tech
    Replaced altinator, voltage regulator, both battery cables. I'm out of ideas. I also replaced the starter slyanoid aprox. a year ago. If you jump it, it starts. . . I dont get it, I'm so so lost! Please Please help!!!!!!!!!!!!!!!!!1 :?::?::?::?::?::?::?::?::?:
  14. 1998 ford mustang gt, dies while on freeway at speed.

    4.6L Tech
    A simple question with a difficult answer. 1998 mustang gt. all stock. starts fine runs fine until i have sat in a little traffic. volt gauge drops, lights fade, ac blows hard then soft and not cold, no response from gas pedal, no brakes, no steering. took it to local dealership,diagnosed it...
  15. 2006 Mustang GT alternator problems

    2005-2010 Mustang GT Tech
    Anyone have alternator problems in their newest generation mustang? Im on my third alternator in my 06 GT, the reason is my after-market subwoofers (JL Audio 1000/1 amp), but i would think a capacitor would help. Should I get an extra battery dedicated to the speakers, or should i get a better...