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  1. rock4451

    Electrical Calling all wiring guys - absolute head scratcher

    I am going to have the MAF tested as the MAF sig and MAF RTN wires were giving me 0.11v at idle. After that I’ll take a deeper look.
  2. rock4451

    Electrical Calling all wiring guys - absolute head scratcher

    Pretty sure .04v between SIG RTN and batt neg terminal proves I have a short somewhere. I need to locate the short or faulty sensor.
  3. rock4451

    Electrical Calling all wiring guys - absolute head scratcher

    New capacitors didn’t fix the issue. Good news is throughout this process I found several loose terminals and so forth that I’ve corrected. I went through the 60 pin connector and pinched the female ends together so there is a solid connection between harness and computer. Good news is it...
  4. rock4451

    Electrical Calling all wiring guys - absolute head scratcher

    @jrichker or anybody have advanced tests to do on my MAF? Testing at the MAF connector, disconnected, when I touch the blue wire and tan wire, I’m getting 5.83v, when I touch the tan wire and the black ground wire I’m getting 5.92v. Touching the red 12v and black ground gives me battery voltage...
  5. rock4451

    Electrical Calling all wiring guys - absolute head scratcher

    Okay, so I got it to start and idle (idled very low, throttle response was garbage) and when I turned the computer physically 90 degrees, the car killed. Retried this test 3 times and same results. Inspecting the harness, there are no bare wires and no loose terminals. I am testing the...
  6. rock4451

    Electrical Calling all wiring guys - absolute head scratcher

    Yes I do, I have dealt with the pin 46 headache in the past so it was the first thing I checked.
  7. rock4451

    Electrical Calling all wiring guys - absolute head scratcher

    Here’s one, before I dropped the engine in a couple months back. Has been running amazing until this most recent hair-puller. Tomorrow I’m going to disconnect the ground that attaches to the body, pull the main ECU connector through and visually inspect for exposed wires or anything that may be...
  8. rock4451

    Electrical Calling all wiring guys - absolute head scratcher

    Definitely going through that tonight! Off topic, how do I get a fancy 10yr member badge like you have??:cool:
  9. rock4451

    Electrical Calling all wiring guys - absolute head scratcher

    I have an 86 GT that out of the clear blue, has an inexplicable issue. When I start the car, it starts up and dies 2 seconds later. Rinse and repeat, regardless of how many times I try. I remove the chip in my A9L computer (it has been tuned) and it runs, roughly, but it runs. I have dumped...
  10. rock4451

    Engine 95 5.0 Loose/leaking Power Steering Reservoir

    Hey guys, Finishing up my build and one of the last things on the list is the power steering pump reservoir. I've noticed when I fill it up, the next day the carpet under it is moist and upon further inspection, the plastic reservoir is not tightly fastened to the metal on the pump. It's not...
  11. rock4451

    86 Mustang Heat Troubleshooting - Help!

    Found the problem. Posting pics now.
  12. rock4451

    86 Mustang Heat Troubleshooting - Help!

    Update, I've discovered through the help of another poster that page 78 is for heat ONLY cars and not AC AND Heat cars.
  13. rock4451

    86 Mustang Heat Troubleshooting - Help!

    When going through those pages in the manual, I found this; which wire colors reflect exactly the colors that go to my resistor assembly pictured in post #6. I'm wondering now if there is another resistor assembly I'm missing or what. The one I have in post 6 is right behind my glove box on the...
  14. rock4451

    86 Mustang Heat Troubleshooting - Help!

    Yes that's where it was. I'm just confused as to why diagrams show brown/orange wire and my resistor assembly has yellow with red and light green with white on the bottom terminal. I'm not home now to trace where those wires lead to. Could I put 12v to the orange wire and ground the black wire...
  15. rock4451

    86 Mustang Heat Troubleshooting - Help!

    My CC255 connector is hanging by itself and isn't on the same assembly as my resistors. Here is my resistor, top left is yellow with red, top right is black, middle wire is orange with black, and bottom wire is light green with white. This doesn't reflect the wiring in the diagram you...
  16. rock4451

    86 Mustang Heat Troubleshooting - Help!

    Thank you very much, I'll have a look here in a minute.
  17. rock4451

    86 Mustang Heat Troubleshooting - Help!

    So I got the 86 started and running! What a relief, such a good feeling to hear it fire up with no leaks, but when I hit the switch for the heat, nothing happened. I do not remember connecting any vacuum lines for the heater, the car has no A/C, and the fan does not blow or turn on when I flip...
  18. rock4451

    Wiring Harness Connector Questions - Black & Grey 8 Pin

    So here are the connectors I'm having trouble with, and I've discovered I'm most likely using a 90-91 harness. I have the diagram mostly figured out, but the Light Blue/Yellow wires are having me 2nd guess myself. On the 86 connector, light blue/yellow says it goes to PIN 30 of the EEC, where...
  19. rock4451

    Wiring Harness Connector Questions - Black & Grey 8 Pin

    It should work now, sorry for the hold up! I know the lights are kind of bright in the pictures, I took these last night and didn't think to mark down the exact wire colors that go into each connector. If that would help, I can do that as well.
  20. rock4451

    Wiring Harness Connector Questions - Black & Grey 8 Pin

    I'm using an 89 harness to put a 5.0 into my 86, almost done, except a couple hold-ups. There are 2 connectors on the driver's side, a grey 8 pin and black 8 pin (could be brown, it is faded) pictures are below. I am running NO A/C on this car, mechanical gauges that are all done and wired, but...