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  1. Noobie Bronco Tech Questions. Flame free zone!
    Hey y’all, I’m putting my bronco back together today and after I put the upper intake back on I noticed this sensor, unplugged. It’s at the rear of the engine, super close to the fire wall, right behind the intake manifolds. I cannot for the life of me find a reasonable place where it should...
  2. Noobie Bronco Tech Questions. Flame free zone!
    Hey all, I am rebuilding a 1986 bronco with my dad. We are rebuilding the engine and accidently broke this sensor that is on the intake manifold. It broke while I was tightening down the manifold.. it is right by one of the bolts... should have installed it after torqueing down the bolts. From...
  3. Noobie Bronco Tech Questions. Flame free zone!
    Hey guys, So I have been experiencing issues with my rpms sticking... It seems to just do it randomly but it'll get stuck at 1500 rpms then it'll drop down almost like its gonna quit and go back to 700 rpm I have replaced the IAC and I have replaced the throttle cable since the one I had would...
  4. Noobie Bronco Tech Questions. Flame free zone!
    Well after I've replaced all the different sensors like the MAP, TPS, IAC, etc...new plugs, plug wires, coil, cap and rotor...things seemed to be going pretty good... Then it got HOT outside. I can run around most of the morning with no issues...then afternoon temps in the mid to upper...
  5. 1980-'96 Bronco Tech
    On this never ending mission to get this baby running right I now have a code 25. Did some searching on here, found some posts saying if you have 2.4-2.6 volts at the connector you're golden. The Haynes Manuel says it needs to be at least 5 volts with key on engine off. :eek: I've got wiring...
  6. Blog
    1987-1989 Speed Density Truck 3-wire HEGO (Single) HEGO SIG at EEC Pin #29 HEGO GND at Sensor body 1990-1995 Speed Density Truck 4-wire HEGO (Single) HEGO SIG at EEC Pin #29 HEGO GND at EEC Pin #49 1994-1995 5.0L Mass Air Truck 4-wire HEGO (Single) HEGO SIG at EEC Pin #44 HEGO GND at EEC Pin...
  7. Blog
    The TPS is a three wire sensor that measures the throttle plate opening and its rate of change. This sensor is a variable resistor, also called a potentiometer, that is directly linked to the throttle plate shaft. The TPS outputs a voltage directly proportional to the throttle opening. As the...
  8. Blog
    Here is the word on MAP/BAP... The MAP (Manifold Absolute Pressure) Sensor measures Vacuum Pressure for the PCM which constantly changes depending upon engine load. Typically used in EFI Speed Density, the MAP provides instananeous Manifold Pressure data which is cross-referenced with engine...
  9. Noobie Bronco Tech Questions. Flame free zone!
    So I have decided that with my recovery gear and other valuables its time for an alarm. I need something that has a few motion sensors for the cargo area, that way if somebody tries to snatch something with the top off they get a surprise. I also want the ability to put a very loud siren inside...
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