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  1. jrichker

    Fox Help diagnosing a problem

    Putting compressed air into the engine cylinders is the best test for compression and leakage. If you hear the sound of compressed air leaking at the oil filler intake, you probably have a broken top ring or damaged piston. If you have a broken piston ring, it may have scored the cylinder wall.
  2. jrichker

    Electrical Battery Drain

    @DemonGT You need to set the meter to the current measuring function - Amps and not volts. Voltage is the pressure in a water hose that makes it squirt. Little leaks can squirt just like big leaks. Current is volume of flow that fills the bucket. A little squirt will fill the bucket much...
  3. jrichker

    Engine How to check for lower intake vacuum leak at lifter valley?

    YouTube has some quick and easy tips on how to make a smoke machine. It is worth your time and money to check this out. Otherwise... See the last paragraph below for how to check for vacuum leaks inot the lifter valley... Finding vacuum leaks Revised 6 May 2018 to add carbon canister...
  4. jrichker

    Suspension 88 GT Steering Wander At Speed - Zero static steering play

    @BusterLeroy Insufficient caster will cause the wandering feeling. Does the steering wheel want to return to center when a turn is completed? If not, then the caster needs to be set.
  5. jrichker

    Fuel Fuel injector leaking from fuel rail

    Do you have the 2 screws that hold the fuel rail in position installed? Ae there any dents or damage to the fuel injector rail cap for the fuel injector? Any scratches or nicks in the injector cup? Are the pintle cap, O ring that seals the injector, and washer that goes between the injector body...
  6. jrichker

    A/C and turn signal lights off until I wiggle the ignition key??

    The A/C control system uses engine vacuum to operate the flapper valves that control airflow to heater and A/C. You get to look for a broken or disconnected vacuum line in the passenger compartment or under the hood. Start with the passenger compartment first...
  7. jrichker

    302 won’t start(slow cranking over)

    No Crank checklist for 5.0 Mustangs Revised 05-Oct-2010 to update Fluke references. No crank. slow crank and stuck starter solenoid problems have the same root causes – low battery voltage and poor connections. For that reason, they are grouped together. Use the same initial group of tests...
  8. jrichker

    A/C and turn signal lights off until I wiggle the ignition key??

    Recall on Ford Ignition switches: Revised 7-June-2014 to add Torx bit picture and source. Also added replacement ignition switch wiring pigtail picture, part numbers and sources. Some of the symptoms of ignition switch problems are things that don’t work or are intermittent like radio, turn...
  9. jrichker

    Fuel gauge pegged to the top, car shuts off

    Fuel Quantity gauge troubleshooting 87-93 Mustangs Revised 8-Apr-2017 to add warning about non-interchangeable fuel tank senders between 79-86 and 87-93 Mustangs. The red/yellow wire (power supply to gauge & sender) should have 12 volts when the ignition is in the start or Run position...
  10. jrichker

    Codes 32, 67, 82, 95 And Other Problems

    Will the computer dump codes when the following test is run? Dump the codes: Codes may be present even if the Check Engine Light (CEL) isn't on. Dumping the computer diagnostic codes on 86-95 Mustangs Revised 26-July-2011. Added need to make sure the clutch is pressed when dumping codes...
  11. jrichker

    90mm Lightning MAF

    They never put a J58 in a car, so what do you have.? What engine and mods are you running that you need a 90MM MAF? Never heard of a J58? Check this out...https://en.wikipedia.org/wiki/Pratt_%26_Whitney_J58
  12. jrichker

    Engine With all smog components deleted, will that activate a CEL?

    It will run OK, but it may have some odd things. A properly working EGR helps with the gas mileage a bit, but if the computer doesn't see the EGR sensor, it will bypass the EGR functions in the computer's firmware.
  13. jrichker

    Engine New to Mustangs, guidance needed on fault codes 47 & 45

    Check the VIN Code - your auto insurance agent will be glad to inform you. Or just use Google to look up the Vin Code definitions
  14. jrichker

    Complete shut down w/code C-18

    Code 18 - SPOUT out or wiring fault - look for short to ground in SPOUT wiring going back to the computer. Possible bad TFI or defective 22 K resistor in the IDM wiring Revised 24 June 2019 to add comment about the need of thermal paste on TFI mounting surface. Use a timing light to check the...
  15. jrichker

    Electrical 1992 GT Code 66

    Code 66 or 157 MAF below minimum test voltage. Revised 2 Nov 2019 to add details on MAF testing Insufficient or no voltage from MAF. Dirty MAF element, bad MAF, bad MAF wiring, missing power to MAF. Check for missing +12 volts on this circuit. Check the two links for a wiring diagram to...
  16. jrichker

    1991 5.0 - fires up every time, idles perfectly, but once it’s warm it won’t idle for more than 15 seconds

    Code 41 or 91. Or 43 Three digit code 172 or 176 - O2 sensor indicates system lean. Look for a vacuum leak or failing O2 sensor. Revised 01 Sep 2019 1.) To emphasize do not attempt to measure the O2 sensor resistance. Disconnect the O2 sensor from the wiring before doing any resistance...
  17. jrichker

    Engine New to Mustangs, guidance needed on fault codes 47 & 45

    The 45 & 47 codes are codes that I haven't seen on Stangnet in the last 20+ years that I have been here... They may be spurious codes that didn't get read properly when the codes dumped. Code 45 - (engine running) Electronic Ignition – coil primary circuit failure – Ignition Systems. Check...
  18. jrichker

    Engine Coolant leak after replacing water pump

    @Olivethefet Old cars are like rain; just when you think it has cleared up, it starts again somewhere else... Look for rust stains after letting this go on for a little while longer. That's a clue as to where to look next I couldn't get the heater hose connections to stop leaking. I emery...
  19. jrichker

    Wheels-Tires Anyone have a part number for baby moon hubcaps that fit a turbine wheel?

    I am thinking about polishing the rim face and spoke faces on the turbine wheels that I have. I will be spraying the inner rim, hub, and spoke sides to match the car paint. Does anyone have a part number for baby moon hubcaps that fit a turbine wheel?
  20. jrichker

    Electrical Accessory power on rolling chassis

    The fuse links for all model years 86-93 live in the wiring harness near the starter solenoid. Starter solenoid wiring for 86-91 Mustang Wiring Diagrams: See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring Mustang FAQ...
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