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  1. DieHarder

    2010 ECM Issue or Something Else?

    FWIW, with the engine running what is the voltage DC across the battery? If less than 14v you likely have a grounding issue; especially if you have voltage drops from the body (ground) of the alternator back to the ground on the passenger strut tower. If so, you need to fix that first. See...
  2. DieHarder

    Need advice on resolving low-beams issue

    Here's some troubleshooting help. Here's the circuit: https://iihs.net/fsm/?d=40&f=Headlamps. Autolamps.pdf&p=1 https://iihs.net/fsm/?d=40&f=Headlamps.%20Autolamps.pdf&p=2 And here's step by step troubleshooting for the headlamps: Headlamps: https://iihs.net/fsm/?d=389&f=Headlamps.pdf...
  3. DieHarder

    Lowering on Bilstein B6?

    BTW, if you have B6's you're going to need GT500 Strut mounts (they're more heavy duty anyway). B6's will not work with standard GT mounts. The mounting holes are different and won't match up if you try to use the GT version.
  4. DieHarder

    Lowering on Bilstein B6?

    B6's are good struts/shocks. Just don't run them too low. IMHO around 1/2 - 1" lower which is about where I run mine (Roush springs/Bilstein B6's). Keep an eye on your rear bump stops as you may need to cut them down about an inch as well. One other thing; spin your front upper strut mounts 180...
  5. DieHarder

    Supercharger Inlet/Outlet Hoses

    Naw, mine was already drilled for 1/4 & 3/8" pipe fittings. Just had to remove a couple of plugs and thread the sensors in. Got my manifold/system from Dept of Boost. Very well engineered. See below: IAT1 Ambient - Non-compressed - threaded into elbow (white/black) wire & sensor. IAT2...
  6. DieHarder

    Supercharger Inlet/Outlet Hoses

    If you're running a bypass then you won't see coolant flow in the tank (or very little if at all) because the bypass is handling the majority of the flow thru the system. As long as you don't hear cavitation (pump should be pretty much silent) and your IATs are low the system is operating as it...
  7. DieHarder

    Taillight trouble

    I would try disconnecting/checking-bending/reconnecting the wire harness for the offending tail light. Then pull the bulb/s; inspect and move them side to side in case the problem is a socket/bulb. Sounds like a loose bulb, loose wire, possible intermittent loss of ground/+12v in the wiring...
  8. DieHarder

    Supercharger Inlet/Outlet Hoses

    I have the same pump. You should see the same flow in and out. Coolant should be pouring in at a fairly good rate at the top of the degas tank and disappearing at the same rate at the bottom since it's a closed system. If not, possible you still have air in the system. To improve overall flow...
  9. DieHarder

    2007 SJB issue

    Juice/86GT351 are correct. You likely misaligned/damaged one of the connectors/wires/fuses that are part of the BEC or SJB. It's very easy to misalign/damage the connectors or one of the pins to the SJB if you're not careful (or even if you are); not to mention that corrosion on the PCB's is an...
  10. DieHarder

    07-09 OEM Navigation Radio & Antenna

    Still have this? Any idea if it'll work in an '06?
  11. DieHarder

    2007 Mustang automatic shifter wiring.

    If you're gonna use the manual that JC posted reference Pgs 136, 142, & 144. Another manual that might help: https://iihs.net/fsm/?d=40&f=Transmission%20Controls%20-%205R55S.pdf https://iihs.net/fsm/?d=40&f=Electronic%20Engine%20Controls%20-%204.6L.pdf&p=7
  12. DieHarder

    Transmission issue

    Likely that your servo bores are worn and need replaced. There's a kit out there that takes care of the problem but best to have it analyzed first to ensure that's the issue... If it is the servo bores it's the least expensive fix available. Utube: Also. here's a few links that describe most...
  13. DieHarder

    Here's an online shop manual. Might help: https://iihs.net/fsm/?d=0

    Here's an online shop manual. Might help: https://iihs.net/fsm/?d=0
    • DieHarder
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  14. DieHarder

    Steering issues with 07 GT

    If your steering is sketchy/wandering you need to know why. A good alignment shop should be able to tell you. In my case I found the lower half of my steering column needed to be replaced. Money well spent. Best handling/comfort combination I've found to date are Roush springs paired with...
  15. DieHarder

    2008 bullitt electrical problems?

    List the error codes you're getting. Then look them up online and in the manual: https://iihs.net/fsm/?d=10 Alternator Charging system: https://iihs.net/fsm/?d=358 Hopefully these help narrow down problem areas.
  16. DieHarder

    2008 bullitt electrical problems?

    You might try a google search. If you have it down to C110 you need to chase each wire to determine if there are other wires shorting somewhere. Here's a few articles/references to one I just did...
  17. DieHarder

    2008 bullitt electrical problems?

    Found it: Reference above: C110 Pin 12/ (Circuit 570) is related to the MAF and engine controls.. See lower right section of the diagram: https://iihs.net/fsm/?d=40&f=Electronic Engine Controls - 4.6L.pdf&p=2 I have seen cases where the MAF wiring has become shorted. In any case there's a lot...
  18. DieHarder

    2008 bullitt electrical problems?

    Well, appears you have a short/active component failure or possibly a diode that's failed. I'd check the PCM Power diode to make sure it's good. Unfortunately, the online manual doesn't show what each fuse services so I'll fill in the blanks. When I have more time I'll delve back into this to...
  19. DieHarder

    Supercharger install shop around Detroit?

    Not too far from Detroit. Probably a good resource for shops in the area: https://www.departmentofboost.com/
  20. DieHarder

    2006 mustang gt no crank

    Questions: Did you do any work recently? Have you done any modifications to the car? (It's often the case that modifications end up becoming current draws that will drain the battery after a week or so. They usually trace back to some sort of modification - LEDs/Stereo mods, etc). Is the...
  21. DieHarder

    Larger fuel pump

    This might be the easiest solution for what you want. https://www.cjponyparts.com/walbro-high-performance-fuel-pump-kit-400-lph-2005/p/FP281HP2/?srsltid=AR57-fARmlOxRMt3wjgbklIjEV10-b7KSG7Si-YKRAsbunfuNgltwPtzRRM
  22. DieHarder

    2014 Mustang GT Fuel Injector Help

    Did you do anything to the car (update tune, replace plugs, etc) prior to symptoms showing up? At some point may be worth having a diagnostic scan by the dealer. In my case a dealer scan said I had two bad coils after I installed new plugs and an entire set coils. Had the same running symptoms...
  23. DieHarder

    Question About GT500 Driveshaft Fitment on GT

    Hmmm.... :rolleyes: Maybe the reason your buddy was selling it? Tell him to give you your money back.
  24. DieHarder

    Stalling, jerking and beeping

    Glad it's running. Now try to keep it out of the elements if you can. Check and clean the rubber water drains (one each side) on the lower firewall in the engine bay. Also check the upper window seals. It's often the case that they're clogged or the window seals are bad which allows water to...
  25. DieHarder

    2008 mustang gt

    Those plastic rings are there to route/hold the cabling in place. Nothing to worry about other than finding a couple of nuts to keep the cabling in place but not absolutely necessary. F20 is a fuse in the SJB (Smart Junction Box) that feeds the radio. If it's bad then your radio should'nt work...

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