Recent content by cmc3

  1. cmc3

    Roof Rack Part

    The whole rack assembly comes apart. The end caps snap on, I found that large carriage bolts fit the main rails perfectly.
  2. cmc3

    Turbo Boost causes CB buzz

    I replaced all the plugs and coil packs. The noise went way down. The engine also seems to be running smother. The ignition buzz is still present, but way down. I have a solid ground to a nearby piece of chassis on the back of the radio. Next is to check the grounding at the antenna.
  3. cmc3

    FORScan codes that came up

    I get a similar problem on my 2017 XLT. After it rains, when the car has been sitting for a few days. My solution has been to let the engine idle and warm up. Then shut it off and re-start. On the re-start all modules seem to initialize correctly.
  4. cmc3

    Turbo Boost causes CB buzz

    I have 3 ferrite slugs in-line with the +12. Ground return is about a foot of heavy copper wire bolted to a welded piece of frame. I also added a 0.01uf across the +12/GND just inside the chassis.
  5. cmc3

    Turbo Boost causes CB buzz

    I have zeroed in on the plug coils. I pulled them all, scrapped corrosion, checked contacts, a moved them to different cylinders, Didn't make any difference. Today, I went through and checked the radio antenna and DC grounds. Re-did the chassis ground to get a better connection, didn't help...
  6. cmc3

    Turbo Boost causes CB buzz

    A little update to my CB noise investigation. I found the radio "noise blanker" settings were suppressing some of the noise. Once disabled, the noise appeared to be plain engine ignition noise. A RPM related buzz. I pulled all the plug coils, scrapped corrosion and made sure all the coils...
  7. cmc3

    Turbo Boost causes CB buzz

    I'll give it a shot, once I get back to the simulator.
  8. cmc3

    Which Scan tool?

    Works great, lots of functions and diagnostics. https://forscan.org/[FORSCCAN.ORG]
  9. cmc3

    Turbo Boost causes CB buzz

    I created a crude wire "expedition" in xnec2c. Tried various whip placements. The center of the roof gets the best omni-directioal coverage. The attached simulations are for a wire loop on top of my roof box. It needs a little tweaking to get the match, but it has a nice broad band response...
  10. cmc3

    Turbo Boost causes CB buzz

    Thank's to all for the good suggestions. I think my next step will be to re-work my antenna mount to ensure good ground contact between the coax shield and car body at the mount point. Then use a spectrum analyzer to correlate noise with sources. The antenna is a loaded whip center mounted on...
  11. cmc3

    Turbo Boost causes CB buzz

    This could be it. I drilled a hole in the roof. The coax ground to the roof metal may have gotten flakey. I need to rework the antenna anyway. It has intermittent VSWR problems. Dry <1.4, wet >2.5 sometimes driving it changes.
  12. cmc3

    Turbo Boost causes CB buzz

    After a bit of investigation, you are correct. There is no electrical boost pump. I did find a electrically operated, "Turbocharger bypass valve."
  13. cmc3

    Turbo Boost causes CB buzz

    I'll go back in and look. Possibly add a ground strap. I didn't put multiple ferrite chokes on the +12 which helped. The turbo boost kicks in when you accelerate and drops once you are at speed. I listened to the noise for awhile to associate the sound. There is other noise associated with...
  14. cmc3

    Rough idle after new coil packs & plugs

    If you have FORSAN reset the engine control module. Also check for misfiring cylinders. Could be the coil packs didn't seat correctly or are NFG.
  15. cmc3

    Blue Screen on Rearview Mirror Temporarily

    I have a 2017, the rear camera goes out periodically. There is a coax connector inside the lift gate that needs a wiggle. I unsnap the trim at the top of the lift gate a reach down to get to the connector with my finger tips. Doesn't take much wiggle, but it fixes the problem.
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