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When I switch on the A/C or heat the the flashers freeze, I can't shift from park, radio stops working

Tiny
MVANN74
  • MEMBER
  • 2006 FORD F-150
  • 4.6L
  • V8
  • 4WD
  • AUTOMATIC
  • 134,865 MILES
With the truck running when I switch on the A/C or heat the the flashers freeze, I can't shift from park, radio stops working, all dash indicator lights come on, and theres a loud click coming from the passenger side kick plate fuse panel. All fuses and relays are good. But when I remove relay # 6 everything is normal. Plug it back in and the problems come back. Every relay with the same number as #6 does this. Could this be a ground issue? Or do I have a much bigger problem on my hands.
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Saturday, May 8th, 2021 AT 1:05 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

Is this the panel for the relay? I attached a picture for you.

Roy
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Saturday, May 8th, 2021 AT 3:58 PM
Tiny
MVANN74
  • MEMBER
  • 65 POSTS
Yes. This is it. If I remove thus relay. Everything is normal. Plug it in and the hazards stay on but not blink, high beam indicator light stays on, radio is not working, blower motor stuck on low, cant shift from park. And all this happens when I turn an the climate control switch.
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Saturday, May 8th, 2021 AT 7:48 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Thank you.

I attached a wiring diagram of the relay. It controls the blower motor system.

Disconnect the blower resistor and see if the issue is still present. If it is, you have a wiring harness issue.

If that does not do it, reconnect it and disconnect the blower motor and see if it is still present.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Roy
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Sunday, May 9th, 2021 AT 5:10 AM

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