Idle drops when keying cb radio mic
2000 superduty 7.3.....I have a professionally installed and tested CB radio in my truck that has worked for many years. Recently when keying the mic the engine rpm drops to about 500rpm. when releasing the radio mic key the rpm returns to normal.
I took the truck to a cb shop today. They installed a test cb radio and antenna. The test system had the same affect on the engine RPM. Is there a Ford noise filter on the computer or some other ford electrical component that may need to be shileded or replaced?
Last edited by mike60retired; 04-06-2009 at 07:19 PM.
Reason: adding information