1999 Ford Expedition Q&A

1999 Ford Expedition Question: loud noise when in park in engine

my engine makes a loud knocking noise when in park and when I shift to drive it stops but when driving my 4x4 sensor light flashes when driving and my radio goes in and out -
Answer 1
The knocking noise is just a guess from not hearing the noise, possible torque convertor nuts or flywheel. Electrical needs to be diagnosed. -
Answer 2
scan trans codes or get a free diag and est from aamco then post results b4 repairs are made -
Related Items:
my radio goes out when driving and my 4x4 sensor light inside dash flashes and when Im driving and come to a stop it makes a loud fanning noise in engine. also when I turn off engine in the inside ...