My 2004 Crown Vic turn signal will not turn off as I turn the corner any other time it would but for some reason it has stopped working. What could be the problem?

Use vinegar to unfreeze

Hi,

Inside the switch mechanisms are plastic pieces that actuate the cancelling of the turn signal. Typically, you have to replace the turn signal switch. Not terribly easy and you need to deactivate the air bags, use steering wheel puller and a lock ring puller.

The wires are sometimes really difficult to reefed, sometimes not.

could be airlock in heater core

check your fuses! then operate turn signals, then horn. find which one blows the fuse!

the key doesn't work in the door locks?

If that's the case than your only alternative is to call you local towing company or locksmith and have then perform a lockout service.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

check temp sensors i believe there are two or three one under dash on both passenger and drivers side and one in middle under center of console

I would go for one.
Fuel Pump quit.

It's normal on the AOD transmissions. Their first gear uses straight cut gear and thus has the whining noise. Gear 2, 3 and 4 are helical gears and thus quiet.

i believe it is part of the wiper motor which should be located in the driver's side rear corner of the engine bay, on the firewall. Many 03 and up Fords use a "Smart motor" for the wipers which has the motor and a module in one piece.

here is a diagram

My heat nor turn signals work worked fine then stopped. I have a 91 lx crown Victoria