wiring to the instrument cluster is faulty. Doors will not lock when gauge cluster is disconnected because they share the circuit. Take out gauges and clean/dialectric grease connections...problem should go away
Yes.
Yes
If they dissolved they would plug up the fuel filter.
2
I have a 99 jeep sport cherokee, my book says it is 15 fuse size 25 for door locks. My door lock has just been giving me problems, sometime it works, not sure if the motor is going out on the lock. Good luck
The shaft locks when power not applied.
No.
Not sure how to help, other than you will have to use bolts that fit.
The stepper motor is located in the instrument cluster. The stepper motor is what turns the needles in all the gauges.
Yes. It's the same setup.
set the pitch on the motor there should be a pen that locks it in place
Seek the help of a trusted mechanic to see why it locked up.