The ignition switch on my 88 Mustang starts my car, but the blinkers and the fan for my ac/heater will not work. If I turn the switch back a little bit, they will work, but if the switch moves forward or hit a slight bump in the road, they quit working again. Is this the switch or could this be a wiring issue? Any ideas?

Hi Kevin it sounds to me like your solenoid that is attached to your starter motor needs replacing had this with a ford cortina mk 5

Replace the retarded ignition switch,the electrical part of the switch only if possible.

If there is no power going INTO the ignition switch, you most likely have a burned fusible link. The ignition switch gets its power from fusible link "A" It is a 16 Gauge, BLACK fusible link connected to the YELLOW wire for circuit #37. The fusible link is connected to the starter relay located on the left fender apron between the washer fluid reservoir and the strut tower.

Circuit #37splits into 3 "legs" at splice #S105. One leg of this circuit goes to the fuse block where it feeds fuse #1 (15 Amp) and fuse #2 (10 Amp).

The other two legs of this circuit BOTH go to the ignition switch. (you should have TWO large yellow wires connected to the ignition switch.)

Ignition key had to insert lately?
Car starts and runs excellent, EXCEPT, when it frequently...
After ignition starts...
A: Brake and Air Bag Lights come on.
B:Tranny SCREAMS only IN park OR neutral.
C: NO A.C or FAN, blinkers, Power windows, radio, mirror motors, YET locks, lights and Engine work EXCELLENT!
SOLUTION: Wiggle forward and back THE IGNITION key!
BAD IGNITION SWITCH!

You need to replace the heater/AC blower motor the motor shaft bearing is defective..

I just started experiencing the same problem. Yes, typically after rainy days, I can never get the interior lights to go out after the ignition key has been removed. The car acts as if there is a door open. Now, my latest problem is with the heater fan. Of course, putting the control in the "off" position will turn it off but you can turn it on and off with no ignition key installed. I'm also having problems with my heater core too so it's been a pain in the but!!

I believe this problem has also caused my battery to die which is why I'm on this site in the first place!! I can't get into the car with the keys and the dead battery won't allow me to unlock the car!! When it rains it pours!!!

Check the ignition switch to see if it's coming apart. You will have to remove the lower trim on column. The electrical switch will separate causing your concern. Good luck.

Sounds like an ignition switch problem. When they do not work, move the key back and forth just a little bit to see if they come back on.

look in the engine compartment for another fuse panel near the battery

The heater/AC temp control blend door is warped and sticking, this is a very common problem in this series of mustang, in order to fix it the dash must be removed.