1997 Ford Mustang over drive light flashing while driving

P0305 is a # 5 cylinder misfire , do you know what that is ? Check engine light flashing indicates a severe misfire that can damage the catalytic converter . Don't drive this vehicle ,take it immediately to a qualified repair shop or the dealer .
A Ford P0171 is a LEAN code for cylinder bank 1, and P0174 is a LEAN code for cylinder bank 2. These codes commonly occur on many Ford vehicles, and are set when the powertrain control module (PCM) sees the air/fuel mixture is running too lean (too much air, not enough fuel).

Flashing check engine light CarMD

probably cause by the a/c cutting in and out or running at idle . Fit an idle compensator to the system throttle or raise the idle speed 300rpm.

Hey Lg,,
Have your battery/alternator checked at a battery/alternator shop... you may have a loose connection or one or the other is going bad..??

you have checked the fluid level right?

he overdrive off light flashing indicates that a problem with your
transmission has been detected. Take it to the dealer or a transmission
shop and get it checked out. If you continue to drive the Explorer with
the O/D OFF light flashing you can possibly damage the transmission.


Ford has issued a TSB on this problem. Has to do with a transmission oil pump defect and repair procedure.
Article No.: 97-22-4
Date: 10/27/97
Transmission - A4LD, 4R44E/4R55E, 5R55E - Torque Converter Slip - Diagnostic Trouble Code (Dtc) 628 Or P0741 Stored In Memory
Ford:
1985 to 1993 Mustang
1987 to 1988 Thunderbird
Lincoln-Mercury:
1988 Cougar
Light Truck:
1985 to 1990 Bronco II
1985 to 1997 Ranger
1987 to 1997 Aerostar
1991 to 1997 Explorer
ISSUE:
Some vehicles may experience excessive torque converter slippage, torque converter not engaging, or Diagnostic Trouble Code (DTC) 628 or P0714 stored in memory. This may be caused by damage to the fluid pump support seal and/or to the groove on the pump where the seal is located.
ACTION:
Inspect the fluid pump seal for damage. Refer to the following Service Procedure for details.
SERVICE PROCEDURE:
1. Follow normal diagnostic procedures as listed in the appropriate Service Manual.
2. Inspect the fluid pump support for damage. If damaged, also inspect the fluid pump support seal groove on the pump.
3. If the groove is damaged, replace the pump.
4. If the groove is not damaged, replace the fluid pump support seal with a redesigned Seal (F77Z-7L323-AA). Refer to Figure 1.
5. Do not replace the torque converter unless it is damaged or fails the criteria listed in the appropriate Service Manual and/or refer to TSB 96-26-12.

30 minutes or seconds? does the dome lamp come on, like one of the doors not closed all the way? A good repair shop or the Ford dealer can get a scanner and watch for the belts, doors, lights, ect ( I think thats the only thing that will ring a chime) as you drive and see whats making it go on.

the flashing light means is a severe issue that could cause catalytic converter damage, probally a bad coil known for it in the 4.6l and 5.4l, need to scan computer and retreive code to ***

your Transmission is controlled by a cable on the mustang. it could have Came off of the transmission. it just snaps on to a lever on the transmission. or the cable broke. other wise it came unhooked from your shifter.

sounds like ecm lost signal from key

have someone scan it for transmission codes. Most likely it is your Torque Converter that is going out, but it could be a solenoid, What color was your fluid?