You should check out www.reliable-store.com they
have info on repair, service, wiring diagram, electrical diagram, fuse diagram, troubleshooting, PCV, owner's/service/repair/parts manual, fault codes, error codes, etc everything on all vehicles. must check it out
You will get your solution and all info
on service info, repair info, parts info, wiring/electrical/fuse diagrams, error/fault codes, torque specs, PCV, , owner's/service/repair/parts/maintenance manuals etc everything
this website www.reliable-store.com
it's a very good website for vehicle problems even as old as 1991 ford..
You need to take it to a qualified repair shop that has the diagnostic tool to check DTC'S - diagnostic trouble codes . You have no idea of the complexity of the electronic's . All computer controlled . Do you know what serial data communications netwoking is ?
003 Communications Diagnostics
Moving the ignition switch to the START position sends a 12-volt signal to the engine control module (ECM) to command starting. Battery voltage also travels through the switch side of the Run/Crank relay then through the clutch switch, if equipped with manual transmission, and on through the coil side of the Starter relay and then to the ECM. The ECM receives class 2 information from the vehicle theft deterrent (VTD) and transmission control module (TCM) to verify that all parameters are met for starting. When all parameters are met the ECM grounds the control circuit of the Starter relay closing the switch providing battery voltage to the starter solenoid through a 30 A Maxi-Fuse.
012 GM Class II Communications
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the dash integration module (DIM). The PMM receives 2 signals from the ignition switch.
To determine the correct power mode the PMM uses the following circuits:
• Accessory voltage
• Run/Crank voltage
Fail-safe Operation
Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the power mode master (PMM) fail to send a power mode message. The fail-safe plan covers those modules using exclusively serial data control of power mode as well as those modules with discrete ignition signal inputs.
Serial Data Messages
The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid PMM message until they can check for the engine run flag status on the serial data circuits. If the PMM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is True, indicating that the engine is running, the modules fail-safe to RUN. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is False, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals
Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid PMM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, battery positive voltage, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Did you check the trunk relese fuse 15amp location rear fuse box . How did you check fuse's an relay's ? Did you use a DMM - digital multi-meter ? Did you check the elcetrical circuit ? Do you know how a relay work's ? The BCM - body control module controls the trunk release relay . Check for B+ voltage at the relay .
VEHICLE RELAYS Operation Diagnosis
Hi
Disconnect battery side and put ampermeter in the middle for checking the use from the car ampers
lock the car by the remote for and wait for checking and see how much amp the car still use
after this if its use more than 1 amper
you must check the user that still work in the car
you would be closer to the problem than the dealer
taking it as a column shift , it is very possible that the plastic slides on the selectors out side of the box are badly worn or the rods them selves are worn out
Did you clear the codes? Car may still be in limp mode...
Also the 303 is odd. Are the sparks good on #3? May have an issue with coil or ignition module.
My first guess would be the fuel pump is going bad. Sometimes jarring it a bit will make it work again and the tow may have done it. If it does this again have someone bang on the bottom of the gas tank while cranking, if that cures it then you'll know for sure. If you need further help, I’m available over the phone at https://www.6ya.com/expert/oscar_403cc49e0f00cda7
It can be one of the two,first one is a 9006xs and the second one is a D1S,rate please if this was at all helpful,thank you
