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Re: My son put the wrong key in my Dodge Ram and now...
I would advise to check the contacts of the ignition in your steering column. The wrong key may have been larger in some parts that it and may have caused connection to come loose or disconnected. Inspect the ignition and see if it can be remedied by physically moving back parts or soldering.
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SENTRY KEY IMMOBILIZER - IF EQUIPPED
With this system, an electronically coded ignition key
sends a signal to the vehicle electronics. If the electronics
recognizes the signal, the vehicle will start and continue
to run. If the system does not recognize the signal, the
vehicle will start and run for 2 seconds, then shut off.
After six unsuccessful attempts at starting, the system
will shut down until the correct key is used.
That's exactly what happened when I cut a new key and tried to start the truck without programming the key. So it looks like your truck is not recognizing the key.
If you have another key, try that one.
Or, try and disconnect the battery for a while, that clears up a lot of electrical problems.
Have it checked for DTC'S - diagnostic trouble code's . I suspect the problem is with the tdm module or the ignition switch ???? Assuming will only get you into trouble . If the PCM - engine computer does not see the right coded meassage from the TDM it won't turn on the fuel injectors or it will cut them off in two seconds . . Buick Security Systems 1998 Chevy is the same .
Ignition Key With Wrong Resistor Pellet Code is Used To Start Engine
The theft deterrent module performs one of the two following actions when you attempt to start the vehicle with a wrong ignition key:
• There are 15 PASS-Key® II resistance ranges. The PASS-Key® II resistance may be one of the 14 valid but incorrect PASS-Key® II resistance ranges. The theft deterrent module will perform the following actions when you attempt to start the vehicle (if the condition is present during an engine start attempt or for 1 second any time after the engine has started):
• Turns on the SECURITY indicator
• Sends a password to the PCM through the fuel enable signal circuit
• The password disables fuel delivery to the engine.
• Disables the theft deterrent relay, which disables the starter circuit
• Disables sampling of the PASS-Key® II resistance for 3 minutes
• The 3 minute time period is called the shut-down period.
• Disconnecting the battery will not clear the timer sequence. The timer sequence will resume when battery power is restored.
• Inserting the proper key during the vehicle shut-down period will not start the engine. The engine will not start until the shut-down period has elapsed.
• After the shut-down period, the engine will start if the correct ignition key resistor pellet is used.
• The PASS-Key® II resistance may be correct and allow the engine to start. Later during the same ignition cycle, the PASS-Key® II resistance may be one of the 14 valid but incorrect resistance ranges. The theft deterrent module will perform the following actions:
• Enters the fail-enable mode
• Turns ON the SECURITY indicator
• Sends a password to the PCM through the fuel enable signal circuit when more attempts to start the engine occur
• The password allows the fuel enable circuit to deliver fuel to the engine.
• Enables the theft deterrent relay, which also enables the starter circuit.
Ignition Key With Correct Resistor Pellet Code is Used To Start Engine
The theft deterrent module performs the following actions when the correct ignition key is used in order to start the vehicle:
• Enables the theft deterrent relay. The theft deterrent relay enables the starter unit.
• Sends a password to the Powertrain Control Module (PCM) through the fuel enable signal circuit. As a result, the PCM allows fuel delivery to the engine.
Fuel pressure would be a good place to start, check that, When you turn the key to the on position, the electric pump should run for a few seconds & build pressure. Is the engine light on? If so run a scan and pull the codes. After it dies and you try to restart, is it getting fire to the plugs? Let me know what you find.
Normally after replacement of the fuel pump you need to get the fuel flowing back through the system again. To do this, turn the ignition key until you hear the fuel pump kick in for a few seconds, then turn key back to off. Repeat this several times to get the fuel flowing. If this doesn't help, you will need to ensure that the fuel pump is actually coming on. Let me know