2002 Chevy Cavalier has no injector pulse .The car had a dead battery, i replaced the battery and discovered the pcm was dead, (no fuel pump, no gas gauge, etc.) Replaced the pcm, car turns over, all indications are normal and there is spark but car won't start. There is no injector pulse. What could be the cause.

 

Answer: Assuming the PCM was programmed to your car, after replacement, the theft deterrent will need to be learned. This could be the reason for no pulse. Do this procedure.....
Turn ON the ignition, with the engine OFF.
Attempt to start the engine, then release the key to ON. The vehicle will not start.
Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
Turn OFF the ignition, and wait 5 seconds.
Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. The vehicle is now ready to relearn the Passlock™ Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.
Start the engine. The vehicle has now learned the Passlock Sensor Data Code and/or password.
If this does not work, you need to check for power to the injectors. Either the gray wires, or pink wires on each inj. Power is supplied by F/P - INJ fuse in the dash fuse block. The PCM supplies the ground.

-------------------

Brakes problem with my 96 Chevy Cavalier.
When I brake there is aloud shaking vibrating noise on the passenger side of the front side of the car.

 

Answer:Most shaking like this is caused by a warped or rusted up brake rotor. It may be extremely rusted on the inboard side. You may have a caliper stuck causing the rotor to get too hot an warp. You may also have a loose suspension component.

 


1996 Chevy Cavalier 4 cylinder.
Question: My car went dead and the battery light come on and the steering wheel was hard to turn..i tried to jump start it and it didn't work!what could be the problem?i fixed the gas pump once and fixed one of the tensioners.

 

Answer: Anytime a car engine dies out, the belt that powers the alternator and power steering pump stops turning, since it is powered by the engine. (that is on a vehicle that does not have electric power steering). When the alternator stops, the battery is no longer being charged, so the light will come on. When the power steering pump stops turning, you will loose power steering assist. These things are all a common result of an engine that has stalled. If your car will not crank, then this is a battery or alternator problem. If the engine does crank, but will not start, then you need to find out what is missing- No spark to the spark plugs, low / no fuel pressure, no electric pulse to the fuel injectors to power them, etc. Since it stalled while driving, does not sound like a battery problem. If it stalled and would not crank, then have the alternator checked. If the car died out and WILL crank, you may have a bad fuel pump.

 


    • No comments yet.

    Latest Articles

    Buick Century radio code 2001

    I can get the first 3 numbers by pressing the 2&3 button, however I cant get a second set of ...

    1999 Dodge Neon

    Extremely hard to turn steering wheel p/s fluid full no visible leaks or damage to the ...

    Power steering hard to turn

    Extremely hard to turn steering wheel p/sl fluid full no visible leaks or damage to the ...

    2004 jeep liberty front ...

    I replaced my front drive shaft again and took it for test drive and it snapped again. Started ...

    2001 Tahoe Sounds Like A ...

    Just bought a 01 Tahoe seemed to run quiet at first then after a while when u first start it it ...

    Log In Or Register
    ? The Benefits

    How Things Work

    Baisic Starting System Function and Operation

    The cranking circuit consists of the battery, starter motor, ignition switch, and related wiring.

    These starter motors are not serviceable and are replaced as assemblies only.

    Most of today's starter motors are non-repairable starter motors. They have pole pieces that are arranged around the armature within the starter housing. When the solenoid windings are energized, the pull-in winding circuit is completed to ground through the starter motor.

    Read more...

    Common Engine Codes

    Evaporative Emissions Leak Code P0440 - P0455

    P0440 - P0455
    The control module tests the evaporative emission (EVAP) system for a large leak. The control module monitors the fuel tank pressure (FTP) sensor signal to determine the EVAP system vacuum level. When the conditions for running are met, the control module commands the EVAP canister purge valve OPEN and the EVAP vent valve CLOSED .

    Read more...