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Injectors not spraying


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ingersoll
Novice

May 11, 2014, 1:10 PM

Post #1 of 9 (1284 views)
Injectors not spraying Sign In

2001 Chevy Impala, 3.4. just installed a new computer, checked fuel pump. good psi. the injectors are not spaying?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 11, 2014, 1:14 PM

Post #2 of 9 (1276 views)
Re: Injectors not spraying Sign In

Which signal is missing from the injectors, the power supply of the trigger pulse?

Do you have spark?

Do you have a security light on or flashing when you try to start it?



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ingersoll
Novice

May 11, 2014, 1:15 PM

Post #3 of 9 (1273 views)
Re: Injectors not spraying Sign In

yes there is spark


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 11, 2014, 1:16 PM

Post #4 of 9 (1269 views)
Re: Injectors not spraying Sign In

OK, how about the rest of the questions?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ingersoll
Novice

May 11, 2014, 1:16 PM

Post #5 of 9 (1268 views)
Re: Injectors not spraying Sign In

There is also a security light on


ingersoll
Novice

May 11, 2014, 1:19 PM

Post #6 of 9 (1263 views)
Re: Injectors not spraying Sign In

What do i look for now


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 11, 2014, 1:26 PM

Post #7 of 9 (1253 views)
Re: Injectors not spraying Sign In

That means that you have a problem with the Passlock system. The fact that the light is not flashing is probably not good news. I'm giving you the relearn procedure but this may not work because it may have a hard failure in the system.

If this doesn't work, you will need a factory level scan tool to be able to diagnose the problem. You might get lucky.


Learn Procedures
There are two available methods to perform the programming procedure:
¤ A 10 minutes procedure which requires a Tech 2 and a techline terminal. ¤ A 30 minutes procedure which does not require the use of any tools.
10 Minute Learn Procedure

Tools Required
¤ Tech 2 ¤ Techline terminal with current SPS (Service Programming System) software
  1. Connect the Tech 2 to the vehicle.
  2. Select "Request Information" under "Service Programming".
  3. Disconnect the Tech 2 from the vehicle and connect it to a techline terminal.
  4. On the techline terminal, select "Theft Module Re-Learn" under "Service Programming".
  5. Disconnect the Tech 2 from the techline terminal and connect it to the vehicle.
  6. Turn ON the ignition, with the engine OFF.
  7. Select "VTD Re-Learn" under "Service Programming".
  8. Attempt to start the engine, then release the key to ON (vehicle will not start).
  9. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF (the vehicle is now ready to relearn the Passlock Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK).
  10. Turn OFF the ignition, and wait 5 seconds.
  11. Start the engine (the vehicle has now learned the password).
  12. With the Tech 2 (scan tool), clear any DTCs.

30 Minute Learn Procedure

Tools Required: None

  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to start the engine, then release the key to ON (vehicle will not start).
  3. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
  4. Turn OFF the ignition, and wait 5 seconds.
  5. 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).

Important: The vehicle learns the Passlock� Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

  1. Start the engine (the vehicle has now learned the Passlock� Sensor Data Code and/or password).
  2. With a scan tool, clear any DTCs if needed (history DTCs will self clear after 100 ignition cycles).




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ingersoll
Novice

May 11, 2014, 1:28 PM

Post #8 of 9 (1251 views)
Re: Injectors not spraying Sign In

I will give it a try. Thanks.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

May 11, 2014, 2:36 PM

Post #9 of 9 (1242 views)
Re: Injectors not spraying Sign In

Just curious, but did you get the PCM out of another vehicle? Was the replacement PCM programmed to your vehicle? If you didn't, the VINs won't match between control modules. You might have air bag light and radio problems also.





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