Question about 2009 Chevrolet Epica 2.0D

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Cann't start , is it fuel pump?

My car won't start after long off (5 hours) unless i try many times, but if it was off for almost one hour it can start quickly . is it the fuel pump and how to check it? Thanks

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  • 159 Answers

Try to check the fuel system may be its the filter and the fuel pump its located in the tank

Posted on Dec 28, 2013

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

emissionwiz
  • 75235 Answers

SOURCE: car won't start

Your fuel pump is sticking and not pumping, this is common if you run the fuel down to less than 1/4 full, the fuel pump needs the gas to cool itself, below a 1/4 tank the pump is not getting cooled and after repeatably running low on fuel it overheats and fails. Running the car near 1/2 tank extends the pump life to many years more than running tank below a 1/4 full..

Posted on Aug 06, 2008

mohammed387
  • 1952 Answers

SOURCE: 95 Chevy Caprice won't start unless I disconnect the fuel line.

Liquid gasoline by itself won't burn in the presence of a spark - unless ... Semi-related, but be on the lookout for failing fuel pumps due to states ...

http://www.autoblog.com/2006/08/03/autoblog-maintenance-101-in-tank-fuel-pu...


http://www.2carpros.com/topics/stalls.htm

Posted on Sep 14, 2008

morrison888
  • 4 Answers

SOURCE: 1989 Chevy Cavalier z24

i think you have the rong elecricale cords
or batterys or its oil

Posted on Aug 10, 2009

Molson02536
  • 3854 Answers

SOURCE: chevy cavalier wont start randomly! makes one

Ok then, from your description and the
make/model/year of the car you have there,
it appears you've reset the VATS.

The car's security immobilizer
reader at the key switch
does not recognize the coded
chip in the ignition key any longer.

You can try to put the key
in the ignition, turn to the on position &
wait at least 10 min like that.
(Do not turn off the key switch before
10 minutes as elapsed!)

Once done, the key is re-programmed and
should allow the fuel injectors to work again.
The car would start now if corrected.

In some cases, the VATS (GM'S VEHICLE ANTI THEFT SYSTEM)
will re learn the code this way, and will then
allow the restart, however if this does not work,
then you can simply tow it to any GM vehicle dealer
to have the service department re code it.

There is a permanent solution though.
Adding the PLJX Self learning Bypass module (59.95)
will bypass the PASSLOCK system in your vehicle
for good. See this at www.PASSLOCK2.com

Good luck I hope method 1 does the trick!

Here is the 30 min relearn:

Ignition keys relearn takes about 30 min to do. 30-Minute Learn Procedure 1. Turn ON the ignition, with the engine OFF. 2. Attempt to start the engine, then release the key to ON; the vehicle will not start. 3. Observe the SECURITY tell tale light. After approximately 10 minutes, the light will turn OFF. 4. Turn OFF the ignition switch, and wait 5 seconds. 5. Repeat steps 1 through 4 - two more times - for a total of 3 cycles of 10 minutes. 3x10 = 30 minutes. The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch turn from OFF to CRANK Important: Turn the Ignition Switch OFF. 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. 6. Start the engine. The vehicle has now learned the Passlock Sensor Data Code and/or password. 7. With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles. Without a scan tool you may have momentary starter interruptions while history clears itself.

Posted on Dec 23, 2009

  • 2 Answers

SOURCE: 1997 Chevy Cavalier Starts and then dies after a few seconds.

when u replaced the computer it tripped the anti-theft system because the code stored in the new computer no longer matched the ignition. when the anti theft system is triggered on a cavalier it allows the car to start

Posted on Mar 12, 2012

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Good explanation of symptoms.Thank you.




No assumptions.
Diagnose problem.
Pinch off the fuel return line.
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Toyota's have a gas tank drain plug!!!!!!!!!
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There may be a fuel pump relay that is toast,but I suspect the filter,off hand.
A plugged filter will overwork the pump and cause the engine to run rich.

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Code 55 means end of message, Code 12 means controller has been cleared, in other words you disconnected the battery, You are a OBD 1,which means once you turn the key off,you loose the code its votile.You are right about the fuel tank area, As long as you know the symptom you will know the problem,You basically are describing a fuel issue, leaving the vehicle sit for hours with a failing pump will start,when the fuel pump brushes wear out the counter electromotive forces are not there to initiate the pump unless the resistance is low,this is why waiting hours before it start it starts.
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Your fuel pump is sticking and not pumping, this is common if you run the fuel down to less than 1/4 full, the fuel pump needs the gas to cool itself, below a 1/4 tank the pump is not getting cooled and after repeatably running low on fuel it overheats and fails. Running the car near 1/2 tank extends the pump life to many years more than running tank below a 1/4 full..

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