Help diagnosing a stalling 4.9?
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New User
Joined: Mar 2014
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From: Florence, SC
Help diagnosing a stalling 4.9?
Background, had a battery die on me at work for some reason. Replaced battery and truck ran fine for about a day. Then it randomly started stalling out on me. Ive checked and the new battery is perfectly fine. I then went ahead and replaced plugs and the fuel filter. Still having same issue. I tried to pull EEC codes and all I get is a solid check engine light.
So now I am stumped on how to diagnose further. When I turn the key to on I hear the fuel pumps come on. I can two foot drive it now but it hesitates like its not getting enough fuel.
Is it a failed EEC? PCM? EGR valve? Fuel Pump?
Any help would be very much appreciated you guys always save my butt before.
So now I am stumped on how to diagnose further. When I turn the key to on I hear the fuel pumps come on. I can two foot drive it now but it hesitates like its not getting enough fuel.
Is it a failed EEC? PCM? EGR valve? Fuel Pump?
Any help would be very much appreciated you guys always save my butt before.
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New User
Joined: Mar 2014
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From: Florence, SC
Not the usually flashing like its showing codes.
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New User
Joined: Mar 2014
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From: Florence, SC
Thanks for your help! I pulled it out and it does have two of the three capacitors leaking.
When I order a new PCM (usually use Advance Auto parts for stuff like this) how do I order it? Doesnt it need to be specific to my transmission and what not?
When I order a new PCM (usually use Advance Auto parts for stuff like this) how do I order it? Doesnt it need to be specific to my transmission and what not?
Fleet Owner
Joined: Oct 2005
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From: Kentucky
You can take it to an electronics shop to see if they can replace the capacitors for you. It is a medium skill level repair if you want to try doing it yourself.
If you go down the path to order a rebuilt one, there are no new ones, they go by the part number listed on the PCM. It starts off with something like E9ZA-12A650-AA. Some suppliers will simply use E9ZA-AA. The prefix and suffix will change but the middle 12A650 will always remain the same.
This place can repair the one you have: Ecu Repair Now, automotive circuit board testing and repair
If you go down the path to order a rebuilt one, there are no new ones, they go by the part number listed on the PCM. It starts off with something like E9ZA-12A650-AA. Some suppliers will simply use E9ZA-AA. The prefix and suffix will change but the middle 12A650 will always remain the same.
This place can repair the one you have: Ecu Repair Now, automotive circuit board testing and repair
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From: Florence, SC
I have soldered on PCBs before. I might pick up the necessary capacitors and try it myself. Thank you so very much for all your help! Hopefully this resolves my issue.
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New User
Joined: Mar 2014
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From: Florence, SC
Worked like a charm! I was going to have my old PCM refurbed but I need my truck to get back and forth to work. So paid the larger amount for one from Oreilys.
Thank you for all your help rla2005!
Thank you for all your help rla2005!
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