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4.7 crew cab fuel pump

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Old 09-20-2015, 08:48 PM
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Smile 4.7 crew cab fuel pump

what is the fuel pressure suppose to be at? mine is at 50psi at idle.
the driveability issues that i have are when I start out I have no power but slowly picks up when I put the gas pedal to the floor.
changed fuel pump bosch one june 2011.

any help will be greatly appreciated as this is the only forum that really knows about our dakota's
2004 dodge dakota crew cab 4.7 4x4.
recently purchased champion iridium spark plugs too.
 
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Old 09-21-2015, 04:08 PM
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49.2 psi, +/- 5. You're there.

Can you be more specific as to the no power issues starting out? The 4.7 likes to rev.
 
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Old 09-21-2015, 06:47 PM
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Originally Posted by 00DakDan
49.2 psi, +/- 5. You're there.

Can you be more specific as to the no power issues starting out? The 4.7 likes to rev.
When I first start my truck idles fine. But when I put it in drive and push on the gas it slowly moves like not enough power to pull itself. Gas pedal too the floor cuts out then picks up speed.
 
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Old 09-21-2015, 07:28 PM
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Cuts out? Sounds like a fuel delivery problem.

The TPS could be failing or have a dead spot. They don't always throw codes.

Any vacuum leaks?
 
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Old 09-21-2015, 08:28 PM
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Default fuel delivery problem

the fuel delivery problem is what I thought. My chilton manual says 55 to 60psi
I am unsure of vacuum leaks just put in new victor reinz plenum gaskets. when I spray carb cleaner around plenum idle does not go up so I am thinking its sealed.
purchased a new tps sensor from ebay maybe that will fix it.

can you please make sure that the fuel pump psi is correct? 50psi at idle.
 

Last edited by tspeed109; 09-21-2015 at 08:32 PM.
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Old 09-21-2015, 08:57 PM
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Default Fuel pressure

Originally Posted by 00DakDan
Cuts out? Sounds like a fuel delivery problem.

The TPS could be failing or have a dead spot. They don't always throw codes.

Any vacuum leaks?

I looked at a factory repair manual at library and it says:
If equipped with JTEC powertrain control module using three electrical connectors 49.2 psi +/-2 psi
If equipped with NGC powertrain control module using for electrical connectors 58 psi +/-2 psi.
I am unsure which one I have.

Then it says fuel pressure regulator is calibrated to maintain fuel system operating pressure of approximately 49.2 + - 5 psi at the fuel injectors.
 
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Old 09-21-2015, 09:00 PM
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Look at your PCM.

If it has 3 plugs is JTEC. If it has 4 plugs it is NGC.

You should have NGC in the '04.
 



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