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2003 odyssey. Barely starts runs rough and dies. No engine

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2003 odyssey. Barely starts...
2003 odyssey. Barely starts runs rough and dies.
No engine codes. New fuel pump and relay. Have spark all plugs,checked DTC manually,OK. Compression test 220psi all cylinders. Ran injector cleaner through all injectors.
No change.
Submitted: 1 year ago.Category: Honda
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Answered in 18 minutes by:
7/18/2016
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago
MASTER TECH
MASTER TECH, Honda Technician
Category: Honda
Satisfied Customers: 5,759
Experience: 30 years of Honda training and a master Honda tech
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Hello welcome to just answer I am master tech and will be able to assist you today.

I would like to do a quick test.

if you can unbolt the EGR valve and place a business card under it blocking both ports and then re tighten it then see if it will start of remain the same.

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Customer reply replied 1 year ago
I will try this tonight. I know the van seems to be running rich...too much gas.
Customer reply replied 1 year ago
I tried blocking the egr but no difference.
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

ok

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Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

how are the plugs ?

brand /gap ?

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Customer reply replied 1 year ago
Brand new gapped correctly. NGK
Gas pressure 45psi when first starts drops to 25psi after running.
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

when you disconnect the vacuum line what does it go to ?

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Customer reply replied 1 year ago
Drops to 20 psi.
Vacuum is 17 inHG
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

oh really ?

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Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

here are the pressure specs

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Customer reply replied 1 year ago
Does run a little better with egr blocked egr
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

how much better ?

cause the fact now codes and we have known issues with the egr valves sticking and causing the valve to stick open and cause these conditions.

drive it and see cleans out

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Customer reply replied 1 year ago
I can't drive it ,as soon as i give it gas it dies
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

ok from your readings its got no fuel pressure.

I would be looking at the fuel pump as a failing issue as of now

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Customer reply replied 1 year ago
It seems like it is surging when idleing
Customer reply replied 1 year ago
Rpm goes from 900 to 1500
Customer reply replied 1 year ago
Code 505 came up.
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

ok lets dry to isolate one problem first.

lets work on the fuel problem first.

I would make sure their is no blockage in the fuel lines and then if they are all clear

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Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

that is for the idle air control valve.

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Customer reply replied 1 year ago
Gas is staying at about 40psi rpm 1500
When i give it gas drops to 15-20
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

ok then either the filter is plugged or the pump is going bad

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Customer reply replied 1 year ago
Drained gas tank. This is the second fuel pump. Only filter i could find was attached to the bottom of the fuelpump
Customer reply replied 1 year ago
Is there another filter i don't know about?
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

no not on this

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Customer reply replied 1 year ago
Why is the car surging. What tells the engine to accelerate up and down
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

because the idle air control valve is hunting.

check the coolant level

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Customer reply replied 1 year ago
Coolant level full
Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

ok then the system is getting more air then it was programmed. possible dirty throttle body holding the throttle plate open more then required. or a failing IACV valve.

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Mechanic for Honda: MASTER TECH, Honda Technician replied 1 year ago

im signing off for the night I have to get up early for work.

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