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I have a 2003 E-450 Ford walk- in delivery van with a 5.4…

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I have a 2003 E-450...
I have a 2003 E-450 Ford walk- in delivery van with a 5.4 V8.
Every time I put in gear the truck almost will stall and at idle will surge. Skips during acceleration. Changed spark plugs/coils, o2 sensors, MASS airflow sensor, ideal sensor?
Submitted: 11 months ago.Category: Ford
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Answered in 11 minutes by:
9/23/2017
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 11 months ago
HDGENE
HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
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Hello, and thank you for using Just Answer! My name is***** me a few moments to review your question and Ill do my best to assist you.

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Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 11 months ago

Hello, is the check engine light on? Any warning lights? Any diagnostic trouble codes stored that lead you to replace those parts? his is a 5.4 2 valve or a 5.4 triton 4 valve engine?

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Customer reply replied 11 months ago
No check engine codes, mass flow sensor did cause the o2 sensor problems, not sure on 2 or 4 valve engine make mechanic thinks it could be the plug connectors loose going to the coil packs some were getting worn? Did a tune up back in June and changed the spark plugs, fuel filter and coils, also a vacuum line was leaking that was fixed. here is the vin# *****
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 11 months ago

O its a 2 valve modular engine, not the 3 valve triton engine. How many miles are on this engine? Is it the original fuel pump?, Fuel pressure is good? It passes Key on engine off and key on engine running tests? No misfires stored in mode 6 data when the mechanic checked using a scan tool?

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