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Category: Ford
Satisfied Customers: 26441
Experience:  ASE CERTIFIED TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
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Ford e350,club wagon(bus) my 1991 ford E350 van with 5.8L

Resolved Question:

my 1991 ford E350 van with 5.8L engine will not pass emissions,is running rich,changed out o2 sensor,temp. sensor,computer.checked for back pressure on catalytic conver it's ok.can you help mr
Submitted: 5 years ago.
Category: Ford
Expert:  AMEDEE replied 5 years ago.

How do you know that the engine is running rich?

Are there any codes in the computer?
Customer: replied 5 years ago.
first off The Smell,code # XXXXX
Expert:  AMEDEE replied 5 years ago.

Do you know what the engine vacuum is at idle?

Does the fuel pressure leak down with the key off?
Customer: replied 5 years ago.
my mechanic just gave it back after two weeks of having it and i can't get an answer on his phone,at lunch i guess. what can i check?
Expert:  AMEDEE replied 5 years ago.
I would check the fuel pressure to be sure it is not to high or too low, check to see if it leaks down with the key off, check the fuel injectors and the fuel pressure regulator.
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