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4.0L SOHC rough idle

warhawk

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Aug 7, 2007
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Age
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Location
Grand Haven, Mi
Vehicle Year
2002
Make / Model
Ford
Engine Size
4.0L SOHC
Transmission
Automatic
I have a 2002 SportTrac 4.0L SOHC. It has a lean bank 1 and 2 codes, and idles really rough. I checked the fuel pressure which is fine and and I peformed a tune up, except the fuel filter (don't have the special tool for it). The problem still exists, I've ran injector cleaner through the system. I was woundering if anyone has had this problem and has any helpful advise befor I take it to the dealership. Thanks.
 


gw33gp

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U.S. Military - Veteran
TRS Banner 2010-2011
Ham Radio Operator
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Location
Costa Mesa, CA
Vehicle Year
2002
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
4.0 SOHC
Transmission
Manual
2WD / 4WD
4WD
Tire Size
33"
These engines have a weak elbow hose that connects the PCV tubing to the throttle body. It cracks or wears and let too much air in. It is located on the right side of the throttle body near the front. It is under the top radiator hose and you need to move the radiator hose to get to this PCV elbow hose.
 

warhawk

New Member
Joined
Aug 7, 2007
Messages
59
Reaction score
1
Points
0
Age
39
Location
Grand Haven, Mi
Vehicle Year
2002
Make / Model
Ford
Engine Size
4.0L SOHC
Transmission
Automatic
Thanks, that seems to have fixed the problem.
 

gw33gp

Well-Known Member
U.S. Military - Veteran
TRS Banner 2010-2011
Ham Radio Operator
Joined
Aug 7, 2007
Messages
1,573
Reaction score
340
Points
83
Location
Costa Mesa, CA
Vehicle Year
2002
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
4.0 SOHC
Transmission
Manual
2WD / 4WD
4WD
Tire Size
33"
I am glad you didn't have to go through all the trouble I did in resolving this same problem. Thanks for posting to let us know what the problem was.
 

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