2001 running rich, no power, poor MPG’s


Kesh2011

New member
Joined
Jan 31, 2019
Messages
14
Reaction score
0
Points
0
Location
Colorado
Vehicle Year
2001
Make / Model
Ford
Transmission
Automatic
Another thing I noticed is that it will idle smoothly when it is in park but the idle is rough when it is in gear. I don’t know if that matters?
 


Rock Auto 5% Discount Code: CFB3B5F7F32B37 Expires: March 30, 2020

8thTon

Well-known member
Joined
Jan 13, 2019
Messages
740
Reaction score
370
Points
63
Location
Pennsylvania
Vehicle Year
2004
Make / Model
Ford
Engine Size
3.0
Transmission
Automatic
2WD / 4WD
2WD
My credo
My world is filled with stuff that needs to be fixed
AGSF32FM are fine plugs for this engine, but they still don't last forever. The wasted spark ignition will still burn the center electrodes on 3 of them faster than the others and I've never had luck re-gapping them in other Ford engines with this ignition. Why not replace them? It's not expensive or difficult.
 

Kesh2011

New member
Joined
Jan 31, 2019
Messages
14
Reaction score
0
Points
0
Location
Colorado
Vehicle Year
2001
Make / Model
Ford
Transmission
Automatic
My plan is to replace them after I Seafoam the engine again.
 
Last edited:

pjtoledo

Well-known member
Supporting Member
U.S. Military - Veteran
Joined
Oct 5, 2007
Messages
2,024
Reaction score
197
Points
63
Location
Toledo Ohio
Vehicle Year
20002005199
Make / Model
Fords
Engine Size
3.0 2.3
My credo
get outta my way, I'm falling!
anybody notice the 85 octane? how are these engines supposed to run on 85? I wonder if the PCM is retarding the timing just a bit.
 

Ranger850

Well-known member
Supporting Member
TRS 20th Anniversary
Joined
Jan 24, 2018
Messages
3,320
Reaction score
701
Points
113
Location
Tallahassee Florida
Vehicle Year
2001
Make / Model
Ford
Engine Size
Born with a 3.0, looking for a donor V8
Transmission
Manual
2WD / 4WD
2WD
Total Lift
Stock 2"
Tire Size
Stock
My credo
Doing things wrong, until I get it right.
anybody notice the 85 octane? how are these engines supposed to run on 85? I wonder if the PCM is retarding the timing just a bit.
I thought about it, but since nobody else mentioned it, I was gonna stay out of the way.the lowest I can get is 87:icon_confused:. 85 has to be mostly kerosene :icon_rofl: that will make it run rough for sure
 

Kesh2011

New member
Joined
Jan 31, 2019
Messages
14
Reaction score
0
Points
0
Location
Colorado
Vehicle Year
2001
Make / Model
Ford
Transmission
Automatic
I filled it up yesterday. I’ll run it out and put some better gas in it next time
 

pjtoledo

Well-known member
Supporting Member
U.S. Military - Veteran
Joined
Oct 5, 2007
Messages
2,024
Reaction score
197
Points
63
Location
Toledo Ohio
Vehicle Year
20002005199
Make / Model
Fords
Engine Size
3.0 2.3
My credo
get outta my way, I'm falling!
we need a clarification,,,85 octane gas or E85 alcohol blend.
 

Kesh2011

New member
Joined
Jan 31, 2019
Messages
14
Reaction score
0
Points
0
Location
Colorado
Vehicle Year
2001
Make / Model
Ford
Transmission
Automatic
After reading your post I wasn’t too sure so I went back to the local gas station where I usually fill up and they said it was 85 octane and not E 85.
 

Kesh2011

New member
Joined
Jan 31, 2019
Messages
14
Reaction score
0
Points
0
Location
Colorado
Vehicle Year
2001
Make / Model
Ford
Transmission
Automatic
The check engine light came on again so I went to O’Reillys and they put their scanner on it. They got code P0171,P0113., And P0102. He said they are 02 sensor, Throttle position sensor, and mass airflow sensor.
 

alwaysFlOoReD

Forum Staff Member
Forum Moderator
TRS Banner 2012-2015
TRS 20th Anniversary
Joined
Apr 13, 2009
Messages
9,865
Reaction score
926
Points
113
Location
Red Deer, Canada
Vehicle Year
'91, '94, '80
Make / Model
Ford, GMC
Engine Size
4.0,4.0,350
Transmission
Manual
P0102 Mass or Volume Air Flow Circuit Low Input
P0113 Intake Air Temperature Circuit High Input
P0171 System too Lean (Bank 1)

p171 - this would lead to rich running. I don't know which side it is but o2 sensors have a life span of 60,000 to 100,000 miles. If they haven't been changed before then at the very least change the front two sensors. The rear two sensors are used to make sure the cat is working and don't have an effect on the engine.

The other 2 codes I can't help.
 

8thTon

Well-known member
Joined
Jan 13, 2019
Messages
740
Reaction score
370
Points
63
Location
Pennsylvania
Vehicle Year
2004
Make / Model
Ford
Engine Size
3.0
Transmission
Automatic
2WD / 4WD
2WD
My credo
My world is filled with stuff that needs to be fixed
Mass Airflow too low, O2 too lean - could be an air leak downstream of the MAF sensor but in front of the throttle plate, letting in air the MAF does not see. Not sure how the air temp sensor could be involved - it's located near the MAF but it's a separate connector.
 

Kesh2011

New member
Joined
Jan 31, 2019
Messages
14
Reaction score
0
Points
0
Location
Colorado
Vehicle Year
2001
Make / Model
Ford
Transmission
Automatic
So I ordered some parts. I’m going to change the MAF, the TPS, and O2 sensors. We’ll see how she runs after that
 
Last edited:

LeftHander

New member
Joined
Sep 20, 2013
Messages
10
Reaction score
0
Points
1
Location
Milpitas, CA
Vehicle Year
1988
Make / Model
Ford
Engine Size
2.9
Transmission
Automatic
Is this a flex fuel truck? If so, and if you put Sea Foam in the fuel system, that may be your problem. The flex fuel sensor sees Sea Foam as alcohol, and dumps a very large amount of gas into the engine since alcohol runs about twice the volume of straight gas to run right. ANY Sea Foam (and potentially any other fuel cleaner/additive) will cause this problem to some extent.
 

Fordblue213

Member
TRS 20th Anniversary
Joined
Oct 22, 2016
Messages
57
Reaction score
5
Points
8
Location
New Orleans, LA
Vehicle Year
2000
Make / Model
Ford
Engine Size
3.0
Transmission
Automatic
Does it run more rough idling after its warm or after you run it hard?
 


Top