Hi All,
I am fairly new to the Expedition world, purchasing my 2017 Platinum in March of this year. It had 124,556 miles and was a one-owner, no-accident unit.
Shortly after purchase (approximately 500 miles), I experienced a cylinder 4 misfire. I did some research and decided to replace all of the plugs and coils. I ordered them, but then the misfire went away. So I waited. Roughly 5k miles later (131,091 miles), it returned, so I replaced everything. After this exchange, the misfire was gone, but it still had a bit of a rough idle, sluggish acceleration, and would hesitate from a stop (more so in reverse).
Fast-forward ~1,500 miles, and I have a new misfire, this time in Cyl 1. I started by checking the throttle body as a means to fix the misfire and rough idle. I cleaned it, even though it was not very dirty. However, I did notice some oil (tiny amount, yellowish, and clean-looking) in the throttle body and the intake hoses that are attached. I drove for two days after performing the re-learn, and it was still a rough idle and misfiring. I moved the coil from cylinder 1 to cylinder 2, and the misfire remained with cylinder 1. Last night, I moved the spark plug from cylinder 1 to cylinder 4, leaving the coils where they were. There is still a misfire, but it is much milder and does not trigger the CEL, mostly occurring at 3rd gear or higher when I try to accelerate further.
I do have new parts coming, all Motorcraft:
- Throttle Body and gasket
- MAP Sensors (both front and rear)
- IAT Sensor
- PCV Valve and hose
Tonight, I used my friend's Innova 3160 Scanner, and it displayed the following live data while idling. Does anything stick out to anyone here? I am not even sure how to interpret some of these values.
I am seeking any guidance and/or recommendations on what I should look for or try. Some have mentioned replacing the throttle body, which I am. Others have mentioned drilling the weep hole in the intercooler, and others have mentioned installing a catch can. I am trying to get this thing running well, so the wife won't get mad that I bought an SUV with issues.
Fuel Sys 1 CL
Fuel Sys 2 N/A
Calc Load 0.604
ECT 124*F
STFT B1 -7.0%
LTFT B1 -6.3%
STFT B2 -3.9%
LTFT B2 -3.9%
MAP 17 inHg
Eng RPM 637
Veh Speed 0 mph
Spark Adv 9.0*
O2S B1 S2 0.230 V
STFT B1 S2 99.2%
O2S B2 S2 0.210 V
STFT B2 S2 99.2%
O2SLoc O2S11, O2S12, O2S21, O2S22
IAT 100*F
TPS 13.7%
OBDSup OBD and OBDII
Run Time 82 Sec
MIL Dis 0 miles
Fuel Pressure 215 psi
Command EVAP 73.7%
Fuel Level 37.6 %
Clr Dist 0
EVAP_VP -6.1 InH2O
BARO 29 inHg
LAMBDA B1S1 1.006
O2S B1 S1 0.02 mA
LAMBDA B2 S1 1.011
O2S B2 S1 0.02 mA
CAT Te 11 393*F
CAT Te 21 394*F
ECU Volts 13.725 V
LOAD Value 34.5 %
EQ Ratio 0.990
Rel TPS 3.5%
Ambient 91*F
TPS B 19.6 %
ACC Pedal D 15.3%
ACC Pedal E 7.5%
Command TAC 3.9%
Fuel_Typ Gas
ECT 1 124*F
I am fairly new to the Expedition world, purchasing my 2017 Platinum in March of this year. It had 124,556 miles and was a one-owner, no-accident unit.
Shortly after purchase (approximately 500 miles), I experienced a cylinder 4 misfire. I did some research and decided to replace all of the plugs and coils. I ordered them, but then the misfire went away. So I waited. Roughly 5k miles later (131,091 miles), it returned, so I replaced everything. After this exchange, the misfire was gone, but it still had a bit of a rough idle, sluggish acceleration, and would hesitate from a stop (more so in reverse).
Fast-forward ~1,500 miles, and I have a new misfire, this time in Cyl 1. I started by checking the throttle body as a means to fix the misfire and rough idle. I cleaned it, even though it was not very dirty. However, I did notice some oil (tiny amount, yellowish, and clean-looking) in the throttle body and the intake hoses that are attached. I drove for two days after performing the re-learn, and it was still a rough idle and misfiring. I moved the coil from cylinder 1 to cylinder 2, and the misfire remained with cylinder 1. Last night, I moved the spark plug from cylinder 1 to cylinder 4, leaving the coils where they were. There is still a misfire, but it is much milder and does not trigger the CEL, mostly occurring at 3rd gear or higher when I try to accelerate further.
I do have new parts coming, all Motorcraft:
- Throttle Body and gasket
- MAP Sensors (both front and rear)
- IAT Sensor
- PCV Valve and hose
Tonight, I used my friend's Innova 3160 Scanner, and it displayed the following live data while idling. Does anything stick out to anyone here? I am not even sure how to interpret some of these values.
I am seeking any guidance and/or recommendations on what I should look for or try. Some have mentioned replacing the throttle body, which I am. Others have mentioned drilling the weep hole in the intercooler, and others have mentioned installing a catch can. I am trying to get this thing running well, so the wife won't get mad that I bought an SUV with issues.
Fuel Sys 1 CL
Fuel Sys 2 N/A
Calc Load 0.604
ECT 124*F
STFT B1 -7.0%
LTFT B1 -6.3%
STFT B2 -3.9%
LTFT B2 -3.9%
MAP 17 inHg
Eng RPM 637
Veh Speed 0 mph
Spark Adv 9.0*
O2S B1 S2 0.230 V
STFT B1 S2 99.2%
O2S B2 S2 0.210 V
STFT B2 S2 99.2%
O2SLoc O2S11, O2S12, O2S21, O2S22
IAT 100*F
TPS 13.7%
OBDSup OBD and OBDII
Run Time 82 Sec
MIL Dis 0 miles
Fuel Pressure 215 psi
Command EVAP 73.7%
Fuel Level 37.6 %
Clr Dist 0
EVAP_VP -6.1 InH2O
BARO 29 inHg
LAMBDA B1S1 1.006
O2S B1 S1 0.02 mA
LAMBDA B2 S1 1.011
O2S B2 S1 0.02 mA
CAT Te 11 393*F
CAT Te 21 394*F
ECU Volts 13.725 V
LOAD Value 34.5 %
EQ Ratio 0.990
Rel TPS 3.5%
Ambient 91*F
TPS B 19.6 %
ACC Pedal D 15.3%
ACC Pedal E 7.5%
Command TAC 3.9%
Fuel_Typ Gas
ECT 1 124*F
