1988 Ford F 150 "f150 code reads running lean" Questions

...f150 with a 4.6 eng. trouble codes po174 po125 po171 p1131 po136 po156 p1151 runs rough at idle runs smooth under load while driving starts good and has not stalled in drive position All of the codes ...

...F150, 4x4, 5.4 vin code 5. More than likely you have a vaccume leak.Check arround the intake looking for any broken vac.hoses(especally the PCV hose) all the way up to where it connects to the ...

code #45 on 1988 Ford F150 302 seems to be running lean Most of the time,the fuel pressure is too low,replace the fuel filter,and if this does not help,have the fuel pressure checked,the fuel pump may

...f150 codes 2197,2195. changed all 4 o2 sensers,mass flow senser fuel pressure 39-43. still stalls does it have an idle air control valve?? if so clean or change it Codes indicate; Both sides of the ...

F150 5.0 CODE 171 RUNS IN OPEN LOOP LEAN IN CLOSED LOOP RUNS OK AT IDLE MOST OF TIME,UNTIL YOU REV THE ENGINE,O2 READINGS GO TO .02 WILL NOT REV,IF YOU DISCONNECT MAF RUNS AND REVS FINE..GOOD FUEL PSI

...f150 fx4 with the 5.4 my check engine light is on code read o2 sensor repaced same one twice andstill say that the o2 sensor is bad why O2 Sensor codes rarely mean that the O2 Sensors are defective. ...

...f150 5.7 4x4. Engine started missing, noticed check engine light came on. Could tell when engine was going to act up engine light would start flashing. Went to advance to have code ran, i was told it ...

f150 runs rough replaced MAF, VCT solenoids, plugs and COP, one code says too lean bank 1, others have finally been cleared included too rich bank 2, misfire 2 and 3, misfire first 1000 revs. Shudders

...f150 2003 po171 always lean bank 1. replaced bank 1 o2 sensor smoked intake. replaced egr valve. still code po171 short term trim 0123 but long term trim is up bank 1 30 anb bank 2 is 27. idle is a ...

...f150 4.2 liter. the check engine light and the fuel cap light is on. it run really rough and feels like its misfireing. i changed the fuel cap, but it didnt work. i put it on a code reader and the ...