FORD's SELF-DESTRUCTING 4.0L V-6
KnobbyTires
04-20-2011, 12:22 PM
MY 99' Ford Ranger is having trouble at 99K. (So did my last one, a 2000, at 94K, whose heads warped and cracked without notice, or overheating, only a once a month slight need to add water)
ENG LIGHT is ON... Trouble codes are:
P0171 - Fuel trim bank, one position (rich or lean bank, O-sensor, injector, misfire, fuel pressure, MAF
P0174 - Fuel trim bank, two position (MAF, fuel pressure, O-sensor, misfire, injector, or engine mechanical
PO304 - Misfire cyl 4, (plug, wires, vacuum, injector, hi/lo fuel pressure)
P1507 - Idle-Air-underspeed error (possible vac leak, IAC valve, Inlet plug, open or shorted electrical circuit
To get through emmisions, I added 4 bottles of Heet, and one Octane Booster and it ran fine. The check engine light even went away on it's own. :screwy:
Where would you start? My only symptom really is rough at cold starts, takes a long time to warm up, runs smooth over 2,000 RPM when warm, and almost normal below.
Your two-cents worth please: :2cents:
ENG LIGHT is ON... Trouble codes are:
P0171 - Fuel trim bank, one position (rich or lean bank, O-sensor, injector, misfire, fuel pressure, MAF
P0174 - Fuel trim bank, two position (MAF, fuel pressure, O-sensor, misfire, injector, or engine mechanical
PO304 - Misfire cyl 4, (plug, wires, vacuum, injector, hi/lo fuel pressure)
P1507 - Idle-Air-underspeed error (possible vac leak, IAC valve, Inlet plug, open or shorted electrical circuit
To get through emmisions, I added 4 bottles of Heet, and one Octane Booster and it ran fine. The check engine light even went away on it's own. :screwy:
Where would you start? My only symptom really is rough at cold starts, takes a long time to warm up, runs smooth over 2,000 RPM when warm, and almost normal below.
Your two-cents worth please: :2cents:
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