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Re: P1405,P0141 F150 2001
Ford has problems with the DPFE sensors that has to do with the EGR. its just a code that points you in the direction of the problem. you could have a bad DPFE or egr or just a simple clogged hose. there should be 2 hoses on these f150s the only way to tell is by checking hoses otherwise you need more tools to check these things. a vacuum test on the DPFE sensor to see if it reacts.
the other code is an O2 sensor code. heater problem. could be different problems or a bad O2 can cause a rich condition cause low fuel mileage and also cause the EGR system to clogg over time.
I dont knwo what else to help you with because its one of those things that just needs to be looked at in person. your best bet is check the DPFE hoses. should be near EGR and look for rubber hoses connecter to a sensor. should have 2 hoses connected to it. Google a pic of one so you knwo what they look like.
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P1361 HONDA - Top Dead Center Sensor 1 Intermittent Interruption Possible causes- Top Dead Center Sensor 1 harness open or shorted - Top Dead Center Sensor 1 circuit poor electrical connection - Faulty Top Dead Center Sensor 1P0113 HONDA - Intake Air Temperature Sensor Circuit High Voltage
Possible causes- Dirty air filter - Intake air temperature (IAT) sensor harness is open or shorted - Intake air temperature (IAT) sensor electrical circuit poor connection - Faulty intake air temperature sensor
P0442 FORD - Evaporative Emission System Leak Detected Small Leak
Possible causes- Missing or loose fuel cap - Incorrect fuel filler cap used - Fuel filler cap remains open or fails to close - Foreign matter caught in fuel filler cap - EVAP canister or fuel tank leaks - EVAP system hose leaking - Fuel tank leaking P0136 - O2 Sensor Circuit Malfunction Bank 1 Sensor 2 Possible causes- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted - Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection - Faulty Rear Heated Oxygen Sensor Bank 1 - Inappropriate fuel pressure - Faulty fuel injectors - Intake air leaks may be faulty - Exhaust gas leaks
P0141 FORD - O2 Heater Circuit Bank 1 Sensor 2
Possible causes- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection - Faulty Engine Control Module (ECM)
My thoughts on your problem. First when you rev it up in park it shouldn't go over 3000 rpm the computer wont let it. Did you have the check engine light read to see what the code is? when you say the gas mileage is poor are you comparing it to what it once was? As far as the miss goes is it a constant miss or a random miss? if you could answer these questions I should be able to help you further
Sounds like you might have an oxygen sensor problem. Your catalytic converter(s) maybe defective or dirty. That in turn can dirty up the oxygen sensor. A defective oxygen sensor will send faulty info to the computer, interpreting the fumes as cold (even when the engine warms up). That causes the computer to adjust the fuel mixture to very rich, giving you poor gas mileage and the fuel smell. Hope it helps.
there are lots of things that can affect gas mileage. if the spark plugs and wires are worn out, the air filter being dirty, dirty fuel filter, proper inflation of the tires, O2 sensors that are contaminated and performing poorly. the first thing to do would be that the engine is in good working order, as in no check engine light, no misfire, etc. a poorly running engine will put out terrible gas mileage. then you can start with the things i listed.