I'm unsure of which direction i need to look now. I'm leaning towards a gasoline rag in the fuel filler tube.

I have a 2003 Ford Ranger Edge 3 0 flex fuel. since purchased i have replaced: plugs, wires, coil, coolant, thermostat, tps, both upstream O2 sensors.

The issue: The truck keeps throwing p1130 and 1131 codes. It has a bad vibration when accelerating and on idle at time. The truck will drive perfect and then lose power on hills or have very slow acceleration. When i put a scanner on it the O2 voltage stays around zero and you can see its backing fuel out. These O2 sensors are upstream so i would lean away from the cats being clogged but maybe im wrong. I know the engine is dumping a lot of fuel into the engine because i can smell raw fuel. I looked at my maf and can't tell if the reading is where it should be, but i can unplug it with the truck running and there isn't much difference on the trucks idle. On another note, the engine coolant temp stays around 180-188.

Please any help is appreciated.

 

Are the fuel trims negative on bank one? If so lit sounds like a leaking fuel injector to me. The 02 probably isn't switching because the computer can't correct for how much extra fuel its getting. I would try looking up fuel injector drop test on you tube.

 

If you have leaking injectors, a quick way to tell is to press the accelerator to the floor while cranking the engine. If it tries to fire up at all, you probably have one or more injectors leaking.

 

Welcome to the forum

Yes, burning up a vehicle and collecting on insurance is always an option, just don't get caught doing it, lol


P1130 Lack of Upstream Heated Oxygen Sensor Switch - Adaptive Fuel Limit - Bank No. 1
P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1

Bank 1 is the passenger side of V6 engine

I would pull the 3 spark plugs on passenger side and have a look at the tips to see what they tell you
Misfires on passenger side will set lean codes, and cause a vibration
O2 sensors can only "see" Oxygen, and when a cylinder misfires NO OXYGEN is burned up, it just gets dumped into exhaust manifold and O2 sees that as LEAN burn
O2s do generate their own voltage
0.1 volt indicates Lean, high oxygen
0.9volt indicates Rich, low oxygen

You can only read O2 sensor voltage after engine is warmed up, O2s need to be above 650degF before they start to work, so just a heads up when using a OBD2 reader to check O2s

So I would focus on passenger side cylinders, you have one that's not working(firing), maybe two


Yes, unless you have Dual exhaust I wouldn't think this was clogged exhaust, or it would set codes for BOTH banks of the engine
But some Rangers do have a Cat for each side of engine before they combine at the "Y" pipe, so long shot but not a no shot

 

So i tested the the injectors by the wide open tbrottle test and the truck did not attempt to start. Im trying to figure our how to post a video. I have it idling and revved up to 1500 rpms after the truck warmed up on video. I may end up giving up and just type it in. I have not been able to pull the plugs since it has been dark when i have gotten off of work the laat few days.

 

 

 

pulled passenger side plugs and this is what i have.... the truck that keeps giving.