Question about codes and fuel pump - Ford Mustang Forum
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post #1 of 4 (permalink) Old 10-09-2017 Thread Starter
melissamae1488's Avatar
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Question about codes and fuel pump

Ok my 2006 mustang sat for almost two years i can get it to turn over n if you pour some gas up front it will start n i can rev it up but as soon as tgat gas is gone it dies ... We ordered a new knock sensor cuz mice chewed the wires but have not found any other chewed wires .. Replaces a couple vacuume lines n today replaced the fuel filter.. .. I put $15 worth of gas in it because fuel light was on when i parked it also put a can of seafoam in the tank with the gas.. The thing is my gas guage is still reading that my tank is empty n the following codes are coming up
Im a girl n don't know a whole lot about cars ive had mustangs since i started driving
Any ideas on things i can try testing before trying to replace fuel pump because a lot of what ive read on here isnt pointing to fuel pump .. Could missplaced vacuume lines be an issue.. Maybe faulty connection on the new knock sensor? (Considering i did it myself) ...when id get it to run at idle as soon as i hit the gas it would die .. The gas gauage isnt working .. Im looking for ideas on what to test .. The fuel pump fuse was blown i replaced that .. Im just trying to look at all options before going n yanking out the pump .. Please any info would be greatly appreciated i love this car

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post #2 of 4 (permalink) Old 10-09-2017
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Hopefully someone can interpret those codes for you . . .

I think things are probably gummed up from sitting for so long. The seafoam might help if you can get it in to the system; let the car run at idle for a while.

Also I would replace the fuel filter; that is relatively easy and cheap to do. It could be clogged . . . check youtube for video on how to do it.

EDIT: oops, sorry, I see you already replaced the fuel filter . . . good thing Mirage has more to offer than I did! LOL

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Last edited by JBert; 10-10-2017 at 05:49 PM.
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post #3 of 4 (permalink) Old 10-10-2017
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Here's some links to the codes you posted:

P0161 -

P0191 -

P0102 -

P0446 -

First things first. Make sure you have a full charged battery. The fact that it runs at all and doesn't throw a knock sensor code, tells me you did a good job there, don't worry about it. Here's what I would check, in order of importance:

The P0191 - Fuel Rail Pressure Sensor Range Performance. This could be because you have a bad fuel pump. Pull your back seat out. Again videos are out there, easy one man/woman job. Turn the ignition on, not start, just on. You should hear the fuel pump whir for a couple seconds. If not, check for blown fuse, or wiring problems. May just be a bad pump after sitting so long, empty, (corrosion). This would be the first thing I check. No fuel, no go. Once you're 100% sure you have fuel, then get back to me. I have lots of expensive experience with this bugger.

The P0102, is MAF sensor low voltage input. Check to see if the airway to the MAF sensor is clear. (No mice or insects nesting). Perhaps get some MAF sensor cleaner and clean the sensor. Plenty of videos on how to do it online. Pretty easy.

P0446 - Evaporative Emission control system vent control circuit malfunction. Hmmm. This could also be why it won't stay running, though unlikely. Normally when the evap system fails, the car will run, poorly, but it will run. I don't hav e a lot of experience with this type of failure, so I'm not going to try to advise here. Let me study up on it.

The P0161 - is Drivers side rear O2 sensor heater malfunction. Could be a wiring problem, or just a bad sensor. But it wouldn't prevent the car from idling. I'd check this one out later, after you get it to idle on it's own. But again, look at the wiring just to be sure. Mice love wires.

Hope this helps a little. Get back to me if I can be of any further assistance.

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post #4 of 4 (permalink) Old 10-10-2019
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