I have an 06 F150 FX4 5.4L automatic. It is running terribly. Let me startwith what happened. I went to the Shell station near my house. I put in $25worth of regular from a pump that is shared with a diesel outlet. I drove forabout 10 km with no problems. I pulled out to go around a tractor floored itand it immediately started shaking the engine light started flashing. When Istopped it was blowing a bluish white smoke and it smelled exactly like adiesel truck. It was still running but very badly. I thought maybe I screwed upand put diesel in. Went back to the station and check and I did not put dieselin and the attendant said they have had no other complaints. Went back todayand still no other complaints. I decided maybe it was a little of bad gas so Ifilled the tank with good fuel with no improvement. When the truck is runningit shakes when driving it still seems to have a good amount of power however ittakes a while to get going. When you turn on the key the fuel pump is very loudnow and it is very difficult to start. The fuel mileage is horrible. Half atank for 125 kms. There is so much raw fuel coming out of the exhaust it willburn your eyes. It is also throwing the following code:

P0173 - system to rich bank 1

P0300 - random/multiple cylinder misfire

P0301 - cylinder 1 misfire

P0303 - cylinder 3 misfire

P0304 - cylinder 4 misfire

P2196 - 02 sensor signal biased/stuck rich bank 1 sensor 1

Anyone have an idea of what could be going on?

 

diesel pump nozzles will not fit in gas filler necks.

Try putting some gas from a different place to dilute the bad stuff

 

Bad FPDM. Your symptoms scream it. Have a peek at it - bet its corroded through.

 

Regular flow diesel pumps are the same size as gasoline. Only high flow pumps have the large-diameter nozzle.

 

The handle for diesel on the pump I used does not fit into my truck. I went back and tried just to be sure for myself that I did not mistakenly use that handle. As for the fuel pump driver module. It is brand new less than 3 moths old.

 

Have you changed the fuel filter? Could of been some dirty gas and clogged the hell out of your filter.

 

Ditto on the fuel filter as a starting point. A clogged filter could definitely make the pump scream.

Doesn't sound like an FPDM, though, as it's all on one bank, and there are no wonky fuel pressure codes.

 

Ummm...yes some still do ...just ask my wife..

 

Bank 1 rich... he's getting too much fuel

 

Yes it is defenitly getting too much fuel, I burned half a tank of fuel only going 125 kms. You can alsop smell the unburnt fuel in the exhaust. I am going to change the fuel filter clean the MAF sensor and check for an injector that might be stuck open. It seems to be these engines have an issue with that so I will check them and and listen for the clicking.