crown vic intermittent shut down

[SnakeBit!]

did it with the new pedal. Quit twice.
installed the new fuel rail pressure sensor, so far, nothing...but unfortunately, that means nothing. Probably going to change out the fuel pump as that has been pointed out as the possible culprit as well.

should would be nice if it was going to quit on me, it did it more frequently. data logging something that sometimes shows up months later is not a great way to try and diagnose it.

 

[96blak54]

How about a 12volt line monitor? Get one and tap it onto 12v components that might have a wire break issue. The monitor should record how many times power was interrupted.

 

[SnakeBit!]

wasn't aware of something like that. how does it know the history?

 

[SnakeBit!]

and for grins, upon a suggestion from a well trained mechanic, went ahead and replaced the fuel pump assembly and it died on me the next day. this is really getting old now. I am wondering about the ignition switch.

 

[SnakeBit!]

finally got AI involved. checking out some other possibilities.

 

[07GtS197]

Did you ever get your instrument cluster rebuilt? I think that’s a common cause for strange issues in these cars since it acts as a pass through. My 09 will sometimes go into limp mode where the pedal doesn’t do anything and it’s in forced idle until I cycle the ignition. Also, not at the same time strangely enough, sometimes the entire cluster goes dead. If you check the codes with Forscan, it’s usually the instrument cluster that the codes originate from, instead of the ecu. I like that Forscan break them down into which module is detecting a fault since more than one module uses readings from sensors, so you know where the issue originates from. Point being it might not be a sensor but somewhere in the can bus system.