My truck died on the way to work Fri a.m. Had it towed to a friends shop, they checked it out and found the fuse that powers the fuel heater and the PCM (that's what they told me) blew. They checked it out and replaced the fuse and fuel filter and said all is good. Went this a.m. to pick up (28 degrees this a.m., and started up fine but it was acting like it was missing. I figured maybe some air in the fuel lines so reved up a few times and was fine. Driving home it started missing slightly then the ck engine light came on, I looked at the amp gauge and it was low, then amp gauge went back to normal and ck engine light went out. Drove it back to the shop and they plugged a code scanner in and when they tried to sync the code scanner the truck it died. It did this same thing w/ another code scanner. I then plugged my Edge Evolution in and it read 3 codes 1. IPR 2. intake temp 3. Map sensor getting too much voltage. I do have a rebuilt computer in there from a few years ago because mine went out. Could the Edge have damaged the computer? ANY IDEAS? It has been running fine other than that.

 

Just talked to my buddies shop and he put it in tow mode then out for a nice drive. Ran fine, put it back to stock took it for a longer drive and all fine. Might be a problem when it's cold, but I don't know. I told them to unplug the fuel heater, and hope that was the problem. They are gonna keep and try it again Mon. a.m.

 

They used a generic scanner; it'll do exactly that, kill the engine when you hit "scan". They/you need a scanner capable of communicating with our non-standard trucks.

That's a voltmeter, by the way, not an ammeter. And yeah, it's possible that the fuel heater is at the heart of the issue. Possible that, rather than outright blowing the fuse, it's pulling so much current that the voltage is dropping dramatically, and the PCM may have set a code for that.

 

or the alternator is starting to fritz out and when it goes down the idm will start to shut down? thinking you fellas are prob on it with the heater circuit.

 

The fuse is from the heater Or the IPR wires ...Check engine will leave a code. I don't think low batt voltage will set a CEL . ? Low Batts will try to stall the motor , maybe set a code ..THe fuel heater will not be intermittent

 

After doing some resaerch on here it is common for the fuel heater element to short out. Many people say you don't really need it so I told my mechanic to unplug it, so far so good. They did plug my Egde Evolution in and put it in tow mode and took for a drive. Then put it back to stock and took for a longer drive. I am not convinced completely it was just the fuel heater. Maybe the Edge had something to do with the PCM. Time will tell...if I had the $$$ i would find other ways to make more power besides a programmer, but until then it has to be w/ Edge.