Won't matter, unless you are wanting to save your radio settings -- then just disconnect one battery at a time -- be sure to protect the "hot" battery cable from shorting
Low FICM logic power. System detects less than 7 volts. Could be low batteries, loose connections (or excessive circuit resistance), bad relay, or even a bad FICM: FICM detects logic power low, less than 7 volts. Low batteries, loose connections/ resistance in circuit, defective relay.
|P0562||System voltage low - PCM less than 8 volts. Cause of no-start/misfire. Unreliable starts below 9 volts. Low VBAT, loose connections/resistance in circuit, Vref engine concerns.|
Got the glowshift fuel pressure gauge installed and verified fuel pressure with KOEO at only 50 psi. Batteries went dead again during the gauge install so they are back on the charger.As posted above ..................
P1378 Low FICM logic power. System detects less than 7 volts. Could be low batteries, loose connections (or excessive circuit resistance), bad relay, or even a bad FICM: FICM detects logic power low, less than 7 volts. Low batteries, loose connections/ resistance in circuit, defective relay.
P0562 System voltage low - PCM less than 8 volts. Cause of no-start/misfire. Unreliable starts below 9 volts. Low VBAT, loose connections/resistance in circuit, Vref engine concerns.
These will cause an engine to die and not re-start!
Gotta love ForScan!
I'm verifying with the previous owner if the blue spring kit had ever been installed. If it has, 50 psi seems like it would be a little on the low end. I'm charging up the batteries again (have to chase down a parasitic draw issue that I think I've got going on). After that is done, I'll fire her up, get her up to temp and go for a couple rips around the block close to the house and monitor the fuel pressure under WOT conditions. I haven't ruled out a bad fuel pump as of right now. Fortunately, if it is a fuel pump, there are several Autozones near me that carry the OEM Motorcraft pumps.50 is factory, but it is desirable to get the pressure to 70 psi to insure the injectors do not have low inlet pressure -- you need to know the pressure under a heavy load situation -- WOT is used for this or better yet up hill pulling a heavy trailer -- 50 psi would be a minimum under load, closer to 70 would be better -- you do not want to go over 70 tho, the seals can start to leak fuel into the engine oil
Here is a video for you -- Jack does a good job showing the fuel pump and regulator
I heard about the pickup foot issue before. I did a key on bowl fill check and bubble test. The bowl filled damn near immediately. Truck passed the bubble test as well. I did several longer cranks of the motor (key completely out of the ignition for this part) using the passenger side starter motor signal wire.The pickup foot in the tank fails and plastic gets wedged in the fuel suction line sometimes
you could empty the upper filter housing and key on to see how quickly the fuel runs in
easy to find if the blue spring is installed -- it's blue
the poppet seal will go bad sometimes, giving low pressure
Pop those grounds off, so the battery does not drain -- that will ruin the battery