This is a customer's truck; VIN #1FDXF46F52EA48868 and it has a aerial boom mounted on it. The two complaints were 1) the truck would shut off intermittently when the windshield wipers were turned on and 2) the engine just started hesitating and sputtering when started cold but smoothed out after a minute or so; the truck was being used daily until I worked on it Thursday the 11th. I checked it and found engine shut-down only occurred when the washers were engaged and then not every single time but most of the time. I checked the fuses and relays along with the multifunction switch & harnesses and believe it is in the switch but don't have the adequate wiring schematic to confirm that; I also experienced no problem with the engine hesitating/sputtering when I first cranked it cold, even going so far as to give it a 15 minute road test where it performed fine. The owner then asked me to service the engine so I performed that before going back to the washer/performance issues. I changed the engine oil and oil/fuel/air filters along with filling the fuel bowl with fuel, filled the engine with 5/40W synthetic Rotella then started the engine to make sure there were no leaks. I ran it a couple minutes then shut off to check the oil level; realizing I didn't check the transmission fluid I started the engine again only to experience the sputtering the driver had described earlier. I shut the engine off then attempted to restart, this time it cranked over and acted like it would catch and start but never did. I cycled the ignition key a few times per the owners manual for bleeding purposes then attempted to start again but it did the same thing. I checked the fuel filter bowl and found very little fuel in it so I filled it again, installed the filter and tried starting but the same result. I checked the fuel bowl and found it almost empty again so I turned the ignition key to start with the cap off to check for fuel delivery but no fuel pressure at all. I checked all fuses and relays for the fuel pump and injector driver module, all good. I went underneath and checked for power at the lift pump and had no power with the ignition key on but didn't have a schematic for the wiring harness to check for the break in power. I'd like to get schematics to check the w/s washer / multifunction switch circuits as well as the lift pump circuit and would also appreciate any further information you could give me regarding the above details, thanks.
have the same problem?
Friday, September 12th, 2014 AT 8:02 AM