Question about 2005 Ford F 350 Super Duty
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Posted on Jan 02, 2017
It sounds like your preheat system is not working properly on the cold startup. Haynes has a Diesel Engine Repair Manual, part #10330 that will help you correctly diagnose and repair.
Battery volts at 13 is good but a fully charged battery should be close to 14.2. It would be a good idea to get the alternator output checked and a load test done on the batteries.
Hope this helps.
Posted on Jul 12, 2010
What tells me, is that the thermostat is staying open after
your done using the truck
When you start it up cold, it takes longer to warm up the area
near the coolant temp sensor,which is part of the system
to put the PCM (computer) into closed loop
Closed loop is when you leave a computer fuel stratagy and
the O2 Sensors take over fuel control
Hard to start----
Need spark plugs that have not been in the motor over 60,000 miles
Spray the throttle plate with CRC Throttle Cleaner
Spray the MAF Sensor with CRC MAF Cleaner
Need all ducting in place,no vacuum leaks and a clean air filter
Make sure your O2 Sensors are tight
A fuel filter not over 3 years old
Hope the coolant temp sensors works correctly
Anything more gets too technical
Posted on Dec 02, 2010
It sounds like your glow plug system is not working properly. There are a number of pieces to it. I would be looking at the glow plugs first. Remove the lead from the glow plug and measure Ohms by putting the positive lead on the terminal and negative to the case. Any plug that measures more than 2 ohms needs to be replaced. If they are okay then measure volts from the wire going to the glow plugs. BE CAREFUL not to let that wire touch ground, it will short out a lot of expensive stuff. With the key on measure voltage between the glow plug wire and the plug. There should be a minimum of 11 volts. If you don't get tis reading then you need to do more diagnosing. For that Haynes Diesel Engine Repair Manual, part #10330 will help you get it figured out. It has a step by step section for diagnosing glow plugs for your engine. It would be well worth the $20. In the meantime keep it plugged in to stop undue stress on your engine. Hope this helps.
Posted on Feb 01, 2011
Testimonial: "thank you i will pick up that book and check into the glow plugs"
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