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I have a 2002 f350 and this truck will not start after it has sit overnight. In the middle of the day here in Louisiana, when it is 95 outside, it just spins. I can plug in the block heater for about an hour and it will start, but idles and runs terrible until it gets warmed-up. If the truck has been started in the last 5 or 6 hours it will retart without the heater. New batteries, new glow plug relay, new fuel filter, and oil in the HPOP housing. PLEASE HELP!!!!!!
Charlie I have the exact same problem with the exact truck. I have a F-350 2000 with 170,000 miles. I am going to work on it this week and let you know what I find. I do know that the back pressure sensor is bad on mine and will have to replace it any way, but I don't think its the cause on no starting. I did the cam, and glow plug relay, so far and no help.
I have a 2002 f350 and this truck will not start after it has sit overnight. In the middle of the day here in Louisiana, when it is 95 outside, it just spins. I can plug in the block heater for about an hour and it will start, but idles and runs terrible until it gets warmed-up. If the truck has been started in the last 5 or 6 hours it will retart without the heater. New batteries, new glow plug relay, new fuel filter, and oil in the HPOP housing. PLEASE HELP!!!!!!
Thanks,
Charlie
Replace your Glow Plug Relay...i've seen this same problem mentioned a few times over at the Diesel Stop forums and replacing the GPR seems to fix it.
Relay already replaced. For what its worth I checked the resistance of the glow plugs and found that one side were all 1.0 ohms and the other were .6 ohms at the connector on the valve cover.
I have already replaced glow plug relay and the cam position sensor. In the summer time the glow plugs wouldn't need to work at all. There is bound to be someone out that can help with this nightmare.
Did you check to see of the plugs are getting power from the relay. If they are, I'd call ford too find out what the ohms should be on the plugs, then pull all the plugs and check them. But you are on the right track with the glow plugs.
I really don't think that glow plugs or the lack thereof is an issue with the starting problem down there in Louisiana. 95 degrees ambient temperature. I can crank my PSD in the morning without waiting here in Seattle after sitting for two days and it fires right up with a very small puff of smoke and perfect idle. 55 degrees overnight.
When it does fire is there a huge cloud of grey smoke that clears out as it warms up?
I had a buddy with a 2000 PSD in Fallon Navada, his glow plugs went bad in May temps between 80-95, he had to plug his block in to start it until we replaced the glow plugs. Even in the South Pacific, Guam we have trucks that won't start without the plugs cycling. But Kwikkordead is had a good question about the exhaust. When you crank the engine and black smoke comes out the pipe without it starting this has been a sign to me that the injectors are working. But the chamber is not hot enough to fire the fuel.
Charlie here is a little info about the glow plugs. This morning it was 73 deg. and I cycled the 3 times and it started.
The Glow Plug (GP) Relay Control is used to energize the glow plugs for assisting cold engine start-up. Engine Oil Temperature, battery positive voltage (B+), and Barometric Pressure (BARO) are used by the PCM to calculate glow plug on-time and the length of the duty cycle. On-time normally varies between 1 and 120 seconds . With colder oil temperatures and lower barometric pressures, the plugs are on longer. If battery voltage is abnormally high, the duty cycle is shortened to extend plug life. (The glow plug relay will only cycle on and off repeatedly when there is a system high voltage condition greater than 16 volts ).
Well today it was 75 deg. and it started after 3 cycles of the ignition switch. As far as the fuel thing I can see if the fuel is draining back to the tank or something but why would plugging it in make any difference?