Question about 1999 Ford Super Duty F 450
I have a 1999 Ford F450 super duty diesel. It does not start when cold. If plugged in it will start. Glow plugs have been replaced. Does not run well until it warms up. Any suggestions?
Replace the glowplug relay.Its faulty.The glow plugs stay on until engine warms up.The engine temp switch then activates the relay to switch off.So it could be the temp switch also faulty.
Posted on Jul 17, 2009
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Posted on Jan 02, 2017
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