View Full Version : 2001 Ford F350 diesel won't start

01-21-2008, 05:50 PM
unless plugged in. It even needs plugged in when it is 80 degrees out.

Please let me know what other details you need to help solve this. -SL

01-21-2008, 06:25 PM
glow plugs and/or glow plug relay. but it should start unaided at 80*F, mine did to about 50*F with all 8 glowplugs dead. When you try to start without the block heater, do you get white smoke out the exhaust?

01-21-2008, 07:56 PM
Sounds like a high mileage truck if it needs to be plug at 80 degrees
I would replace the relays and se if your glow plugs are not shot
Use an amp clamp and measure glow plug amperage. Amp draw should be around 190and taper off to around 125 amps after 15seconds I think that more o less it:drinkup:

01-21-2008, 08:32 PM
Check the glow plugs and controller out. Start with fuses and circuit breakers first.

Had a 91 with IDI 7.3 that would need attention seemed like every June. Funny thing is you could pull start it, but never get it running with the starter.

01-21-2008, 09:31 PM
Try jumping the glow plug relay with a screwdriver and cranking the engine over. It sounds like none of your glow plugs are working.