Truck not cranking on cold mornings with heater box plug up.

75

Asked by Nov 15, 2014 at 05:36 AM about the 2004 Ford F-250 Super Duty XLT 4WD Extended Cab LB

Question type: Maintenance & Repair

I have been plugging my truck up for a few days now. It was real slow in cranking. I have
changed the fuel filter and that has not helped. Its only been in the 40's and 50's until last
nite and it was 22. When it does crank it runs rough until it warms up. Then it runs great
and cranks with ease. But once it cools down it slow to crank. Any suggestions or
recomendations is gladly welcome.

2 Answers

34,605

Synthetic oil. Check your block heater. I assume that you have the 6.0 diesel.

75

yes sir i do. when i went out this morning I turn the key to on and let it cycle and the wait light went out real quick.

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