Cummins 4BT & Diesel Conversions Forums banner

1 - 5 of 5 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter #1
What is making my 2005 5.9 hard to start when the night time temps are below 50. The engine seems to turn over slower at these temps. I have replaced the batteries. 50 degrees is not that cold.
 

·
Registered
Joined
·
1,569 Posts
Are your toaster ovens working at that temp? How about starter, cables, should spin OK at that temp.

Ed in CO.
 

·
Registered
Joined
·
3 Posts
Discussion Starter #3
Heater "toaster oven" works. I havent replaced any cables. I would imagine that the starter, if bad, would be slow at any temp. I plug in the block heater when below 50 and everything works as it should.
 

·
Registered
Joined
·
11,225 Posts
Might inspect you starter cables for signs of corrosion. Same for the ground wires. A bad ground can have a big effect on the starter circuit. A weak starter can also be suspect. Oil is a bit thinner at higher temps so it doesn't pull as hard. A few years back I replaced the positive cable on my old Ford 7.3 and the starter as well. Was expensive but it was like night and day difference.
 
1 - 5 of 5 Posts
Top